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Vic... looks like they damn near missed the boss area
on the upper head bolt holes on the first and third holes
looks like a nice block.... also what are the holes
above each lifter bores... maybe oil holes(oil letter
inners )

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Vic... looks like they damn near missed the boss area
on the upper head bolt holes on the first and third holes
looks like a nice block.... also what are the holes
above each lifter bores... maybe oil holes(oil letter
inners )

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Vic... looks like they damn near missed the boss area
on the upper head bolt holes on the first and third holes
looks like a nice block.... also what are the holes
above each lifter bores... maybe oil holes(oil letter
inners )

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Mike, It's my belief, the XR blocks were initially cast soley for P-7 heads. (XR-2)
On the XR-2 version, the bolt holes are located in the center of the bosses.
Notice the extra head bolt boss at the rear of the block. (2nd picture)
P-7 heads use 20 studs.

I asked Kent about machining the XR to accept the P-5 HEMI. I think it's possible
but, doubt it will happen. 430"+ P-5 HEMI??!!

Holes drilled to the inside of the lifter bores are pilot holes to the oil feed. Then the
pre-drilled bushings were pressed in and honed. Just happens to be the way this
particular machinist chose to do it.

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340!

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OK......

I was kidding. 447" with W-8s

4.155" x 4.125"

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Gonna run one of them big blocks hidden in a small
block cover.... cool

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OK......

I was kidding. 447" with W-8s

4.155" x 4.125"

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I'm sure they will post.
Looking for one?

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OK......

I was kidding. 447" with W-8s

4.155" x 4.125"

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Looks like rpm is still in the picture!!

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Not near as much as a 3" arm. but will be nice for sure.

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I'm sure they will post.
Looking for one?

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I might be...
Just thinking about next engine and was thinking a big cube W-8 motor would run good.Thinking 4.185x4.25 and having a 468 cuin small block.

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Someone educate me on the benefits of the XR1 Ritter block over an R3. I understand the market for the XR2 to get a taller deck, larger cube P7 headed combo but I just don't see the need in the XR1. IMO if Kent would have had the XR1 done in aluminum he'd sell quite a few. I for one would buy one or two myself.

Mike Gray

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Mike he told me he would have the first 3 aluminum blocks ready near the first of April. Mine will be machined for the P5 head. May also get myself one for the W8 heads.

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Someone educate me on the benefits of the XR1 Ritter block over an R3. I understand the market for the XR2 to get a taller deck, larger cube P7 headed combo but I just don't see the need in the XR1. IMO if Kent would have had the XR1 done in aluminum he'd sell quite a few. I for one would buy one or two myself.

Mike Gray

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Thanks Marty!

Where does anyone find any information on these blocks short of calling Kent? I've never had any success with him calling me back. I was told of some cam core and distributor issues with the blocks have they been addressed? Is their a webiste. I know Rick Luizzo (sp?) was involved in these blocks as well but it looks like he's fallen off the radar.

Mike Gray

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Someone educate me on the benefits of the XR1 Ritter block over an R3. I understand the market for the XR2 to get a taller deck, larger cube P7 headed combo but I just don't see the need in the XR1. IMO if Kent would have had the XR1 done in aluminum he'd sell quite a few. I for one would buy one or two myself.

Mike Gray

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XR blocks use all 5 billet main caps, fully sealed cam tunnel, & a true priority main oil feed that is seperate from the lifter galleys. It weighs more than the R3's & has different freeze plug diameters.... little different lifter boss design.... that's about the differences. They cost about $600 more than an R3 (without bushings) the one SST showed is an upgraded bushed block done by Brian Tillburg here in PA who is doing the bushings for Kent, which costs extra. The additional cost over n R3 is basically to offset the Billet main caps & ARP studs they come with.

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My question still stands what is the niche for the XR1? In my experience the R3 will handle anything you want to throw at it. Why not do them in aluminum? Didn't Ernie Elliott make a run of aluminum blocks? Does anyone know if they exist? Deck height, etc.

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Someone educate me on the benefits of the XR1 Ritter block over an R3. I understand the market for the XR2 to get a taller deck, larger cube P7 headed combo but I just don't see the need in the XR1. IMO if Kent would have had the XR1 done in aluminum he'd sell quite a few. I for one would buy one or two myself.

Mike Gray

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XR blocks use all 5 billet main caps, fully sealed cam tunnel, & a true priority main oil feed that is seperate from the lifter galleys. It weighs more than the R3's & has different freeze plug diameters.... little different lifter boss design.... that's about the differences. They cost about $600 more than an R3 (without bushings) the one SST showed is an upgraded bushed block done by Brian Tillburg here in PA who is doing the bushings for Kent, which costs extra. The additional cost over n R3 is basically to offset the Billet main caps & ARP studs they come with.

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for 30lb or 40 lbs not really worth the casheesh for alum,make sense to me

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I would think aluminum would be more than 30#-40# lighter. Where did those numbers come from? I'm willing to pay and I'm sure there are others as well. Nice thing about aluminum is if you hurt it, it can be repaired.

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for 30lb or 40 lbs not really worth the casheesh for alum,make sense to me

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Another keeper, good post ,Thanks

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I agree. Someone needs to start a dedicated website just for small block Mopar non production blocks and heads. Maybe I should start gathering info.

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I see i'm beating a dead horse here. I forgot Mopar people are cheap. I'm just tired of beating my head against the wall with the SB stuff. Spent a lot of money and we are still just a participant, I want to be the car to beat. Time to look more seriously at the Predator or 99 Hemi stuff. Flame on!

Mike Gray

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Its not that mopar people are cheap, its just that people with money wont spend it on oddball motors. Maybe Ritter thinks most mopar people are fat, and would be easier if they cut back on the bacon and butter than to cast an aluminum block.

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I hope they make a aluminum xr2 block.If they do I will be one of the first ones to buy one.Kenny

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I see i'm beating a dead horse here. I forgot Mopar people are cheap. I'm just tired of beating my head against the wall with the SB stuff. Spent a lot of money and we are still just a participant, I want to be the car to beat. Time to look more seriously at the Predator or 99 Hemi stuff. Flame on!

Mike Gray

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Its not that mopar people are cheap, its just that people with money wont spend it on oddball motors. Maybe Ritter thinks most mopar people are fat, and would be easier if they cut back on the bacon and butter than to cast an aluminum block.

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And an R3/W8 motor isn't "oddball"?

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I see i'm beating a dead horse here. I forgot Mopar people are cheap. I'm just tired of beating my head against the wall with the SB stuff. Spent a lot of money and we are still just a participant, I want to be the car to beat. Time to look more seriously at the Predator or 99 Hemi stuff. Flame on!

Mike Gray

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Its not that mopar people are cheap, its just that people with money wont spend it on oddball motors. Maybe Ritter thinks most mopar people are fat, and would be easier if they cut back on the bacon and butter than to cast an aluminum block.

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And an R3/W8 motor isn't "oddball".

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The problem seems to be most Mopar guys who race want to do it on a low budget. Which is ok if going fast is not a real concern. Ford and chevy dominate because there is an endless supply of aftermarket parts. The ford and chevy guys are not running stock parts. If more mopar people were willing to buy aftermarket parts like blocks,heads, etc. There would be more available and at a cheaper price. If mopar or Kent built 500 blocks each per year and W8, W9, P5, and a selest few others were easily attainable then the market would be flooded with them. Kent would not need to make another block for years. 90% of them would be collecting dust in some Mopar guys shop. W8 heads are about as good as any head out there by any manufacturer. If canted valves are legal in your class then the P5 should be as good as any other brands. P7's are good as well but the block is the weak link. The market is based on supply and demand. If the public does not demand it then the manufacturers wont supply it. I agree with Mike. The W8/R/3 is not odd. It needs some updating perhaps. But until Mopar guys realize a Q4 headed smallblock will never compete with the vast array of aftermarket ford and chevies out there. You guys need

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P7's are good as well but the block is the weak link.

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how is the R5 block a weak link

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P7's are good as well but the block is the weak link.

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how is the R5 block a weak link

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Many P7's laying around, where are the blocks?

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The problem seems to be most Mopar guys who race want to do it on a low budget. Which is ok if going fast is not a real concern. Ford and chevy dominate because there is an endless supply of aftermarket parts. The ford and chevy guys are not running stock parts. If more mopar people were willing to buy aftermarket parts like blocks,heads, etc. There would be more available and at a cheaper price. If mopar or Kent built 500 blocks each per year and W8, W9, P5, and a selest few others were easily attainable then the market would be flooded with them. Kent would not need to make another block for years. 90% of them would be collecting dust in some Mopar guys shop. W8 heads are about as good as any head out there by any manufacturer. If canted valves are legal in your class then the P5 should be as good as any other brands. P7's are good as well but the block is the weak link. The market is based on supply and demand. If the public does not demand it then the manufacturers wont supply it. I agree with Mike. The W8/R/3 is not odd. It needs some updating perhaps. But until Mopar guys realize a Q4 headed smallblock will never compete with the vast array of aftermarket ford and chevies out there. You guys need

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I disagree. Everyone likes to say mopar guys are just cheap. Well, the reason there is no aftermarket is because there is NO demand, that we can agree on. The issue is why is there no demand? Is it really just as simple as "mopar guys are cheap"? Or is because Chrysler corparation hasnt made one decent, light, affordable, well suspended, rear wheel drive that houses these particular engines since the Nixon administration? People with cash wanting to get into this hobby dont wanna mess with old rustpiles. Especially when you can go to the craigslist and pick up a clean fox body for well under 10k. And less body choices means less demand for the engines. Open up a car trader and count the camaros and stangs made thru the 90's. People are still messing with those because they can still be had without rusted out floors and shag carpet on the dash. Yes, w8's, all mopar smallblocks in all configuration are oddballs compared to the other guys. They probably outnumber us 200 to one, and that isnt gonna change because mopar cars are getting rare. If dodge did what Ford and Gm did in the last two decades, there would be scads of mopars, aluminum blocks, and 400+ heads out the wazoo like the others have AND NEW PEOPLE getting into mopars. Guess its just more fun to say mopars guys are cheap, all 3 of us left.

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The problem seems to be most Mopar guys who race want to do it on a low budget. Which is ok if going fast is not a real concern. Ford and chevy dominate because there is an endless supply of aftermarket parts. The ford and chevy guys are not running stock parts. If more mopar people were willing to buy aftermarket parts like blocks,heads, etc. There would be more available and at a cheaper price. If mopar or Kent built 500 blocks each per year and W8, W9, P5, and a selest few others were easily attainable then the market would be flooded with them. Kent would not need to make another block for years. 90% of them would be collecting dust in some Mopar guys shop. W8 heads are about as good as any head out there by any manufacturer. If canted valves are legal in your class then the P5 should be as good as any other brands. P7's are good as well but the block is the weak link. The market is based on supply and demand. If the public does not demand it then the manufacturers wont supply it. I agree with Mike. The W8/R/3 is not odd. It needs some updating perhaps. But until Mopar guys realize a Q4 headed smallblock will never compete with the vast array of aftermarket ford and chevies out there. You guys need

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I disagree. Everyone likes to say mopar guys are just cheap. Well, the reason there is no aftermarket is because there is NO demand, that we can agree on. The issue is why is there no demand? Is it really just as simple as "mopar guys are cheap"? Or is because Chrysler corparation hasnt made one decent, light, affordable, well suspended, rear wheel drive that houses these particular engines since the Nixon administration? People with cash wanting to get into this hobby dont wanna mess with old rustpiles. Especially when you can go to the craigslist and pick up a clean fox body for well under 10k. And less body choices means less demand for the engines. Open up a car trader and count the camaros and stangs made thru the 90's. People are still messing with those because they can still be had without rusted out floors and shag carpet on the dash. Yes, w8's, all mopar smallblocks in all configuration are oddballs compared to the other guys. They probably outnumber us 200 to one, and that isnt gonna change because mopar cars are getting rare. If dodge did what Ford and Gm did in the last two decades, there would be scads of mopars, aluminum blocks, and 400+ heads out the wazoo like the others have AND NEW PEOPLE getting into mopars. Guess its just more fun to say mopars guys are cheap, all 3 of us left.

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well this is what i feel,there are maybe 50 super bad A#^ sb mopars in the country,when i say bad i mean 8's,so u guys are pioneers..chevy and ford have spent millions on research..mopar hasn't spent doo doo in yrs...my respect and i think 99pct of chevy guys respect u guys alot..cause they know it aint easy with a mopar sb btw 50 might be a little high

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50 is probably a high # I would think. I do get alot of respect for sure from the Ford and Chevy guys. But I am a hardcore Mopar guy. I am planning on building a new 10.5 Challenger this year. Will it have a Gen II hemi or a radical smallblock? That has yet to be decided. Will the Gen III hemi and the new challenger bring Mopars racing back to its glory days? Who knows. All I am saying is if more of the mopar community was willing to spend a little extra here and there I believe more parts would be available to us. I know everyone has a limited budget for racing. I set out an entire year to switch from NOS to a procharger. Was I the fastest car? No! But I made every race, even after hitting the wall, dropping a valve, and shearing the geardrive bolts off the balancer. It took dedication and alot of elbow grease. I won the championship by one point. Since I was not the fastest car I did alot of research and decided to switch to a turbo. A procharger and geardrive eats up alot of power on a 360" motor. I run an overweight A-body against a slew of modern mustangs and camaros. Do they have an advantage? Yes. They are lighter and have a vast assortment of parts to choose from. Do I make more power than them? Yes I do. And will do even better at it this year. Ford and chevy are not the ones building the parts in these high horsepower engines, the aftermarket community is. There were more darts, demons, dusters, valiants, and barracudas built than 67-69 camaros. And I bet there are 20 times more camaros from this era that can outrun the racy built Mopars. It started when we started worrying about these cars values rather than how fast we can make one run. I am willing to build whatever is available to me to make me competitive in whichever class I choose to run. And its no more expensive to build a Mopar than a chevy or ford when it comes to real power these days. Just harder to find the right parts. Good luck to you all. See you in the staging lanes!

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my
most mopar guys are to cheap to spend the coin on a high end build.
they rely on companys to spit out mass production stuff or buy older tech knowledge hoping to compete with other brands, this is where you need to go out side the box on a build.

i will have more in my P7 heads and intake when they come back from Slawko then most on here have in there entire motor.

and you are not going to get the knowledge from what i call your average hack builder/assembler

you need to aline your self with high end builders that has done them and proved that they are the best.

and for the R5 cast block its a siamesed bore that can be bored 4.250 no problem and is fully skrited with 6 bolt billet mains/sealed cam tunnel with a 60 mm roller, perfect valve train geo. and a 20 bolt head. it dont get any better than that other than the open deck design which is like a desiel motor and they put tons of boost to them with no problems, so i dont see why you couldnt put boost to a R5 also.
REI that speacializes in turbo builds near me looked at my R5 block when they flowed my Davis heads and said they wouldnt be scared to do a boosted deal with one, and make ALOT of power no problem.

R5 blocks are everywhere for sale, just need to contact the right guys.

Bob

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my
most mopar guys are to cheap to spend the coin on a high end build.
they rely on companys to spit out mass production stuff or buy older tech knowledge hoping to compete with other brands, this is where you need to go out side the box on a build.

i will have more in my P7 heads and intake when they come back from Slawko then most on here have in there entire motor.

and you are not going to get the knowledge from what i call your average hack builder/assembler

you need to aline your self with high end builders that has done them and proved that they are the best.

and for the R5 cast block its a siamesed bore that can be bored 4.250 no problem and is fully skrited with 6 bolt billet mains/sealed cam tunnel with a 60 mm roller, perfect valve train geo. and a 20 bolt head. it dont get any better than that other than the open deck design which is like a desiel motor and they put tons of boost to them with no problems, so i dont see why you couldnt put boost to a R5 also.
REI that speacializes in turbo builds near me looked at my R5 block when they flowed my Davis heads and said they wouldnt be scared to do a boosted deal with one, and make ALOT of power no problem.

R5 blocks are everywhere for sale, just need to contact the right guys.

Bob

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Not to hijack, but do you know how much a bare R5 block weighs?

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With Bob. How many blocks you guys want? I can get probably 10 right now for around 800-1000. Just have to know the right guys.

I don't know block weight but a complete engine weighs right around 443

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Luckily there are substantial amount of P7 heads being stashed and somebody making blocks that will accomodate them.

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I've seen that first hand. They are stacked like cord wood. And I'd say where I seen them, there were at least 6 full cords

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my
most mopar guys are to cheap to spend the coin on a high end build.
they rely on companys to spit out mass production stuff or buy older tech knowledge hoping to compete with other brands, this is where you need to go out side the box on a build.

i will have more in my P7 heads and intake when they come back from Slawko then most on here have in there entire motor.

and you are not going to get the knowledge from what i call your average hack builder/assembler

you need to aline your self with high end builders that has done them and proved that they are the best.

and for the R5 cast block its a siamesed bore that can be bored 4.250 no problem and is fully skrited with 6 bolt billet mains/sealed cam tunnel with a 60 mm roller, perfect valve train geo. and a 20 bolt head. it dont get any better than that other than the open deck design which is like a desiel motor and they put tons of boost to them with no problems, so i dont see why you couldnt put boost to a R5 also.
REI that speacializes in turbo builds near me looked at my R5 block when they flowed my Davis heads and said they wouldnt be scared to do a boosted deal with one, and make ALOT of power no problem.

R5 blocks are everywhere for sale, just need to contact the right guys.

Bob

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I have to Agree with BOB!!
1: It's knowing who to talk to
2: Don't be a cheap-aXX!!

When I finally decided to get serious about my Turbo Build and get an R3 and W9's. Mopar was selling W9's for $900/pr and their R3 was in the middle of a 2yr freeze. Got a pair on myshelf that I can't give away cause no one wants to spend the money to set them up to use. Sorry but be it Ford or Chevy or Mopar, Head parts all cost the same.

I just by Chance found a 468" (P4876673) short block one night on here for $6500. Had a Billet crank. aluminum rods and Ross Pistons. Knowing what I was going to do and what was in the block. $6500 was a smoking deal!! Even addressing the fact that the Rods and Pistons would probably be useless to me.

Before I got home (Texas to Va and back) I had a Message on my phone about some heads that might fit my build. W9-RPs fully dressed for a sprint car. After doing some research and getting the details figured out. The $4200 asking price again was a steal for what I got. And I have recently found out that what I got in the W9-RP heads is more than I thought I was getting when I bought them. The W9-RP is actually the same as the Chevy SB2 heads to the point that a well known builder (not a Mopar builder either) uses the same port program for both heads. The SB2s are what the FAST small block chevy guys run.

I also got a chance to actually get a set of SB2's in my hand and look them over. They are just like the W9-RP. The guy that had them in his shop told me his customer had almost Twice as much in them as I had in mine for the exact same capability of parts.

So the Engine parts are out there and rather easy and not too expensive to come by!!(No more than the Ford or Chevy equivalent) I know Mopar still makes the P4876673 Block and I think you can still get the W9-RP heads from them. If you can't make enough power with those 2 you need a new engine builder or alot more cubes!!

Far as the Cars themselves!!! Yeah we are kind of screwed on that one. To be competitive you need a car you can get down below 2400lbs. Which in my Personal selection would be the 1965-1975 Barracudas and Darts and Dusters or variations there of. All the ones I have looked at lately your going to pay $8000+ for a rust bucket with all the parts there.

If you like them some of the cars from the 80's fit the bill well and cheap BUT personally I think they are BUTT-UGLY!! That's just me!!

I personally got a '99 Dakota R/T at BondoBob's shop being hacked on for a tube chassis 25.3SFI and my 468 with Twins. Hopefully I'll get out of this desert some day to get it all together and enjoy.

That being said!!! The Ford and Chevy guys spend a lot more money than people think they do. My buddies 2005 Mustang in Outlaw 10.5 with a 665cui Disomma Ford and Twins cost him $200,000.

Now if your looking to get into this league of racing there are a few fiberglass door-slammer bodies out there to be had or built!! Again NOT CHEAP!!

Take a look at some of the builders web pages that build stuff for those Fast Chevies and Fords and you'll see that Mopar stuff is not off the mark in pricing!! Availability on the other hand? It's just knowing who to talk to. BUT Honestly it's that way in Chevy and Ford circles as well if your not running a class dictated set-up that everybody and there brother has copy of, that is still $40-90K

As for builders. Try looking out of the norm of people that are labeled as Mopar builders. I have about decided on who will put mine together when it comes that time and he isn't know for Building Mopars but those that he has make some serious power. (980hp on 420cui N/A)

Only place I could say that Mopar has a slight legit excuse is the availability of decent donor cars for a Race Build. But even that is negligible. I have seen many Prior Race Mopars for sale for less than $10k that if they weren't a Race car could have easily been Twice that.

On the Modern note. The GenIII hemi made 700hp at the engine masters challenge this year on crappy 91octane fuel. That being said; the 2008 Challnger isn't exactly the Model of aerodynamics for a race car or a lite-weight either. Nor cheap even for a wrecked one!! I looked hard and couldn't find even wrecked ones that were usable for less than $18,000.

Now quit the snivling and gette'rdun!! or just sit in the Bleachers and watch!!

If your driving a Mopar your probably someone that likes to be different from the Norm. (you would think that Thinking outside the box would be in there as well but some seem to miss that point) Being different has it's Cost so suck it up and pay the price and the dues!!

I would like to thank:
Leon, BondoBob, Mike Gray, and Chris Uratchko for helping me see the light and have faith in Mopar!! Also thanks to my Chevy and Ford buddies for letting me hang around and see what the Other-Guys are working with, take notes and see how they get it done!!

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Luckily there are substantial amount of P7 heads being stashed and somebody making blocks that will accomodate them.

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I've seen that first hand. They are stacked like cord wood. And I'd say where I seen them, there were at least 6 full cords

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I see i'm beating a dead horse here. I forgot Mopar people are cheap. I'm just tired of beating my head against the wall with the SB stuff. Spent a lot of money and we are still just a participant, I want to be the car to beat. Time to look more seriously at the Predator or 99 Hemi stuff. Flame on!

Mike Gray

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I see i'm beating a dead horse here. I forgot Mopar people are cheap. I'm just tired of beating my head against the wall with the SB stuff. Spent a lot of money and we are still just a participant, I want to be the car to beat. Time to look more seriously at the Predator or 99 Hemi stuff. Flame on!

Mike Gray

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Sorry for Dragging up an Old Post BUT: some new found Friends and Knowledge have shed some lights on your Comment. and I have to Agree!

Your right if your running a SB your just going to be another participant. Ask Billy Glidden: He's been pushing a SB Ford against all the others in his class for years and last 1-2 years finally admitted he's going to finally have to bite the bullet and go BIG or Go Home.

Only way your going to be the CAR TO BEAT with Mopar Power is 1 of 2 ways.

1: Indy Maxx 655 with Predator Heads and a Pair of 88-91mm Turbos out front.

2: Jon Kaase 820cui Mopar Hemi (He does Hemis in 3 flavors) and 3-5 stages of nitrous.

And have it in a car that's under 2800lbs.

There was a Guy out of Va that had a W9 headed single turbo Blow Through in an Avenger on Alcohol. Made a few 6.9 passes but haven't heard anything since. Had potential BUT no dedication I guess?

Problem with SB is the maintenance, and it ain't oil changes either.

Honestly when you get to those levels, I'd be calling on people like Sonny, Kaase, or Fulton.

Most of the guys that run their engines the only thing Ford or Chevy about their vehicles is the appearance.

I know 1 guy that has Run Fords, Chevies and Pontiacs and all had Fulton Power under the hood. That's all he'll run. He could car less what the actual car is.

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Kenny, those combinations are not legal for our local small tire class. We went to a dual disc clutch and Browell 8 5/8 can as well as putting the Dart on a 250 pound weight loss program. We went out last weekend for the first time this year and we weren't even close on the clutch, we will be testing tomorrow and racing Sat. if all goes well. Trying to make the best of what we have.

Mike Gray

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I see i'm beating a dead horse here. I forgot Mopar people are cheap. I'm just tired of beating my head against the wall with the SB stuff. Spent a lot of money and we are still just a participant, I want to be the car to beat. Time to look more seriously at the Predator or 99 Hemi stuff. Flame on!

Mike Gray

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Sorry for Dragging up an Old Post BUT: some new found Friends and Knowledge have shed some lights on your Comment. and I have to Agree!

Your right if your running a SB your just going to be another participant. Ask Billy Glidden: He's been pushing a SB Ford against all the others in his class for years and last 1-2 years finally admitted he's going to finally have to bite the bullet and go BIG or Go Home.

Only way your going to be the CAR TO BEAT with Mopar Power is 1 of 2 ways.

1: Indy Maxx 655 with Predator Heads and a Pair of 88-91mm Turbos out front.

2: Jon Kaase 820cui Mopar Hemi (He does Hemis in 3 flavors) and 3-5 stages of nitrous.

And have it in a car that's under 2800lbs.

There was a Guy out of Va that had a W9 headed single turbo Blow Through in an Avenger on Alcohol. Made a few 6.9 passes but haven't heard anything since. Had potential BUT no dedication I guess?

Problem with SB is the maintenance, and it ain't oil changes either.

Honestly when you get to those levels, I'd be calling on people like Sonny, Kaase, or Fulton.

Most of the guys that run their engines the only thing Ford or Chevy about their vehicles is the appearance.

I know 1 guy that has Run Fords, Chevies and Pontiacs and all had Fulton Power under the hood. That's all he'll run. He could car less what the actual car is.

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Kenny, those combinations are not legal for our local small tire class. We went to a dual disc clutch and Browell 8 5/8 can as well as putting the Dart on a 250 pound weight loss program. We went out last weekend for the first time this year and we weren't even close on the clutch, we will be testing tomorrow and racing Sat. if all goes well. Trying to make the best of what we have.

Mike Gray

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Kenny, we run a 28x10.5 (3055S) Mickey Thompson. Here are the rules for our class, heavy hitters are in the 5.00 to 5.20 ET range. We ran a 5.30 last year at 3240 pounds and a single disc clutch. We are now right at 3000 pounds.

http://king-of-the-streets.org/Street%20Race%20Rules%202011.htm

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Sorry, I would have to disagree about the W9's being the same as the GM SB2 heads. A well flowed CFE W8 head is around 420 @ 0.9 lift where a SB2.2 head @0.9 lift has been around 450.

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Sorry, I would have to disagree about the W9's being the same as the GM SB2 heads. A well flowed CFE W8 head is around 420 @ 0.9 lift where a SB2.2 head @0.9 lift has been around 450.

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Not my statement but a repeat of what an engine builder that has worked with both heads told me.

These were W9-RPs and SB2s. He said he used they same program on his CNC to port both.

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The only other head for a smallblock that would be better is the P5 and they don't make them anymore. Matt

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P5 Dodge

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The only other head for a smallblock that would be better is the P5 and they don't make them anymore. Matt

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P5 Dodge

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The only other head for a smallblock that would be better is the P5 and they don't make them anymore. Matt

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P5 Dodge

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Do they have the R4 blocks as well? OR would a Ritter XR-block work?

Are they having those made? Or are they getting them from who-ever in Australia started copying them?
I don't think that the XR block would work with the P5. If they could make it work then IMO you would have a winning combination. I an not sold on the P7 deal I don't think it would work as well as a P5. But what do I know. LOL

From what I read the Mopar castings were a bit thin, and tended to crack in the runners after porting.

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Ritter told me he can ma nine his blo k to accept the P5 head. Problem is the head itself. They still have water leak issues. I wanted to build a tall deck P5 hemi motor for 10.5 . But no organization would legalize them in my opinion. A gen3 hemi needs alot more head bolts if your going to a max effort program. Maybe we can get Chryslers engineers to look into redesigning the block and heads to a 18 head stud design. Yes right.

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They probably wont because of the advantages of using the head. I mean there is alot more to winning races than the engine, but every little bite helps.
As for the G3 extra head bolts i don't think it would be to hard to add the bolts provisions but right now there is no head with the extra bolt soooo.
I would like to now if the G3 aluminum block would work with the P5 head.

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Ritter told me he can ma nine his blo k to accept the P5 head. Problem is the head itself. They still have water leak issues. I wanted to build a tall deck P5 hemi motor for 10.5 . But no organization would legalize them in my opinion. A gen3 hemi needs alot more head bolts if your going to a max effort program. Maybe we can get Chryslers engineers to look into redesigning the block and heads to a 18 head stud design. Yes right.

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They probably wont because of the advantages of using the head. I mean there is alot more to winning races than the engine, but every little bite helps.
As for the G3 extra head bolts i don't think it would be to hard to add the bolts provisions but right now there is no head with the extra bolt soooo.
I would like to now if the G3 aluminum block would work with the P5 head.

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I hear that there is a 6 bolt head soon to be released....

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Ritter told me he can ma nine his blo k to accept the P5 head. Problem is the head itself. They still have water leak issues. I wanted to build a tall deck P5 hemi motor for 10.5 . But no organization would legalize them in my opinion. A gen3 hemi needs alot more head bolts if your going to a max effort program. Maybe we can get Chryslers engineers to look into redesigning the block and heads to a 18 head stud design. Yes right.

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ZIPPY used to keep a post updated with available R-3/R-4 blocks in the "HOT DEALS" section.

The last time I saw it.

........there were some P-5 machined R-4 blocks in stock.

I can't find the post.

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Aussie Pro Stock runs them at 399 cubes generally. Most of the Aussie Pro Stock blocks run around a 8.7"-9.0" deck. I think the R4's are around 8.8"-8.9" standard. Most comp guys will deck them down as far as 8.4" (which basically starts to cut into the bell housing pattern).
The Aussie heads are an exact copy, right down to the cracks apparently.
AL...

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I would like to publicly retract the off the cuff comment made about the Aussie P5 heads. I based it on what has turned out to be misinformed information and Con @ PRE (He produces these heads) has been more than willing to show me in person his castings improvements over the factory produced units. I think we sometimes forget that what may consider passing comments can have an negative impact on others to which I apologize. I won't be doing it again!

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DakFink,

I met with Richard Maskin a couple of years ago and dicussed the possibility of producing a block. It was going to be a 2 year/$250,000 dollar project doing it with Dart. I didn't consider it a viable business proposition.

I've been trying to get in contact with Kent Ritter regarding his XR blocks. They look like they are the key to a big cubic inch P5 style motor.

I would love to build a 440-450ci motor to see what it is capable of!


P.S. I have 5 R4/P5 blocks and last I knew there were about 10 in stock at Chrysler/Michigan. Maybe Zippy can update us.

You would struggle getting anything bigger than a 3.625" stroke in the R4 block though. A 4.225" bore hasn't been an issue so far!

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