8.99 @ 3100lbs?

If you were attempting to go 8.99 in a 3100lb car, how would you do it NA? What kind of power would it take? Gear set?

Well I'm an idiot. My car is 3500+ with me in it. I expect it to to 8.70's. Doing it with a Bischoff 574 B1MC motor making 1060 hp naturally aspirated no power adders. I'm old school......... Hope to hit the track in a few weeks.

At 3100 lbs, I think you only need 850 hp. Easy to do.

1st of all I’m checking Mapquest and seeing what’s closer…. Sonoma CA, Mission BC, Cecil Co MD. If I’m rainbow chasing I want to hit the easy button right off the bat!

Not Thunder Valley? LOL.

Cecil County MD.......

Sorry all i know is BB nitrous. Last NA pass i made at 3400lbs was 10.40 LMAO

3500??? and what are you waiting for??? hasnt it been done for a while now???

Sonoma Raceway does not have a Summit ET Series Team/Program this year or years going forward. If You didn't make the Div 7 Lucas Oil Sportsman Race (done this year) or the Camping Word Pro Nationals (done as well) You're not going to run at Sonoma any time this Calendar year (2021). Sac Raceway has a variety of Dates coming up if You feel like driving and Sac is a lot closer than Mission or Cecil Creek? Famosa Raceway still has ANRA and Team Famoso races on the Calendar but It will be hot just like Sacramento. You're in Arizona correct? Las Vegas, Firebird in Idaho and Tucson in Arizona sound like realistic choices.

We go 9.50's @ 4023lb (w/d). Using a not too radical 900hp 580 wedge N/A. Pretty sure we'd bust the 8's @ 3100lb

Serious note.....572 B! 13:1+ compression Large roller cam, SLR will need experimentation and im bad with NA, LOL but i would think 3 speed with 4.30? Ask Al ALguire for sure

One of the EFI cars that I help tune runs 8.90 to 9.00. It is a Studebaker with a 565 BB Chevy engine. Weighs around 3200 or 3300 lbs and makes close to 900 hp. He has a 3.89 rear gear with a Powerglide. Fairly easy engine to build in the BB Chevy world, not too hard to round up the parts to make a 900 hp BB Mopar. You would want an aftermarket block and decent heads, maybe 345 -1 heads or something along that line. Or just build a 572 with 572-13 heads. Costs a little more to build up front but you'll have 1000 hp which should put you deeper into the 8's and it could last a long time if you go with a mellower camshaft.

Shoot for at least an honest 850hp STP.

Might take more depending on the track conditions, car efficiency, etc.

At 3000lb car w/o driver. You will need every bit of 925hp. And hope your suspension can support it.

One fiddy + mph….

In Jeff’s B bod that’s definitely the direction I’d be looking….

I’d like to hit that 8 sec mark…. But my bucket of mph is empty. 4-5 more would seal the deal

Call Goodwin

Jeff i dynoed about 847 with my 528 on alky and managed 8.78 at BIR on MT radial 14.5 x 33 slicks, torqueflite, 3000 lbs+. With a stick and another 50 to 100 lbs you will be on the edge on a good day IMHO.
At least fully ported 440-1 heads, 3X INTAKE 284/296/114 cam with .800+ lift and some serious valve springs, rockers and pushrods, 14+ compression and I like injected alky. If you come up short a tenth fatten the injecters about 8 % and run M5 alky.

Greg, what rear gear do you currently have in the car?

I'm at about 3600 lbs motor went 1060 hp on engine dyno but the real problem i have been having is traction on the hit.

My -1 Indy headed motor has run a bunch of 9.05 at 3330lbs earlier this year in subpar air. 10.5 tires off the footbrake. Best of 9.0@150@3350 running Eddy carbs
Doug

Doug, what rear gear do you run? 31” tall tire?

Hope to let you know soon.

588 B1 Originals built by BES
727
dana with 4.56 gears
29.5 x 10.5 tires
3400 lbs
Footbrake car

Casey FJ

4.56 with either 33x15 GY or Hoosier 10.5x33. Trapping 154 best at 7400 rpm. I assume you will be running a 4speed?

Thats what im talking about !!! WHat kind of HP did that make???

10.5Wx31 M/T. Currently has a 4.30.. It's also had a 4.10. Not much difference. 7200-7300 depending on weather.
Doug

DO rules dictate the 3300lb weight?? it would be nice to see what it would run at 2900-3000

Tough to get a NSS car much lighter. Tubular K members and racks are not legal. They must have "full" interior, meaning no gutted cars. An aluminum block would be the biggest weight loss for Doug at this point.

Not sure on the trans. It will not be the Jerico.

That MegaBlock has to go !!! LOL Id be all over an aluminum block and there got to be some more hitchhikers on there....IF there no weight limit id be cutting everywhere lol , I know his car is pretty trick but id be looking all the time for that extra lb

we have 2 nss hemi cars. one with mega block weighs 3150 and goes 8.80s. the other has alum block and weighs 2950. not yet sorted out.
both are 64 plymouths all steel less hoods.

64 with Aluminum but that is huge money. Might have to acid dip a few panels to take some weight off. NSS with a 605 Hemi, some were I live are making a lot of HP over 1300 but you start to live on the edge. Would rather back the motor off and go 899 without hurting things. Only other way I see it to change to a 67 8 9 A Body. there is your weight loss and 67=8=9 all have Big Blocks and 68s Hemis. One problem that was found is the front end on a 68 Cuda with a 605 making a lot of HP the MPH at the top end makes the front end of the car feel very lite,

figure 6 to 8 percent slip for the auto, so the stick might want that much more gear.

Not a mopar but fast. Grand Am 3200 pounds 278 cube small block Chevy, did have a 266 but went back. 8.30-40s last time I heard. Comp Car. Shifts at 10,500 11,000 I think. I’ll call him tomorrow to see how fast now.

It could get lighter for sure. As stated an aluminum block would be the biggest move. Still has steel bumpers and deck lid. Also the American 200s are heavy. But I like the way it looks. This year it should around 3310- 3320 race weight with me (195). I think Jakes quoted weights are without driver.
Doug

Just for info swapping out from a 528ci Mega block to a 572ci KB saved only 70lb, heads (572-13) exhaust and induction were all the same, no other changes. We eventually knocked off 4 10ths and added 5 mph to the terminal, best for best.

I know you said "NA" and there are plenty that do that. However, they are probably pretty radical and expensive motors not to mention the gearing/converter you have to use.

Just curious, why "NA"? Class rules, etc?

I ask because a single turbo and a decent motor will get you there easily and it will be super driveable.

I am at 3,480 lbs with a "Magnum" series stock block motor 389 CI, home ported Eddy heads, .520 hydraulic roller, 9.5:1 compression, T4 78mm turbo, 3.55 gear, 3,500 converter, shift at 6,000 cross a 6,000, through full exhaust with power steering, power brakes, etc. So far on only 13 lbs of boost I have run 9.9's. I am going to up the boost this fall to 17 lbs (which is about the limits of this "cheapo" turbo) and should be in the mid 9's at almost 3,500 lbs. Drop the weight to your 3,100 and it is still a little short at around 9.teens.

The goal of my truck was 10.9's and it was built with that in mind. But I plan to upgrade to either a better T4 turbo or go with a T6 88mm and should be able to run solid 8's at almost 400 lbs more, which is your goal.

Just my .02

Why? It's a simple bracket car. Don't know many that are running a turbo, and going rounds at a bracket race.

If the point of the question is to determine 'can it be done' for your own current new combo of parts. My answer would be 'absolutely'. There are alot of ways to skin a cat. Would most run a manual trans in a bracket car? etc etc...Answering the question at face value, because at 3100lbs you'll need a good 850HP, I'd say SS valve orig B1 'clean-up' ported (see IMM porting threads) on a 572" shortblock...(because I like Big blocks) And I'd use either a t400 or PG on a midplate/adapter. That being said Dartin' is using the 345 cnc Indy's on a 540 with only 12.5:1 and a .730 net lift 'gentle profile' 306/273 cam. At 3100lbs around here he'd be in the 8's in good air.

Ok, I didn't see where you mentioned it was for a "simple bracket car", at least in the initial post. But you can still use a turbo for bracket racing. Lots of turbo cars are deadly consistent and have a great top end charge which is good for a bracket car. Good luck in whatever option you take!

Tell 'em if he wants a brand new alum. low deck Wedge KB block, I still have a brand new one sitting in the crate that I am most likely not going to use now. I'm about to post it for sale, but others who know I have it keep in touch from time to time to see if I'll sell it. I hit them up yesterday and getting some interest, but no takers yet. It'll definitely help with weight loss if the rules will allow for the class.

uuuuuuh pm inbound

I have a 572 aluminum block with Big EZ heads on order with Best Machine. I'm thinking it should make 900 hp since my 514 with EZ heads made 900 hp. So if that is the case then I don't see any reason for the extra complication of B1 heads. I do think -1 or 572-13 heads would be the "safer" choice if a guy was shooting for 900+. In my case I went with a 572 since it was the same cost as a 540 but I'm using a dry sump. With a wet sump the extra stroke can get in the way depending on which pickup is being used. No doubt the EZ heads will cost me some power but I still think it will make 900 on the pump.

Pull this trigger Jeff and I could arrange FREE shipping….. but ya got 20 days to pay the man!

I hope to let you know in a couple weeks... Should hit the dyno at the end of August.

Casey FJ

I already have a aluminum INDY block, 4.375 Molnar crank and 7.1 Molnar rods, INDY 440-1 345CNC heads, 440-3X intake, and headers built for the car. Big ticket items left, are T&D rockers, vacuum pump, and Jesel belt drive. The rest is nickel and dime stuff.

I started this thread mainly just to get some discussion going on the board.

That combo should work. I've never had much luck with the 3X intake but it might work on that engine. Just have to try it and see. I tried it a few times and kept going back to a fully ported Super Victor which always worked better but I never tried the 3X on a really big engine. What are you going to run for a carb? 1250?

Most likely I'll run my 1050. I know a few people that run 1050's on engines that make 900-1000hp. Is a bigger carb NEEDED? I'm not sure. Doesn't mean it would hurt though. If I do anything different, it will probably be a carb from Thumper.

BTW, saw some pictures of your new 572 Andy, and it looks like it is going to be a killer piece. Looking forward to the dyno results.

870-900hp is plenty to run 8.90 at 3100, but the car needs to be on point. Well within the reach of a good -1 head for sure. I personally would likely use a B1 head(I know big surprise)but we always wanna go faster dont we. So why max out a head when you can have ore room to grow. Dyno numbers are dyno numbers but an HONEST 875 should get you there in a good car. Its simple math. FWIW my old Valiant went 9.0s at 150 with a stock block 511 with a B1 originals at 3470lbs.

Wes sent you a PM, just curious if its still available.

Yep, looks like Chuck put some pictures of the 572 up on their facebook page. I'm not a facebook guy so I had to look around for it.

Anything in the 900 to 1000 hp will pick up power with a bigger carb over a 1050. You could be leaving 30 or 40 dyno hp on the table with a 1050. The extra hp may or may not get you down the track quicker. Sometimes the smaller carb goes down the track just fine if the chassis doesn't like the extra power.

Since this post is running in a few directions and according to the OP, stimulating conversation...Andy, Why did you choose EZ heads for a 900HP target? And when i gave my opinion on how I would...that is why i mentioned Orig B1's ...because you have room to grow.

Has anyone ordered NEW B1 heads lately? I know single 4 intake manifolds have been discontinued for a while now. I would assume getting rockers, and valves wouldn't be an issue? Is Brodix still making the B1? Seems like everyone that has a set buys them used. No doubt they are the next best thing to a Predator head, as far as wedges go.

Scott can get a new set of heads no problem, these days the time frame is always a question. I think people buy them used because they don't wanna spend money for more than something like a -1 head. I have sold probably 7 used sets of B1's myself. As for a Predator head it is far superior to the B1 Original or MC head, easier to put a combo together than a TS and then there is the unicorn PSO stuff. different conversation there IMO.

As for carb size I would be say bigger will make more power. My current B1 deal has a 4150 on it because it was built for NSS stuff. But it has gone 8.90 at 3460, and even as good as the 4250i on it I m confident that it will be quicker with a good dominator. But until we run it and see its speculation.

But lots of ways to get to the power level the OP is looking for. Just personal preference.

The engine is going in a car with custom headers and the owner of the car didn't want to run a risk that his headers wouldn't fit so we went with EZ heads. Had it been my car I would've used 572-13 heads and changed the headers but on a customer's car you do what the customer wants. It isn't like it is a horrible decision, the guy is stepping up from a stock block 505 so the car is going to lose weight and pick up power. When he is ready to step up again down the road then the engine can come out for a refresh with new pistons and 572-13 heads and new headers and the guy will pick up a few more tenths.

Im about to buy a new set.... cant tell you what the wait time is going to be.??? But im hoping to have something done in a year?? or hopefully 7-9 months??

True.

My old Dart was similar weight as Al's Valiant, BMRE KB alum 540" 920HP on Vince Impasato's dyno, B1 O's with minimal work done and went best of 9.17/148 N/A with glide, cam/4.10 gear/converter setup for nitrous on a so-so track and 30" ET Streets. I think you will definitely achieve your goal N/A, especially if the car is working and on a good track.

Al, it's gone brother. PM'd you back.

425" Gen3 Hemi in a 70' Road Runner. We'll see....

LAWD HAVE MERCY……..Oh yeah!

How fast has this combo been?