Edelbrock rpm head questions..................... - Moparts Forums

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Edelbrock rpm head questions..................... #1092037 10/10/11 12:45 PM 10/10/11 12:45 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	I`ve been re-working my heads again because of a bet I have that someone says there`s NO WAY I can go 9.78 by rebuilding my heap so other than the tech archive photos, does any one have any otther photos I can check out or another post I can view? After intake work I ended up w/a 220cc port and my ex. went to 76cc`s which seem WAY short of the 228-81cc`s I thaught I read. Just looking for every last hp that can be gained till I get my Victors. Thankxxx guys........ 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092038 10/10/11 12:47 PM 10/10/11 12:47 PM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	Maybe open them up to MW and run a Indy intake Mopar Performance

Re: Edelbrock rpm head questions..................... [Re: moparniac] #1092039 10/10/11 12:49 PM 10/10/11 12:49 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	I thaught about that but I`d like to save that energy and work for the Victors plus I need to keep it as is to make a statement and some $$$$......... 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092040 10/10/11 12:54 PM 10/10/11 12:54 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	Are you doing any before & after flow bench comparisons, or are you just on 'em until you think they "look right"? FYI, I kind of bummed out somebody else on here when I tested their home-ported RPM heads and they didn't see nearly what they'd thought they would for all the work that had been done.

Re: Edelbrock rpm head questions..................... [Re: BradH] #1092041 10/10/11 01:04 PM 10/10/11 01:04 PM
Joined: Nov 2004 Posts: 3,544 Syracuse,NY CompWedgeEngines master
CompWedgeEngines master Joined: Nov 2004 Posts: 3,544 Syracuse,NY	Dom, I agree with Brad. If you dont have a flow bench, and know HOW to interpret the numbers, you could be doing more damage than good. Ebrocks have a pretty good port and chamber as is, BUT, they do respond totally different, or let me put it this way, they have TOTALLY different needs from the intake ports to the exhaust ports. There are several things that they really respond well to, and other modifications that you will just go backwards or at least simply waste your time. What I am saying is they have spoecific areas where porting and valve jobs do a great deal, as well as some other changes. If you dont know where to look for that, then I'd say stay away from them, or have an experienced porter ( somoen who knows Ebrocks) mess with them. ( not even consdiering the camshaft likes and dislikes) .\ This is exactly while you'll see some real turd Ebrock combos, and some exceptional ones, that overachieve. It comes down to the porters knowledge, and the cam combo. I have quite a few Ebrock combos out there and have found this to be true. My experience and RIP Monte Smith Your work is a reflection of yourself, autograph it with quality. WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.

Re: Edelbrock rpm head questions..................... [Re: CompWedgeEngines] #1092042 10/10/11 01:09 PM 10/10/11 01:09 PM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	I have a 1 barrel and a pile of nitrous if it will help.... Mopar Performance

Re: Edelbrock rpm head questions..................... [Re: moparniac] #1092043 10/10/11 01:14 PM 10/10/11 01:14 PM
Joined: Nov 2004 Posts: 3,544 Syracuse,NY CompWedgeEngines master
CompWedgeEngines master Joined: Nov 2004 Posts: 3,544 Syracuse,NY	Maybe you can let him borrow your 3/4 race cam and that extra set of pop ups ?...and throw some " fifties" on the back end with some Purple Hornies?... RIP Monte Smith Your work is a reflection of yourself, autograph it with quality. WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.

Re: Edelbrock rpm head questions..................... [Re: BradH] #1092044 10/10/11 01:18 PM 10/10/11 01:18 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	I hear what you guys are saying and I`m definately not "hacking" away at these things but more less going by the tech archive info and straightened out the head bolt buldge for a smooth transition into the bowl. I`m not asking these questions to see who I can send em to cos that`s not in the bet or Brian would have em now.........just trying to maximize my power and 9.98 ain`t too shabby considering the other issues I had. I WILL go 9.78 if it kills me........... 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: moparniac] #1092045 10/10/11 01:18 PM 10/10/11 01:18 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Quote: I have a 1 barrel and a pile of nitrous if it will help.... No nos..........YET! 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092046 10/10/11 02:17 PM 10/10/11 02:17 PM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	What's the skinny dom? Someone bet you can't get the 78 or what ??? You one of the best working combos on here for what it is IMO ... That's gonna be tough to pull that out! I'd say the best/easiest way to do it for the cash is tow your car to one them low elevation tracks across country somewhere Mopar Performance

Re: Edelbrock rpm head questions..................... [Re: moparniac] #1092047 10/10/11 02:30 PM 10/10/11 02:30 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	I know it`s going to be tough but so am I and I love a challenge. The best track is probably Bakersfield where I went 9.98 so that may be where we end up. Time will tell.......... 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: CompWedgeEngines] #1092048 10/10/11 02:55 PM 10/10/11 02:55 PM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	Quote: Maybe you can let him borrow your 3/4 race cam and that extra set of pop ups ?...and throw some " fifties" on the back end with some Purple Hornies?... I was thinking splitfires and castrol syntec for starters Mopar Performance

Re: Edelbrock rpm head questions..................... [Re: moparniac] #1092049 10/10/11 04:31 PM 10/10/11 04:31 PM
Joined: Aug 2006 Posts: 2,141 junction city oregon V viperblue72 top fuel
viperblue72 top fuel V Joined: Aug 2006 Posts: 2,141 junction city oregon	Can you lighten your car up some? 2 tenths is a lot at your level. Probably another 60 horsepower.

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092050 10/10/11 05:25 PM 10/10/11 05:25 PM
Joined: Oct 2003 Posts: 1,170 Westbury, NY B bumps440 super gas
bumps440 super gas B Joined: Oct 2003 Posts: 1,170 Westbury, NY	Doesnt sound too hard to do. tell me your combination and I bet I can get some out of it. on your video it seems like you short shifted it. I like RPMs and a well tuned system. I bet I have more gear, more compression, more lift.

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092051 10/10/11 08:17 PM 10/10/11 08:17 PM
Joined: Nov 2009 Posts: 2,177 ill D dennismopar73 top fuel
dennismopar73 top fuel D Joined: Nov 2009 Posts: 2,177 ill	thumper ,, a close friend had stock eddies rpm, 452, mp intake, 13-1 comp, 8" t/a 5000 stall , dana 430 geared,31 tall tire, dominator ,on alcohol,3250 # 73 duster, all steel car! racer brown stx 21 car ran high 9.70 low 9.80 on the back bumper! so it can be done without going to big heads and roller stuff and spend alot less money

Re: Edelbrock rpm head questions..................... [Re: dennismopar73] #1092052 10/10/11 08:22 PM 10/10/11 08:22 PM
Joined: Nov 2009 Posts: 2,177 ill D dennismopar73 top fuel
dennismopar73 top fuel D Joined: Nov 2009 Posts: 2,177 ill	there is not enough gain in rpms heads to justify any porting to them the one example i gave is just one there are couple others who run rpm stock, and been low 9 with them with no work at all , so they will run as stock,

Re: Edelbrock rpm head questions..................... [Re: bumps440] #1092053 10/11/11 12:20 AM 10/11/11 12:20 AM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Thankxxxx............my motor`s a 400/470 stroker w/a solid .680-.660 solid roller @ 12.1 comp. I did short shift but also had fuel delivery and charging issues so who knows. I know guys are running mid/high 9`s w/em and I hope to be one of those guys soon. The porting can`t hurt anything and I`d bet it will help considering I left a lot on the table the first time around. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: viperblue72] #1092054 10/11/11 12:23 AM 10/11/11 12:23 AM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Quote: Can you lighten your car up some? 2 tenths is a lot at your level. Probably another 60 horsepower. I probably could by going w/glass doors and deck lid and lexan but it`s a street car first that I race every so often. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092055 10/11/11 11:08 AM 10/11/11 11:08 AM
Joined: May 2004 Posts: 3,210 robin hood country deaks master
deaks master Joined: May 2004 Posts: 3,210 robin hood country	About 40 hp needed, more comp would help that cam, lose some weight. I think you're car runs well, i would like to be where you are. Prosports car was max wedge port, tunnel ram and a bit lighter than yours and his has gone 9.77. Mick 69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36

Re: Edelbrock rpm head questions..................... [Re: deaks] #1092056 10/11/11 11:43 AM 10/11/11 11:43 AM
Joined: Aug 2006 Posts: 2,141 junction city oregon V viperblue72 top fuel
viperblue72 top fuel V Joined: Aug 2006 Posts: 2,141 junction city oregon	A good tunnel ram??? Seems that could gain a few tenths possibly.

Re: Edelbrock rpm head questions..................... [Re: deaks] #1092057 10/11/11 11:44 AM 10/11/11 11:44 AM
Joined: Feb 2005 Posts: 20,160 PA. pittsburghracer "Little"John
pittsburghracer "Little"John Joined: Feb 2005 Posts: 20,160 PA.	Without knowing before and after flow numbers on your heads its hard to know were you stand right now. Same with the intake manifold. You wouldn't believe what is available with a little porting on the intake but to do it the proper way (bolting it to the head on the flow bench) is very time consuming but well worth the effort. It is very common to have a head flowing 300cfm knocked down to 260 or worse because of it. 1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27 Livin and lovin life one day at a time

Re: Edelbrock rpm head questions..................... [Re: deaks] #1092058 10/11/11 11:45 AM 10/11/11 11:45 AM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	Bob was 100lbs heavier and ran the Indy single 4 intake(just sayin) Bob was also 500ci Mopar Performance

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092059 10/11/11 11:56 AM 10/11/11 11:56 AM
Joined: Apr 2007 Posts: 2,826 NY usa 5 540challenger master
540challenger master 5 Joined: Apr 2007 Posts: 2,826 NY usa	Quote: Quote: Can you lighten your car up some? 2 tenths is a lot at your level. Probably another 60 horsepower. I probably could by going w/glass doors and deck lid and lexan but it`s a street car first that I race every so often. What about going with an aftermarket front end to save some weight. My alterkation is great i racked up over 1000 street miles in just 3 months and love it. Not cheap but alot of weight loss and makes working on the car that much easier.

Re: Edelbrock rpm head questions..................... [Re: moparniac] #1092060 10/11/11 11:56 AM 10/11/11 11:56 AM
Joined: May 2004 Posts: 3,210 robin hood country deaks master
deaks master Joined: May 2004 Posts: 3,210 robin hood country	The car before that one, dart sport 451. Mick 69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36

Re: Edelbrock rpm head questions..................... [Re: deaks] #1092061 10/11/11 01:14 PM 10/11/11 01:14 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	More good points..............taking out my second batt. and pass. seat alone would net me about 70lbs. and a lightened ft. end would be awesome but the funds are low along w/work so, I`m trying to go w/what I have. I can have the heads flowed at Pettis and work the intake myself if need be and a t-ram has been on my mind for a while also but that 9.78 needs to be the same combo or all bets are off. Thankxxx.......... 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092062 10/11/11 02:02 PM 10/11/11 02:02 PM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	You don't run radials do you? Mopar Performance

Re: Edelbrock rpm head questions..................... [Re: moparniac] #1092063 10/11/11 02:32 PM 10/11/11 02:32 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	No, I`m running the 29x13.5 qtp`s...........So, no one has any photos or another site I can check out? Last edited by Thumperdart; 10/11/11 02:48 PM. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092064 10/11/11 03:35 PM 10/11/11 03:35 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	Quote: ... other than the tech archive photos, does any one have any otther photos I can check out or another post I can view? Where are the Tech Archive pics? I have some stuff that Dwayne Porter posted years ago on E heads, but don't know if they're the same pics. Here's one (attached)... 6866473-EdelbrockIntakesported.jpg (128 downloads) Last edited by BradH; 10/11/11 03:38 PM.

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092065 10/11/11 03:54 PM 10/11/11 03:54 PM
Joined: May 2005 Posts: 1,030 ohio 6 67mprfan super stock
67mprfan super stock 6 Joined: May 2005 Posts: 1,030 ohio	Quote: that 9.78 needs to be the same combo or all bets are off. Thankxxx.......... When the race ....Good luck 71 demon stock stroke 440/indy ez-1 running 10.10 @ 132.14 mph in the 1/4 and 6.36 @ 107.46 mph in the 1/8 not in the same weekend but It did it then I sold it. 67 Belvedere that worked it's way in the 10's

Re: Edelbrock rpm head questions..................... [Re: BradH] #1092066 10/11/11 04:12 PM 10/11/11 04:12 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Quote: Quote: ... other than the tech archive photos, does any one have any otther photos I can check out or another post I can view? Where are the Tech Archive pics? I have some stuff that Dwayne Porter posted years ago on E heads, but don't know if they're the same pics. Here's one (attached)... Those are the photos I was refering to.........Thankxxx............ 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: 67mprfan] #1092067 10/11/11 04:13 PM 10/11/11 04:13 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Quote: Quote: that 9.78 needs to be the same combo or all bets are off. Thankxxx.......... When the race ....Good luck No race just me gettin a 9.78 slip then lots of `s to follow. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092068 10/11/11 05:48 PM 10/11/11 05:48 PM
Joined: Oct 2003 Posts: 1,170 Westbury, NY B bumps440 super gas
bumps440 super gas B Joined: Oct 2003 Posts: 1,170 Westbury, NY	tell me more about what you have ? street car? 12 to 1? More would help power, but!! what do you run for gas? what ratio rockers? definately would help with more ratio. what gear and RPM at the stripe? what Dia headers and how long and also collectors? dia and length? tuning helps a lot more than most people think. its called volumetric efficiency. when it all gets in its tuned lengths, its like a freight train at the big end and yes a bit of weight out will always help.

Re: Edelbrock rpm head questions..................... [Re: bumps440] #1092069 10/11/11 06:01 PM 10/11/11 06:01 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Quote: tell me more about what you have ? street car? 12 to 1? More would help power, but!! what do you run for gas? what ratio rockers? definately would help with more ratio. what gear and RPM at the stripe? what Dia headers and how long and also collectors? dia and length? tuning helps a lot more than most people think. its called volumetric efficiency. when it all gets in its tuned lengths, its like a freight train at the big end and yes a bit of weight out will always help. Street car 12.1 comp. 50/50 mix of 91/110 trick. 1.5 harland sharp rockers,2" primary tube fenderwell headers and shift bet 7000-7200 average and trap about 6800-7000+. The freshen, better charging and a proper fuel system will get me there OR very close. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092070 10/11/11 06:36 PM 10/11/11 06:36 PM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	dom my buddies SBC is right about the same increments as yours in the 1/8th but he is going 134 and change in the back half and his best is an 82 so far on his new combo(on motor/drag radials)! I think it's gonna be a good challenge for ya and hope ya do it Mopar Performance

Re: Edelbrock rpm head questions..................... [Re: moparniac] #1092071 10/11/11 07:04 PM 10/11/11 07:04 PM
Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH WILD BILL Senior Member of the Junior Dragster Club
WILD BILL Senior Member of the Junior Dragster Club Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH	Here's all the pics I took of when Scott did My Eddy heads They ended up flowing 319.5 @ 600 and 700 lift.

Re: Edelbrock rpm head questions..................... [Re: moparniac] #1092072 10/11/11 07:45 PM 10/11/11 07:45 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Quote: dom my buddies SBC is right about the same increments as yours in the 1/8th but he is going 134 and change in the back half and his best is an 82 so far on his new combo(on motor/drag radials)! I think it's gonna be a good challenge for ya and hope ya do it After my 9.98 I went to Fontana after new valve springs and went a best there of 10.03@ 134+ but still had fuel issues. It will be a challenge and that`s what makes a competator like myself thrive. Thankxxx for the photos Bill..........man, he totally cleaned out the exhaust.... Do you have any port opening and other dimensions Bill? 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092073 10/11/11 08:14 PM 10/11/11 08:14 PM
Joined: Oct 2003 Posts: 1,170 Westbury, NY B bumps440 super gas
bumps440 super gas B Joined: Oct 2003 Posts: 1,170 Westbury, NY	You are right in the ball park for shift points and RPMs for that size motor. I shift at 7000-7200 and trap at 7500 with a 446 ( shows no signs of laying over) more compression would help, but I dont recommed it if you will street it a lot. I would definately go with Harland sharp 1.6s, could net you around 25-30 HP have you experimented with valve lash changes? what carb? What manifold? spacers? 2" is the right header, but I would imagine it is a bit too long being fenderwells. would want 32-33" long with 3.5 collector around 16-18 " YOU are pretty close to maxed out there, but there is ALWAYS more to be found. look at the suggestions and see what you could do.

Re: Edelbrock rpm head questions..................... [Re: bumps440] #1092074 10/11/11 08:20 PM 10/11/11 08:20 PM
Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH WILD BILL Senior Member of the Junior Dragster Club
WILD BILL Senior Member of the Junior Dragster Club Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH	Not off the top of my head. I'll look at my notes when I get home tonight and see if I can dig up any more info

Re: Edelbrock rpm head questions..................... [Re: bumps440] #1092075 10/11/11 08:45 PM 10/11/11 08:45 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Quote: You are right in the ball park for shift points and RPMs for that size motor. I shift at 7000-7200 and trap at 7500 with a 446 ( shows no signs of laying over) more compression would help, but I dont recommed it if you will street it a lot. I would definately go with Harland sharp 1.6s, could net you around 25-30 HP have you experimented with valve lash changes? what carb? What manifold? spacers? 2" is the right header, but I would imagine it is a bit too long being fenderwells. would want 32-33" long with 3.5 collector around 16-18 " YOU are pretty close to maxed out there, but there is ALWAYS more to be found. look at the suggestions and see what you could do. I agree about a better header but not yet. I have tried different lash settings but not at the track. 1050 dommy w/an adapter and a 1/2" wood four hole spacer on top of a Victor intake w/a bit of plenum work. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: WILD BILL] #1092076 10/11/11 08:47 PM 10/11/11 08:47 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Thankxxx Bill..........mostly interested in p-rod pinch width and ex. opening #`s. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092077 10/11/11 09:08 PM 10/11/11 09:08 PM
Joined: Jan 2003 Posts: 5,484 SoCal Brian Hafliger master
Brian Hafliger master Joined: Jan 2003 Posts: 5,484 SoCal	Lower the floor at the pushrod pinch and work it into the short turn...but be carefull or you'll be in H2O! I'll bet there is at least 20HP in your heads if not more from better porting. Another 10HP with a 2.18 valve. Brian Hafliger

Re: Edelbrock rpm head questions..................... [Re: Brian Hafliger] #1092078 10/11/11 09:13 PM 10/11/11 09:13 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Thankxxx Brian.........any photos? You would of got my heads but I`m gonna do everything to win this bet w/just my dumb a$$ only doin the work. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092079 10/11/11 09:55 PM 10/11/11 09:55 PM
Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH WILD BILL Senior Member of the Junior Dragster Club
WILD BILL Senior Member of the Junior Dragster Club Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH	Sorry Dom, I can't find any of my build sheets.

Re: Edelbrock rpm head questions..................... [Re: WILD BILL] #1092080 10/11/11 10:13 PM 10/11/11 10:13 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	No problem........maybe Scott can shoot those #`s to ya! I`m in no hurry and still waiting on my block so I`m leaving no rock unturned on this thing and will milk every bit of power I can find. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092081 10/11/11 11:36 PM 10/11/11 11:36 PM
Joined: Oct 2003 Posts: 1,170 Westbury, NY B bumps440 super gas
bumps440 super gas B Joined: Oct 2003 Posts: 1,170 Westbury, NY	I personally have NEVER had good luck with a 4 hole spacer. I have about 1.5 inches of open spacer on mine.( tarantula) you have enough carb there. so IMO the best bet would be 1.6 rockers. you would most likely gain even if you used 1.6 only on the intake. and tightened up the exhaust lash a bit. try some lash changes at the track. Good luck to you . cant suggest anything else that doesnt involve a lot of money (porting and bigger valves)

Re: Edelbrock rpm head questions..................... [Re: bumps440] #1092082 10/11/11 11:40 PM 10/11/11 11:40 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Thankxxx............the four hole is only a 1/2" and more less there to keep the carb`s guts from falling in the motor but I must say my afr`s sure cleaned up w/it. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: bumps440] #1092083 10/11/11 11:58 PM 10/11/11 11:58 PM
Joined: Feb 2005 Posts: 20,160 PA. pittsburghracer "Little"John
pittsburghracer "Little"John Joined: Feb 2005 Posts: 20,160 PA.	Going with a bigger (Ferrea)intake valve and sizing the throat at 88-90 percent would defiantly increase performance. 8 intake valves would cost about 150.00 on ebay or from one of our members. Do not get greedy on the throat sizing as it will kill the flow. 1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27 Livin and lovin life one day at a time

Re: Edelbrock rpm head questions..................... [Re: pittsburghracer] #1092084 10/12/11 01:03 AM 10/12/11 01:03 AM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Thankxxx.............I may go to bigger intakes but we`ll soon see. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092085 10/12/11 04:57 AM 10/12/11 04:57 AM
Joined: Jul 2004 Posts: 4,384 Worst Weather USA 493_DART master
493_DART master Joined: Jul 2004 Posts: 4,384 Worst Weather USA	dont know if this helps Dom--- my buddy has been 9.2x or so with RPMs . this was a couple years ago but off the top of me head.. 512" 620 lift roller ported Rpm heads 72 Cuda --weight = 2800 or so ?? on race gas / dominator I say try to shave some weight off the car and good luck

Re: Edelbrock rpm head questions..................... [Re: 493_DART] #1092086 10/12/11 11:41 AM 10/12/11 11:41 AM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Man that`s haulin............makes me want to throw in the towel. Not...........after looking at my notes, my car`s right at 3200 w/me and about 10 gallons of gas so 2800lbs would put me REAL close to the mid 9`s depending on what the fuel system, charging problems and the freshen gives me...........we`ll see. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092087 10/12/11 11:42 PM 10/12/11 11:42 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	So, does anyone have a part number for some 2.18 or 2.19 intake valves that are the lengths of the e-head valves? George found some but only in 3/8`s that are the same length. Thankxxx........ 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092088 10/13/11 12:25 AM 10/13/11 12:25 AM
Joined: Feb 2005 Posts: 20,160 PA. pittsburghracer "Little"John
pittsburghracer "Little"John Joined: Feb 2005 Posts: 20,160 PA.	Just did a quick check and I am not sure this would work but check these out. http://www.hughesengines.com/Index/produ...mp;partid=10246 1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27 Livin and lovin life one day at a time

Re: Edelbrock rpm head questions..................... [Re: pittsburghracer] #1092089 10/13/11 12:31 AM 10/13/11 12:31 AM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Thankxxxx John........... 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092090 10/13/11 12:35 AM 10/13/11 12:35 AM
Joined: Feb 2005 Posts: 20,160 PA. pittsburghracer "Little"John
pittsburghracer "Little"John Joined: Feb 2005 Posts: 20,160 PA.	Quote: Thankxxxx John........... Your welcome. 1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27 Livin and lovin life one day at a time

Re: Edelbrock rpm head questions..................... [Re: pittsburghracer] #1092091 10/13/11 10:58 AM 10/13/11 10:58 AM
Joined: Jan 2003 Posts: 25,894 United Socialist States of Ame... T tboomer Too Many Posts
tboomer Too Many Posts T Joined: Jan 2003 Posts: 25,894 United Socialist States of Ame...	Pretty good thread,Thumpman! I will be watching this as I may also have to use what I already have!! Need your rear end checked out? Contact Grizzly!!

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092092 10/13/11 12:45 PM 10/13/11 12:45 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	Have you tried locating any pics of MCH's CNC-ported Edelbrocks or Stealth heads to get a feel for what Jeff does? Just a thought...

Re: Edelbrock rpm head questions..................... [Re: pittsburghracer] #1092093 10/13/11 12:55 PM 10/13/11 12:55 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	Quote: Just did a quick check and I am not sure this would work but check these out. http://www.hughesengines.com/Index/produ...mp;partid=10246 That'll work, but it's not as nice a valve as the original stuff that Edelbrock uses.

Re: Edelbrock rpm head questions..................... [Re: BradH] #1092094 10/13/11 01:18 PM 10/13/11 01:18 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Quote: Have you tried locating any pics of MCH's CNC-ported Edelbrocks or Stealth heads to get a feel for what Jeff does? Just a thought... No I havn`t but I`ll look em up. I`m going to a 2.19 intake valve and the necessary bowl work to take advantage of it so, we`ll soon see. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092095 10/13/11 01:46 PM 10/13/11 01:46 PM
Joined: Feb 2007 Posts: 347 north west, IN L larry890 enthusiast
larry890 enthusiast L Joined: Feb 2007 Posts: 347 north west, IN	my 400-451 w/rpms have been 9.76@135.6 in 3640lbs b-body. i just mch cnc port, then opened the ports to mw and added a indy intake.

Re: Edelbrock rpm head questions..................... [Re: Thumperdart] #1092096 10/13/11 01:54 PM 10/13/11 01:54 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	Quote: Quote: Have you tried locating any pics of MCH's CNC-ported Edelbrocks or Stealth heads to get a feel for what Jeff does? Just a thought... No I havn`t but I`ll look em up. I`m going to a 2.19 intake valve and the necessary bowl work to take advantage of it so, we`ll soon see. FWIW, going to a bigger valve w/o the rest of the port being able to support it won't show much gains. I did the 2.19" upgrade on a set of nicely ported OEM iron castings flowing 270+ and it only picked up maybe 3-4 cfm in the mid lifts w/o any peak gains to speak of.

Re: Edelbrock rpm head questions..................... [Re: larry890] #1092097 10/13/11 02:12 PM 10/13/11 02:12 PM
Joined: May 2004 Posts: 3,210 robin hood country deaks master
deaks master Joined: May 2004 Posts: 3,210 robin hood country	Quote: my 400-451 w/rpms have been [Email]9.76@135.6[/Email] in 3640lbs b-body. i just mch cnc port, then opened the ports to mw and added a indy intake. What extra gains did you get from the max wedge port and intake. Mick 69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36

Re: Edelbrock rpm head questions..................... [Re: BradH] #1092098 10/13/11 02:19 PM 10/13/11 02:19 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	Quote: Have you tried locating any pics of MCH's CNC-ported Edelbrocks or Stealth heads to get a feel for what Jeff does? Just a thought... Looky at what I found:

Re: Edelbrock rpm head questions..................... [Re: deaks] #1092099 10/13/11 02:33 PM 10/13/11 02:33 PM
Joined: Feb 2007 Posts: 347 north west, IN L larry890 enthusiast
larry890 enthusiast L Joined: Feb 2007 Posts: 347 north west, IN	The standard port intake didnt have enough volume so instead of porting a standard intake, i bought the indy w/mw ports and opened the heads up. I didnt flow any of it on a bench. I switched to a roller cam it was part of the upgrade.

Re: Edelbrock rpm head questions..................... [Re: deaks] #1092100 10/13/11 02:40 PM 10/13/11 02:40 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart OP I Live Here
Thumperdart OP I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Nice photo............thankxxx. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

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