I have a95 camaro with a stroker 396 procharger d1 with stock heads ported.
It made 530 hp and same tq to wheels,at about 11.5 lbs boost, but i would like to get about 650 to wheels,i think the heads are holding her back,which heads are best.
Thank you all for your help Clary

 

From what I've heard on here and elsewhere, stock heads with a really good port job don't perform much different than AFR's best head when you have boost pushing the air through them. I would think that in terms of cost to hp gain, a meth. kit would be much better. Do you have an auto or man. transmission?

 

There might be something else going on-

My 94 made 476 rwhp- that was with a little p600b, stock "cleaned up" heads on the stock short block.

Granted- every dyno is different since there is no real way to calibrate one to another, but I would think that your numbers should be a little higher considering your setup.

What you running for cam, exhaust etc...The right cam in a blown car can make all the difference.

 

Need more info on your car and engine. Auto/Manual, wheels/tires, RPM, cam, injector, exhaust, etc.

 

The car is a 6 speed,cam is a lunati 227 int. 234 ex. at .050, LSA 112. comp. promags 1.6 on int,1.5 on ex. injectors are 75 lbs hr low ohms with versa fueller.
The car has stainless long tubes 1 3/4 prim. 3 inch out, with mega flow system with no cats.
Has snow meth. kit, 50/50 mix. Full power on at 5500 rpm
Holds to 6150, Full tq @ 4450, holds to 5500
Car doesnot misss or breakdown, pulls like crazy. Has dynojet wideband, runs 11.8 afr up top. Has Nick Agostino ported heads with 2.00 int. and 1.57 ex, 52mm throttle body.Has aluminum driveshaft,Fidanza flywheel.
Total timming 34degrees. Wheels are z06, 10.5x18 all around, Tires are 285x35x18 all around, with the powerdyne ,with the racer rebuild and better impeller from Carl Faucette the car put down 484 rwhp and 493rwtq. at about 7psi, then internal belt broke, they have better belt now.
I know the cam is not a blower cam,and the heads from Nick, then you got to think, its the heads and cam.
Loyd Elliot told the Agostino heads are not very good. What heads should I get . I know I need a better cam.
Your help is needed.
Thanks

 

What you have sounds like it should be putting down bigger numbers. I think something else is wrong here.... Have you taken it to the track, or is it a street car that you are trying to push big dyno numbers out of? I would like to know what E.T. it's doing. My last motor dyno'd 348hp, but the car ran a 12.3 1/4 mile. Procharged94Lt1 is right regarding the difference in dyno equipment.

 

I think the heads would be holding it back more than anything. They're probably choking that motor/blower combo off more than anything. Sending the heads to Lloyd (or a new set of castings) would probably help quite a bit, but going with an aftermarket casting would most likely do wonders. I doubt the cam is hurting you very much....it's a pretty mild cam based on the specs you gave out. I would bump the exhaust rockers up to a 1.6 also though. Just my $.02

 

Bret the guy who does the tuning says it,s the heads,it can,t get any more air through.The car has never been to the track just a fun street car,and the stock rear would break.
Thank you for your help.

 

How does the dyno chart look? If it starts puttering out up top, that is a sure sign that your setup wants more than the heads will support.

Looking at your setup, I can openly say I agree with Fastbird. Your heads are definatly holding you back. Boost is a measurement of ristriction, so the more restrictive the more boost. However, that will only go so far before your power level is now restricted to your flow.

I have fully ported AFR 180 heads on my setup. They are great heads, but I know they are holding me back a good 75-90 RWHP from what a set of AFR 225's would do with the same port job of my little 180's.

AFR 225's would be the best. But you can get some amazing numbers out of a large set of TFS heads, or even going with some large Dart heads. Porting is important as well.

With the same setup and a good set of larger aftermarket ported heads, you can easily make the power level you are looking for. The D1 kit (assuming its a D1 and not a D1SC) can make 18#'s no problem if it is maxed out. You may find some more power there as well with a different set of pullies. In either case, even if you had more boost available to make out of the blower, your heads are still choking your power.

 

Sorry guys for not posting back sooner,computer was down for a few days.
Call 911 the blower is adisc 1400 cfm 3.70 pulley,12 rib twin intercooler.
The car feels like it,s still pulling a past 6000 rpm but i shift at 6000.
First and second is a total waste even granny shifting.
Anything i got from Nick Agostino was never any good so the heads and cam have to go.
I,al give Loyd Elloit a call to see what he thinks it will take to make this power.
Ithank you guys for all your help with this lack of power,and your right it,s the heads and cam more so the heads.
Have a good evening guys.

 

I have a cam that is far from boost friendly, but the power curve is perfect, and the sound it gives at idle is enough to make LSX guys drool. Get the cam you want for the power curve you want. Or if you want every las bit of boost you can get, then you can get one cut for the blower.

The point I am trying to make here is that the heads are where you will make the difference with your issue. Not so much the cam (but it does help). Just get large heads with a good port job. That will be the drug you need for your fix

 

http://www.vimeo.com/9966979

 

Call 911 your right at that,it,s the heads the big bottle neck, comp. is 8.4 to 1,could be raised another half point or so.
Thank you very much for your help,this power thing is realy a sickness.

 

I would go with a set of LE3's from Lloyd Elliot or TFS 215's from Advanced and one of their cams. I don't remember seeing if your intake is ported. If not have that done by Lloyd or Phil at the same time the heads are done. They are both great guy's and will bend over backwards to help you before they have your money. Give them a call they will hook you up.

 

Bad *** dude!! I can't wait to get mine cranked up this week!!