When my car is done it will have the following components in it, just wondering if 400rwhp is possible or what the realistic expectation of this combination should be and should this setup get me into the low 12's? Car is a 1997 Camaro SS LT1 M6.

LE2 cylinder heads (flow approx 270/190 w/2.00 intake and 1.55 exhaust valves) installed with thinner Impala SS head gaskets (.029)
compression should be around 11.3:1
XE503 cam (224/230 dur. @ .050, .537/.544 lift on 1.6 rockers, 112lsa)
1.6 GMPP roller rockers
SLP short tube headers
Random Technologies dual cat high flow y-pipe
SLP 2OTL catback
52mm Throttle body
30# SVO injectors
OBD1 conversion with tuning from Bryan @ PCMforless
SLP Underdrive pulley
1LE intake elbow
Hardened Pushrods and GM Extreme Duty Timing Set
160 thermostat
Factory air box ducted through hood with high flow air filter
SLP lightweight clutch and flywheel
1LE aluminum driveshaft
4.10 gears with Zexel Torsen Differential
Hurst shifter
Boxed lower control arms with relocation brackets and boxed panhard bar
Edelbrock Torque Arm
Nitto 555R P315/35/r17 tires on rear


Car should be complete by early to mid October and I will post up actual results as soon as I get on a dyno and hit the track.

 

with bigger than that cam yes I think so..

 

Yes im thinking that 370 or so might be more realistic. One guy on here made 37x with a xe230/236 cam and le2 heads. But peak hp isnt all that relevant.

As for low 12s that is possible with boltons, weight reduction, traction and a smaller cam like you've got.

 

Yeah, that cam is too small. That is a very similar setup to mine and I put down 380.

EDIT: You are gunna need to ditch the shortys. The more power you make the more they are gunna hold you back, you are probably also gunna need a dyno tune... Im gussing 360ish

 

You'll have to do a TON of tweaking and testing parts to see what works best, but you could get close. The shorties gotta go though, and I'd opt for a better flowing cat-back and a single cat conversion for the headers/y-pipe too.

FWIW, I made 375/363 with that cam through ASM headers, Random Tech Cat, and Random Tech Cat-Back, NO CUTOUT. It needed a bit more tuning and it would have most likely seen 380. I was going to do a 1.7 rocker swap and see what that did, but ended up with a new motor and different cam before I tried.

One thing to consider for you would be a swap to 1.7 ratio rockers, as the relatively low lift of the 224/230 could quite possibly see a halfway decent gain by getting the lift from .536/.544 to the mid .570's.

 

My guess would be no. A larger cam and some long tubes might be required. An electric W/P and a cut-out would help also.

 

I too believe a bigger cam will be necessary to hit the 400rwhp mark. Is 400 important? That combo looks pretty nice and that cam will not be hard on the valvetrain. Plus, if you live in a strict emissions state, that should pass inspection with ease. Even 370rwhp with that combo is nothing to sneeze at...the torque curve would be generous and flat.

 

Go with a bigger cam, a friend of mine with a cc306 and LE1 heads put down 400rwhp. A 58mm tb couldn't hurt. Just make sure you have someone tune the setup, base tunes leave alot on the table.

 

Actually that cam will not be really easy on parts.... the velocities and accelerations have a bunch to do with it... basically the dynamics that the lobe itself inflict on the parts.

I know this is coming from me, but why wouldn't you just run a LE cam if you want something to work with his heads?

Bret

 

Agreed, but with the correctly matched valvetrain components, it should live a while without too much trouble....potentially a lot longer than others who have more aggressive set ups who've hit the 400rwhp mark. There are other cams that beat the crap out of the valvetrain much worse...

 

Sorry, not trying to hijack but which heads flow more the LE2 cylinder heads or the AFR 190 heads?

 

Off course LE2 heads..

 

Not much, the only thing those lobes don't do is give you a bunch of lift. The rest of what they do is VERY hard on the valvetrain. They are really aggressive in the ramp and over the nose, this makes it harder for you to control the valve, which in turn causes things to have more unwanted motions with the valvetrain... hence they ARE HARDER on parts. I'd rather have more lift and some tamer lobes and the setup would live much longer....

You could have a setup that is easier on the parts and make more HP without too much trouble. Kinda why I suggested the LE cams in the first place.

Then again what do I know?

Bret

 

Not much, just how to make a hell of a nice driving, torquey, powerful cam.