EPP

iTrader: (22)

I am truly amazed that we are seeing 16 psi with a 402 cid engine! We're not quite done tuning yet, but it looks like 16 psi is all we're going to make, as boost is leveling off. 757 rwhp is not shabby on a Mustang chassis dyno, this would be approx 800 rwhp on a Dynojet. I have to look this morning to see what heads are on this engine. We'll finish tuning this morning and I'll post the dyno results.
Here is a link to this Trans-Am. Bob http://www.exoticperformanceplus.com...Car.php?car=42

Z06PSI

iTrader: (33)

Nice.....

2001WS6Vert

And everybody seems to think you gotta have a turbo to make big power, hmmm.

99SS-T

iTrader: (5)

Well u certainly dont need a turbo to make big power but at 16 psi with a turbo i would expect more like 850 hp. Supers are just less eficent at teh psi to power ratio since they need to be belt driven.


John

Blownramair

What belt combo you you runnin? SDCE?

ty_ty13

iTrader: (42)

what heads were used in this build up.... and what size crank pulley and blower pulley did you use.... and do you keep these in stock?

EPP

iTrader: (22)

Nope, stock with a larger crank pulley that we had made. Bob

WAHUSKER

iTrader: (4)

Damn, 16 psi on a 402?! I was just gonna ask what the pulley sizes are. Care to share Bob?

Oh, NICE NUMBERS btw

EPP

iTrader: (22)

Hi John, you're probably right, although the ATI ProCharger system is usually a lot easier to install than a turbo. Bob

ty_ty13

iTrader: (42)

still curious about my above question.

Thanks,

Tyler

EPP

iTrader: (22)

Thanks! The crank pulley is .78" larger than stock, and we have a 3.70" pulley on the head unit. Bob

EPP

iTrader: (22)

Hi Tyler, this has the SLP head and cam package, pn# 12411. The engine was already installed prior to us working on it, which is why I didn't have the engine info sooner. Bob

ty_ty13

iTrader: (42)

ok... nice.. i hope i didnt sound mean i just wanted to make sure you didnt accidentally over-look or miss my post.

Thanks

Tyler

TS6

iTrader: (41)

Was that on 93 octane?

Nice numbers BTW, I made the exact same with my D1SC and a 408.

EPP

iTrader: (22)

Not a problem.


TS6 Was that on 93 octane? Yes indeed, with no octane booster. Bob

TS6

iTrader: (41)

I wonder what I would make at 16 psi? I'm at 14 now. I might just do the inlet hat mod and see what boost that gets me, I'm still on the stock ATI hat and filter. Not that the car isn't already retarded.......

lock down

dam that a nice write up of everything you did to the car. Great numbers by the way

KissMySSo1

iTrader: (2)

damn i wonder what my little 346 would make at 16 psi. my 12 psi makes about 875. hahaha i can't wait for my race gas tune to go in lol

2002/Black/SS

iTrader: (3)

as a side point how much would u guys want for one of those little turn down after his E-cutout, i need one..... got a good price for me?

Jake@EPP

Depends on what your looking to get done. If its a simple peice like that it wouldnt be much. Pm me or bob for details.