Krazy98Z28

iTrader: (12)

I got CNC Heads 2.08/1.60,ARE 224/224 114.581/581 cam, LS6 intake,SLP longtubes with ORP,no cats. Now i have a cutout but the dyno shop didnt want me to make alot of noise so we dynoed through the stock exhaust. Also everything else is stock.And
Ed Wright tuning

374.1hp and 362tq

I wasnt too impressed with these numbers what needs to be done to bring these up. Yes everything else is stock including the airlid. This is with an M6. The car dynoed 302 bone stock so 72 rwhp from all that. Help me out guys.

Marco

00blkws6

A Pace sl6 calibrated de-screened MAF, ported/polished or Katech throttle body, any lid/inducion will help also. Next time open that cuout up also. That would have put you around 390 by itself possibly.
I would think around 420 would be attainable without much monetary output.
Jay

XLR8NSS

iTrader: (4)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 00blkws6:
<strong>A Pace sl6 calibrated de-screened MAF, ported/polished or Katech throttle body, any lid/inducion will help also. Next time open that cuout up also. That would have put you around 390 by itself possibly.
I would think around 420 would be attainable without much monetary output.
Jay</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">You covered it pretty good. <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" /> <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Ebbsnflows

iTrader: (15)

I'm betting that just adding a Lid ALONE, will give you 20 rwhp. You are absolutely suffocating your engine with a stock lid. At a recent dyno day, we did some experimenting with an aftermarket lid vs Stock Lid. On a bolt-on car the Aftermarket lid was worth 10-12 hp (nothing unusual at all)....however on a Cam'd car (stock heads), the lid was worth 21 hp over the stocker. Obviously the more power the motor is capable of making, the more significant the gain will be.

98SS#2018

iTrader: (-1)

Wait a sec.. the dyno shop didn't want you to be loud? Do these people typically dyno stock minivans or real cars where there owners want them to be dynoed?

Jason

MY99TAWS6

iTrader: (3)

Agree with above..lid,ported tb...underdrive..
and tuning..ls1 edit or maf translator..those 2.08 intake valves are also huge for stock displacement..you need a big bore 422 now guy!!!
Also I have a theory that some guys are running out of injectors..I have been pluggin the formulas using .50 efficiency and it looks like we are hitting 100% duty cycles on the stock injectors..and I thought that was bad..???

VINCE

iTrader: (1)

Are you sure these heads are not from Flow Technics.. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Krazy98Z28

iTrader: (12)

It was 8:30 in the mourning so out of respect for the neighbors he didn't want it so loud. I guess I am gonna buy a lid.Like soon. I also noticed my ZO6 clutch cant handle the new power.If i shift quickly at high rpm the pedal sticks to the floor. Looks like I am getting in on the cartek clutch package.

Marco

Krazy98Z28

iTrader: (12)

Everyone says the valves are too big. What cam would work with these heads I feel the ARE cam is too mild. Or is the CNC stage 2 heads no good. But i honestly think because it went through the stock exhaust plus no lid or throttle body thats whats killing me. But does anyone else have high numbers with a different cam.

marco

CHRISPY

Change the lid, run a ported throttle body, UD pulley and get some real tuning (ie LS1 edit) and you will be over 400RWHP no problem.
Chris

99MONGOOSE

If I had a shop with a dyno and was taking appointments at 8:30am then noise shouldn't be a concern. If I were you they would be letting me re-test for free. you paid good money to have your car dynoed and you didn't even get a true reading because they didn't want to make a lot of noise? I would look for another dyno shop then. Above posts covered it well, lid, MAF, TB and maybe a RAM AIR kit, you will hit 400 no problem.

DERTY

I have that EXACT SAME SETUP and I can put out 403RWHP and 372RWTQ. You are missing the lid, ported throttle body, and possibly some fuel issues. With 1 3/4 primaries I would expect your torque to be higher than mine. As far as my exhaust, major difference is 1 7/8 Grots with catted Y and Corsa exhaust.

Also, check your A/F and fuel injectors after you do all this. If you AF is too high you're also starving the motor. Ed Wright tuning is great, but doesn't account for the fact that your stock injectors may not be adequate enough. 2002 Cars can have 24# injectors (mine did, that's how I know) which are too small for this. When we found out that we were starving on fuel my car only put down 377RWHP. Upping the injectors, porting the TB and changing the programming and voila' 403RWHP.

And as for a dyno shop that doesn't want to be loud, go elsewhere and leave their knitting to themselves. I agree that you need to get everything situated through your exhaust first, but you should be able to see what happens when you open that cutout. If it goes way lean and you never had a idea how lean it would go off a dyno, you're potentially SCREWED on track day.

<small>[ August 22, 2002, 11:34 AM: Message edited by: derty ]</small>