i got my car dynoed and only got 261rwhp at 4800 and 332.1tq at 3600 ithought i should be over 300 rwhp heres my combo ive got the compucam 2032 214/220 duration 496 510 lift with 1.65 roller rockers AFR 195cc heads with compition port work msd 6al uinderdrive pulleys ported plenum removed maf screens edelbrock base and runners 1 3/4 long tube headers 4" mufflex system afpr ed wrights fast chip what should i change? cam? what cam u recommend? i want 300+ rwhp i thought i had it im open to any suggestions

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1992 camaro RS w/ 350tpi
195cc AFR heads with compition port work milled to 58cc
1 3/4 hooker long tube headers
4" mufflex system
custom ED Wright chip
eddelbroc intake base and runners and much more
new best ET 13.5 @104.66 on stock heads
no times with new afr heads hoping for 12's on motor
http://www.nav.to/badass355tpi

 

I think you're seeing the long tube runner (LTR) setup biting you in the *** . I'd look into either a SuperRam or MiniRam intake setup, although that is some cash...

Check out this thread from the Aftermarket board. Traxion did some back to back testing of the LTR TPI setup vs a MiniRam setup. It made the kind of changes you want...
https://www.thirdgen.org/messgboard/...ML/000986.html

This graph tells the whole story in a nutshell, two Miniram graphs w/ a LTR graph on there as well:




Someone also had some SuperRam dyno graphs that you may be able to find w/ some searching of the archives. It should make a little more torque than the short runnered MiniRam setup but still provide alot better upper RPM improvement over the LTR tpi setup.

You might also want to step up to the LT4 HOT cam (used in the dyno comparo in post above) if you go w/ a better intake, although your current cam isn't that much smaller...

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Ray87Z
-Vortec headed 350.
86 IROC w/ a cammed 305 TPI.
Formerly Ray86IROC.
www.inter-scape.com/Ray


[This message has been edited by Ray87Z (edited May 07, 2001).]

 

a good cam for your combo would be hr-284-2s-12-ig (crane cam). it is 222 and 230 at .050 with a 112 lobe seperation. lift is .509 and .528 with 1.5 ratio rockers. the 1.65's ar great if all your building is torque, otherwise they are excessive for making hp.

 

I really don't think the LTR setup is causing that. A modified TPI setup can flow really good and has some advantages the others.

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89 RS

Looking For:
87 IROC-Z28 350 TPI

[This message has been edited by IROCZTWENTYGR8 (edited May 07, 2001).]

 

ive got 24# injectors id really like to see what i could get out of the ltr set up but if i knew the mini ram or super ram would take care of this i would get one im jus trying to get all the input before i drop anther $1000+ on the street i win races all the time thats what surprised me when i saw the #s i was running 13.5@104.66 last year with stock heads im bafled