ratgun

wanting to build pulling truck. need a motor with good torque. parts i have so far are lq9 short block 317 heads and trailblazer ss intake. I want to use all of parts listed. what comp. should i run for pump gas 93 octane. or should i run e85 with higher comp.



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Tainted

iTrader: (9)

Theres a ton of factors to consider. For a cam od very highly suggest having someone like Pat G custom spec one for you. Have the heads ported and milled, supporting valvetrain, longtube headers, free flowing exhaust.

backdraft408

what hp or tq are you looking to get?

ratgun

it's goin to be a stock class so has to have manifolds. not sure on hp and torque budget build maybe 500 ish ?



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Tainted

iTrader: (9)

Youre not gonna get that on a budget, and on stock manifolds forget it.

For 500rwtq youre going to need either forced induction or a built na motor

LS1T56FTW

iTrader: (3)

^ I don't follow? If my mild build 346 cube LS motor can make 419 torque, I don't see how a 408 could not make 500 torque (with the proper setup obviously).

garygnu

talk to Pred-Z for a torque cam.

Sales@Tick

iTrader: (3)

That's a tall order on stock manifolds no matter if you had the collective cam timing prowess of Pat G, Ed Curtis, Brian Tooley, Geoff Skinner or Harvey Crane himself specifying the profile.

ratgun

if not 500 what do u think? I was going to port manifolds out my self . what about plus 5 dome pistons with 317 heads ?



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wildcamaro

iTrader: (15)

Get the compression up by milling the heads, get a good port job on the 317s. Port match the manifolds bc there is plenty u can remove. If you can use any stock ex manifold I suggest c5 z06 corvette manifolds, I saw a dyno test where they matched some shorty headers. I have a set I would sell you cheap if your interested. Def keep that trailblazer ss intake for max torque.

ratgun

pm sent wildcamaro


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ratgun

u guess the ? is stock strock or 408 ?


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Sales@Tick

iTrader: (3)

Go with a 4" stroke no doubt.

You're going to need something way out in left field on the cam timing.

I'm not even going to attempt to try and throw a profile out there because it will be followed by 5 posts asking why does it look like that and that will never work. If you're interested in this profile shoot me a PM, E-mail or call the shop tomorrow from 8-5 EST.