How much HP for this combo?

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Sep 25, 2004 | 01:33 PM
  #1  
Not desktop dyno sims. I've got DD but I would like some real world estimations based on people with similar setups. ET's and trap speeds would be better than a HP estimate as thats what truely matters in the end.

In a full weight GTA, about 3,650lbs race weight including me.

350, bored .030" over.
Ported/Siamesed Plenum, roughly 1.66" diameter.
Arizona Speed & Marine Semi-Siamesed runners. 1.66" extruded aluminum.
Port matched base, cleaned it up as much as I could with a 3" shank, so I wasn't able to go very deep.
Pocket ported L98's, standard 1.94/1.5" valves. 3 angle valve job.
Lingenfelter roller cam. 211/219 duration @ .050", .500"/.525" lift, 112* lobe sep, 109* centerline.
Hooker 2055 headers
No cat-converter
full 3" mandrel bent exhaust with a Flowmaster 80 muffler (yuck).
Needs a tune yet, but it has 24# SVO injectors, so I shouldn't
have fueling problems.
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The transmission is rebuilt with a shift kit, vette servo, .500" boost valve and a few goodies. 2,200rpm stall. Stock suspension, street tires. Stock 3.27's in the 9bolt.

What do you guy's think this will run in the real world. Anyone running a similar setup as me? Desktop Dyno says 330hp at the crank, but that seems WAY too high to me. Some of the setup's I've seen that were similar with stock heads put about 250hp at the wheels. Think thats about right with maybe a little more because my heads are ported?
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Sep 25, 2004 | 07:57 PM
  #2  
Anywhere between low to high 13's depending on how well the car hooks.
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Sep 25, 2004 | 08:04 PM
  #3  
ive seen a trans am with same mods except he had a 268xe hyd.cam in his made 225rwhp 330tq out of tune,jump right off the air/feul charts to rich at wot. it runs low 14s on street tires 5 speed car with a worn posi. i say you will be in the 13s for sure about 100mph
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Sep 25, 2004 | 10:35 PM
  #4  
Re: How much HP for this combo?
Quote:
Originally posted by Thirdgen89GTA
Desktop Dyno says 330hp at the crank, but that seems WAY too high to me. Some of the setup's I've seen that were similar with stock heads put about 250hp at the wheels. Think thats about right with maybe a little more because my heads are ported?
Figuring an 18% drivetrain loss, 250 hp at the wheels is roughly 295 hp at the crank. So, ported heads (depending on the job, I guess) could net you another 20-30 hp, putting you very close to what DD guesstimates.
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Sep 25, 2004 | 11:08 PM
  #5  
I've got mods similar to yours. Mods and dyno in the sig...

My cam is a 210/220 duration at 0.050" with 0.480" lift on intake and exhaust.
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Sep 28, 2004 | 05:27 PM
  #6  
hook that puppy up, and i dont think mid 13s should be a problem....tom
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