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Is this rwhp figure realistic?

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Old 07-19-2006, 11:27 AM
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Question Is this rwhp figure realistic?

What do you guys think I should have for rwhp roughly?
I saw a dyno from the previous owner of what he said kooks 1 3/4" headers and ls6 intake and map tuned. It said 358 rwhp for peak.

This is the question, he said with all the other mods in my sig. it dynoed at 464 rwhp with race gas. It has 26 deg. timing he said. Is this realistic with my mods? I took it to the track about amonth ago and ran a 12.8 @113.35 with 2.2-2.3 60ft times. Which is way low for 464 rwhp but soon as i left the track my car would bearly stay in gear...spec stage 3 was completely shot..so i am assuming that:
1.clutch was slipping,
2.also it was hot and i ran 92 octane so i think it was retarding timing
Would this account for those numbers?

Let me know what you guys think.
Thanks

Currently almost done with ls7 clutch install!
Old 07-19-2006, 11:29 AM
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Oops also i was going to ask..what are good cfm numbers on heads at .600 lift. He said it flowed like 320 cfm! is that in the ballpark for really good flowing heads or way too high? THat is better than afr 205 i think.
The heads are ported with bigger valves...size i dunno being i have not seen parts list.
Old 07-19-2006, 03:01 PM
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any one?"
or has this type of question been way over asked haha?
Old 07-19-2006, 03:10 PM
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numbers in sig with the torquer and a FAST 90/90 so i dont see how he made such high numbers...prolly cause the race gas
Old 07-19-2006, 03:14 PM
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I would be guessing 440 rwhp and 385 rwtq. Add an UD pully and Meziere EWP and pick up another 15 + rwhp !!! Check out my sig. I did 473 rwhp 431 rwtq on a 70* April evening with just under 20% humidity. Great conditions. Made that pull with a dirty air filter choking the VaraRam intake system. Might've squeezed a few more with a fresh filter. Hoping that the 90/90 setup with a good retune in a year or so will push her to 490 rwhp + !!!
Old 07-19-2006, 03:17 PM
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yea my numbers were in 91 degree weather with 50% humidity
Old 07-19-2006, 03:21 PM
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Thanks guys, interesting that you have it map tuned as well. I am new to this, so did u every dyno it to see the increase of power from the fast combo? Also how much did the 4.10s help?
I am getting gears when i can afford a 9"...4.30's i am thinking.
I was wondering if u guys thought the underdrive pulley would be worth it? I think so...
I just dont want to spend $$$ on the 90/90 altought i think it would help 20rwhp due to the maf elimination.

U guys have some mean cars...what they run in the 1/4 ?mph as well...
Old 07-19-2006, 03:22 PM
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how big is the torquer cam? think mine is like close to .600 lift, is it really bigger cam than mine?
Old 07-19-2006, 03:23 PM
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232/234 595 598 112
Old 07-19-2006, 03:31 PM
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Pretty similar cam then...i bet your numbers would be much improved with cool air. Yes im sure he tuned it when it was cool and the gas helped due to increased ability to advance timing.

Have you both ran your car in the 1/4?
I expected close to 120mph traps and 113 blew my mind.
Old 07-19-2006, 03:44 PM
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no track times YET




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