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strange timing question

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Old 12-12-2007, 06:35 PM
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Default strange timing question

lets assume you have a blown 408 with 8.7-8.8 : 1 compression and a healthy cam and everything was running great.
now lets assume you removed the blower and wanted to run the engine N/A and squeeze every last bit of hp out of it , how much timing can you put to that motor? should you start at 30 deg and work your way up?or did anyone try something different??

sorry for the strange question , but it involves a money race , and i need to win
Old 12-13-2007, 08:25 AM
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anyone ??
Old 12-13-2007, 09:19 AM
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Why would you take your blower off and run for money Sam? I have never seen even a low compression LS1 make more power by going much above ~30 degs for the most part. Of course it depends on your cam, etc.
Old 12-13-2007, 01:50 PM
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I would start at 32 but not go beyond 36 with these modern heads.

Jim
Old 12-13-2007, 02:14 PM
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I ran my 8.3:1 402 na for a while before the turbo install. I dynoed it na and it made max power (453 rwhp) at 27 deg timing.
Old 12-14-2007, 07:53 AM
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hey nick! how are you doing ??
the blower is still on the camaro ( and so is the 427 motor ) , i took the old 408 out of the camaro and dropped it into a notch back mustang and decided to spray it . i absoloutly love it on the direct pot system, but just to shut some bigshot ricer up over here , i want to run him N/A .

thanks for the advice guys, going out tonight to do some "testing" , will see how it does
Old 12-14-2007, 07:56 AM
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incase you are wondering how well it works....:

http://www.youtube.com/watch?v=XpQTJVAsugw

( spun in first , peddeled in second, opened the can of whoopass in 3rd )
Old 12-15-2007, 03:04 PM
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well , for some reason my butt dyno says it pulls pretty darn good at 34 deg timing it had a bit of knock (1 deg) at 4100 rpm, which i expected since i had the timing table flat in that region ( should pull a few degrees from 4000 to 4500 i guess). i might take it to as far as 36 deg and see what it does .

on to race gas tunning !
Old 12-17-2007, 10:31 AM
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Haha, nice run Sam! I am doing well, just got done actually with the fuel system for the Camaro. yea yea, I know it only took like 2 years haha. Finally had it back on the rollers on saturday just for some quick numbers, not for tuning. Made right around 800 rwhp and torque on 15.5 psi. Th400 time though.
Old 12-18-2007, 02:49 AM
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nice numbers!!! ( about time! )

i was really considering putting a turbo on the stang ( since i had the old camaro intercooler and some of the old camaro fule stuff, and a friend lended me his turbo- big one , not sure which ), where i would build the system on the stand , then duplicate it on his
that didn't work out ( i got lazy) and i went with the N2O system




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