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Old 07-30-2003, 02:16 AM   #1
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ok so im tryin to create as close to a stock profile as possible for the 3800 but i was wondering if some of you more knowedgeable folk could point out any flaws.... thanks

and edit yes i nkow its under a chevy 3.8 but as far as i could tell they were the same

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Old 07-30-2003, 12:23 PM   #2
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should be running on a mix of alcohol and instead of gasoline right?
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Old 07-30-2003, 01:13 PM   #3
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wel i need to know if i have the right intake CFM and such
and valve size and such
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Old 07-30-2003, 03:09 PM   #4
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Well I can tell you that the compression ratio is 9.5:1 not 9.4:1.
The cam doesn't seem to be correct from the information I have about it, although I wouldn't doubt it if my info was wrong. The cam is .4128 valve lift at the intake and exhaust valves, which is .258 cam lift. It is also 182 degrees @ .050 intake, and 192 degrees @ .050 exhaust. Everything else seems to be correct about it. The timing advance at WOT would be around 30 on a N/A 3800, so you may want to change that also. But, it looks to be pretty accurate the way it is, so you may want to just leave it alone, the things that a wrong that I can see are so minor it isn't even worth changing.

BTW...Where did you get that program...it looks pretty awesome.
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Old 07-30-2003, 04:14 PM   #5
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How do you account for a Supercharger in that program?
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Old 07-30-2003, 04:35 PM   #6
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Quote:
Originally Posted by 95BonnevilleSESC
How do you account for a Supercharger in that program?
the m90 isnt in that program unfortunatly......
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Old 07-30-2003, 04:40 PM   #7
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I am M62.
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Old 07-30-2003, 04:42 PM   #8
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Quote:
Originally Posted by 95BonnevilleSESC
I am M62.
hmm not in there either no eatons :(

say you wouldnt happen to know the size of the stock throttle body would you?
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Old 07-30-2003, 04:46 PM   #9
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It depends on the year and induction. I think mine is 70mm, but '92-93 L67 is smaller (65mm?) I really don't know about the NA engines. PM Willwren or Jr's3800. They have the magic book.
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