Desktop Dyno
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Desktop Dyno
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
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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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.
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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Originally Posted by 95BonnevilleSESC
How do you account for a Supercharger in that program?
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Originally Posted by 95BonnevilleSESC
I am M62.
say you wouldnt happen to know the size of the stock throttle body would you?
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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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