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Old 05-07-2013, 09:55 AM
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Originally Posted by DrVette View Post

Aren't the 5.7L - Vortec Combustion chamber volume 64cc ?

and the 5.7L - 87-95 TBI heads 76cc ?

You are quite correct this would resolve a major hurdle, however it would take a competent machine shop to shave the heads on an "angle-cut" to resolve the major lack of compression.

Sorry, for the lack of understanding the adapter from MPFI to TBI deal

Edit to say:
Thanks guys for the lack of lighting me up with a 55gl trash bag full of acetylene
Interpretation, thanks for not Flaming Me as a N00b here
A need to check the head casting; there are two variations of the swirl port the 14102191 has a 76 cc chamber but is usually only found on 3/4 ton with tow package and heavier trucks with the 190 horse 350. The 14102193 casting is found on 1/2 ton models and 3/4 ton without tow package with the 207 horse 350. Other than the heads the engines are the same except the 207may have 2 or 4 bolted mains where the 190 will only be 4 bolt mains. But GM is given to some inconsistancy so looking at the part is the only positive way to be sure.

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