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#1
03-10-2009, 01:22 AM
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Re: carburetor jets
Mark;
I've always stuck with 6.5/8.5 with complete success, so I couldn't really say. Eric 
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#2
03-10-2009, 01:52 AM
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Re: carburetor jets
Eric, I ran the stock factory spec. 4346 carb except for the jetting. If memory serves me correctly, the PVs were both 6.5 but don't quote me on that. I don't know what the vacuum idle was. I couldn't have asked for the carb to work any better. I have a 4346 done the same way on our L78 engine and it works the same way. Having carbs that were already built for the application probably helped a lot as far as tuning went. A friend of mine does some racing and he gets into modifying the restrictors in the body of the carb, stuff that I know nothing about. When he is done, it is surprising at how well a carb can run, and how far off most carbs are when he first starts on them.
__________________
Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now. 
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#3
03-10-2009, 03:42 AM
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Re: carburetor jets
I just checked my old GM parts books. For '69 they list the 3877167 power valve for the rear in all applications with various PVs for the front. For 1970 they list the same 3877167 PV front and rear for all applications. Not that I trust everything in the parts books, but that is what they show.
__________________
Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now.
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