Quote:

If your going to run a cam that is that big you better think about a 4bbl instead of the 6 pack.
You need vacuum to operate the end carb properly.
Im running a 340-6 in my 81 shorty with a OD833 and 3.91s.
I have 268/272/.450/.455 MP Purple cam and performes real well with the ^ pack..




what? I'm running a 588 solid roller cam w a factory 6-pack. Anyway, that should run pretty good. You might need a little more cam. The trcik will be getting out of the hole w/ the 4 speed. I'd spend a few dollars and get the heads cleaned up..at least do some home porting.
Good luck


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