6 pack carbs

[Butch Harley]

6 pack center carb # 0-4144-1 what size power valve came stock 6.5 ? And jet size ? Its for a 383 cu in motor THANKS

 

[Butch Harley]

I found the info FYI -PV-6.5 JET 62

 

[PurpleBeeper]

And "maybe" adjust the power valve. I think the rule of thumb is to run a power valve that is half your idle vacuum....so you need 13" Hg vacuum. And yes, the 6.5 is stock.

 

[33 IMP]

There are two (at least!) competing theory as to power valve sizing. If you want to experiment, I suggest BIG swings to determine which direction works, for YOU. Highest available, (ten something, I don't know exactly) and a 3.5.
(A lot easier to test on a four barrel than a sixpack.)