Jerry and Hollow,
Thanks for the input and Jerry, thanks for the offer to try some parts--that is very kind of you.
I just went ahead and ordered a Holley 10.5 power valve from Summit. The motor pulls close to 22 inches of vacuum under idle, so using the formula, that is what it needs. Plus they are not expensive and easy to install, so I will just try that.
Jerry, what do you think about the 500CFM carb? I have been second guessing my choice and believe the 300CFM may be the better choice. These old V6's are built for torque only--the redline on them is 3800 RPMs and net HP is only 140. So if you plug that into the carb calculators for 305 cubic inches, that comes out for a street engine at 285CFM (using Summit's CFM calculator). Maybe I screwed up on the carb sizing to begine with...any thoughts on that?
Thanks again. Will post back when we try the 10.5 PV.
