RustyRatRod's Guide To Hot Rod Bliss

Hi Rani, sometimes you have to be, uh, inventive. In the seventies, after I'd put the 340 in the 70 RR, I wanted an "easier" clutch. I found out that 'about that time' there was a 10 1/2" diaphragm clutch used in Corvettes. These would have the same bolt pattern as a B&B (3 finger). This was an OEM replacement bought through a parts store. Worked great. You are talking about a factory 340 with headers, in a much heavier car, over 3850 lbs

Of course there IS a limit, that is, OEM clutches were designed for OEM HP. I never cared for the scalloped "sort of" 11" used in the 70 big block cars, the one I had would never release clean, reliably. But that IS a setup.....was designed to hold an OEM 440-6, and has a 10 1/2" bolt pattern.

The trick nowadays is finding good quality replacements without spending and arm and a leg