6V chevy ring gears have 139 teeth
12 chevy ring gears have 168 teeth
You can heat the ring gear with a propane torch and sweat it off, then flip and sweat it back on.

NAPA has the 168 tooth version, they may also have the 139 tooth version also in their counter catalog. Good luck finding the old codger that knows how to read the book. Or do like I do, flip the book around on the counter and find it yourself. :rolleyes:

chip


Preaching the Hot Rod Gospel according to the 4-stroke apostles:

Suck, Squish, Fire and Fumes