I am looking at new 11" bellhousiings to replace my broken one.(d'oh! Clutch problems much? oh well. One more time in and out with the engine.) What size is the tranny pilot hole in a 3872444? I am using a 3899621 right now, and I know another one would work but they are so darned popular and expensive. Will my tranny pilot correctly in the 3872444? Thanks for the help, I can't find a resource that litsts this info, and I know someone here will have it.

Rad

That unit is from a 66 big block corvette and has the same size hole for the bearing retainer and the 621.

Thanks Wally. I knew I could count on you!

Rad,
The 3899621, 3872444 and 464697 are virtually identical in every way (the differences are EXTREMELY minor).