Sold GM 621 bellhousing

x44d80 · #1 11-01-2023, 11:22 PM

GLWS. Looks nice. Question on these bellhousings. Were there some 621 bellhousings made for trucks with a larger center sections, or were they different casting numbers?

**GotGrunt** · #2 11-01-2023, 11:55 PM

Quote:

Originally Posted by x44d80

GLWS. Looks nice. Question on these bellhousings. Were there some 621 bellhousings made for trucks with a larger center sections, or were they different casting numbers?

Thanks. I’m pretty sure the truck applications had a different casting number and were made to accept a 12” clutch, so it’s physically different in appearance aside from the larger center hole.

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