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View Full Version : Sold GM 621 bellhousing

GotGrunt
10-13-2023, 10:25 PM
3899621 aluminum bellhousing for 168 tooth flywheel & 11” clutch. It’s in good condition, just needs to be cleaned up. No cracks or stripped threads. $175 plus shipping.
GotGrunt
11-01-2023, 08:52 PM
Price drop
x44d80
11-01-2023, 10:22 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
11-01-2023, 10:55 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?

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.
GotGrunt
11-13-2023, 12:44 AM
Still available… some additional pics:
GotGrunt
11-19-2023, 12:03 AM
New price!