The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

JimKshortstep4x4 · 05-09-2006, 07:29 PM

Outside of some M-21 transmissions having fine spline input/output shafts, the swap should be an easy one. If your M-21 has the coarse splines you will be set except for the possibility of an adapter ring for the bell housing to fit the smaller bearing retainer on it.

Jim

05-09-2006, 07:29 PM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: Swap M21 for Saginaw Outside of some M-21 transmissions having fine spline input/output shafts, the swap should be an easy one. If your M-21 has the coarse splines you will be set except for the possibility of an adapter ring for the bell housing to fit the smaller bearing retainer on it. Jim Last edited by JimKshortstep4x4; 05-09-2006 at 07:32 PM.