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Blazer1970 · 11-18-2002, 12:29 PM

What others have said is correct. Your truck would have come originally with an SM420, a Rockwell/Timken T221 t-case, and nothing bigger than a 327 small block. The first time you could ever get a big block in a 4X4 was in 1988 with that new body style.

11-18-2002, 12:29 PM	#4
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	What others have said is correct. Your truck would have come originally with an SM420, a Rockwell/Timken T221 t-case, and nothing bigger than a 327 small block. The first time you could ever get a big block in a 4X4 was in 1988 with that new body style. __________________ Tim