The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - '72 C-10 3-Speed to 4-Speed Swap?

C10 - C90 Bill · 03-27-2011, 08:35 PM

I've got the original 3-Speed Trans in my '72 C-10, which I believe is a Saginaw (looking to verify this), which has a 2.85 1st. The truck has 3.73 Rears and I put extra tall tires on the back to off set the low gear. I'm looking at a 4-Speed Saginaw which has a 3.50 1st. This would give me a much better 1st gear plus an extra gear to boot.

I'm more familair with Muncies, but my question is what do you all think of the 4-Speed Saginaw for an everyday truck? and will it be a direct swap, driveshaft and all?

Any info would be appreciated.

Bill

03-27-2011, 08:35 PM	#1
C10 - C90 Bill Registered User Join Date: Nov 2001 Location: Moneta, VA USA Posts: 3,094	'72 C-10 3-Speed to 4-Speed Swap? I've got the original 3-Speed Trans in my '72 C-10, which I believe is a Saginaw (looking to verify this), which has a 2.85 1st. The truck has 3.73 Rears and I put extra tall tires on the back to off set the low gear. I'm looking at a 4-Speed Saginaw which has a 3.50 1st. This would give me a much better 1st gear plus an extra gear to boot. I'm more familair with Muncies, but my question is what do you all think of the 4-Speed Saginaw for an everyday truck? and will it be a direct swap, driveshaft and all? Any info would be appreciated. Bill