The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Looking For Info on 3-Speed Trans Ratios

C10 - C90 Bill · 01-06-2007, 08:28 PM

I was under my '72 C-10 today and wrote down the numbers off my 3-Speed trans. The number located on the main case is 3925847. The trans seems to be original to the truck as the date code reads Feb 20, 1972 (B202).

I'm trying to find out what gear ratios the trans has, especially 1st gear.

Any info would be appreciated.

01-06-2007, 08:28 PM	#1
C10 - C90 Bill Registered User Join Date: Nov 2001 Location: Moneta, VA USA Posts: 3,064	Looking For Info on 3-Speed Trans Ratios I was under my '72 C-10 today and wrote down the numbers off my 3-Speed trans. The number located on the main case is 3925847. The trans seems to be original to the truck as the date code reads Feb 20, 1972 (B202). I'm trying to find out what gear ratios the trans has, especially 1st gear. Any info would be appreciated.