The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Rear Axle Ratio Charts For 1967

the idiocracy · 07-06-2016, 09:31 PM

I don't know what the C14 is about, but I just looked at my 1967 C10 pickup and there is an HA stamped clear as day on the top side of the passenger tube, pretty close the the pumpkin.

3.73. Super. I was really expecting to see something like a 5.10 or higher based on the fact that I am at 3000 rpms at 65mph.

I see a 3.23 rear gear in my future. Anyone know what diameter the ring gear is? I want to say 8.5", but I also know that GM did an 8.625" ring gear as well. Anyone know?

07-06-2016, 09:31 PM	#45
the idiocracy Registered User Join Date: Jun 2016 Location: Davisburg, Michigan Posts: 54	Re: Rear Axle Ratio Charts For 1967 - 1972 GM Trucks I don't know what the C14 is about, but I just looked at my 1967 C10 pickup and there is an HA stamped clear as day on the top side of the passenger tube, pretty close the the pumpkin. 3.73. Super. I was really expecting to see something like a 5.10 or higher based on the fact that I am at 3000 rpms at 65mph. I see a 3.23 rear gear in my future. Anyone know what diameter the ring gear is? I want to say 8.5", but I also know that GM did an 8.625" ring gear as well. Anyone know?