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

**'68OrangeSunshine** · 09-01-2022, 05:35 PM

I ran the numbers on 2 differentials I have.
One, [TPF 1204w] which I had on my '68 C/10 Stepside, but was damaged in a side impact collision, I thought we pulled off a '69 GMC shortbed fleetside. It had been under my Stepside since the Mid '80s. 3.73 Eaton posi. Chart says 1970, not '69, but who can tell the years by looking at a GMC?
The diff I replaced it with [HR 0316w] is [going by the charts] off a '67 P/10 4.11 open.
It was a longbed because the 5' handbrake cables didn't work on my 115'' wheelbase C/10. The guy who sold it to me said it came off a '65 or '66 truck. I had it rebuilt with new axles, bearings and 3.73 gears. Still breaking it in.

09-01-2022, 05:35 PM	#72
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,054	Re: Rear Axle Ratio Charts For 1967 - 1972 GM Trucks I ran the numbers on 2 differentials I have. One, [TPF 1204w] which I had on my '68 C/10 Stepside, but was damaged in a side impact collision, I thought we pulled off a '69 GMC shortbed fleetside. It had been under my Stepside since the Mid '80s. 3.73 Eaton posi. Chart says 1970, not '69, but who can tell the years by looking at a GMC? The diff I replaced it with [HR 0316w] is [going by the charts] off a '67 P/10 4.11 open. It was a longbed because the 5' handbrake cables didn't work on my 115'' wheelbase C/10. The guy who sold it to me said it came off a '65 or '66 truck. I had it rebuilt with new axles, bearings and 3.73 gears. Still breaking it in. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.