Rear Axle Ratio Charts For 1967 - 1972 GM Trucks - The 1947 - Present Chevrolet & GMC Truck Message Board Network

09-02-2022, 08:41 PM

#22

'68OrangeSunshine

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Join Date: Feb 2002

Location: Tucson, AZ USA

Posts: 7,500

Re: Rear Axle Ratio Charts For 1967 - 1972 GM Trucks

Quote:

Originally Posted by badpeanut

i have a 1970 leaf-spring 6-lug 3:07 posi, which is "tpo 0422". I decode this as:

tpo=ca 10 3.07 posi
0422=april 22

what is the meaning of ca vs ce?

at first i thought it might be leaf spring rear suspension vs. Coil spring rear suspension, but i see the same with k-series so this is ruled out.

CA = [2wd] ALL.
CE = '' V8
CS = '' L6
CM = '' V6

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Every 25 years I like to rebuild that 292, whether it needs it or not.

Last edited by '68OrangeSunshine; 09-02-2022 at 10:19 PM. Reason: some pgm made all upper cas letter go to lower case, When Case Size Matters

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