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King951 · 11-17-2017, 04:08 AM

Hey there,

My 1971 C20 that screams on the freeway. Was curious as to what the stock rear axle gear could be / how could I check? I didn't notice any tags on the rear axle other than the common stamped "60". It is a 1971 C20, 307 engine and 3 speed manual transmission. Is there an online resource of sort that shows the factory options as far as rear ends / gearing goes?

Thanks in advance.

EDIT: If it makes a difference my truck has both G50 & G70 order options for the heavy duty rear suspension springs / etc. https://imgur.com/K439yHm

11-17-2017, 04:08 AM	#1
King951 Registered User Join Date: Oct 2017 Location: Riverside, CA Posts: 33	Stock Rear Axle Gearing Hey there, My 1971 C20 that screams on the freeway. Was curious as to what the stock rear axle gear could be / how could I check? I didn't notice any tags on the rear axle other than the common stamped "60". It is a 1971 C20, 307 engine and 3 speed manual transmission. Is there an online resource of sort that shows the factory options as far as rear ends / gearing goes? Thanks in advance. EDIT: If it makes a difference my truck has both G50 & G70 order options for the heavy duty rear suspension springs / etc. https://imgur.com/K439yHm