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72 Cheyenne K20 · 09-20-2022, 05:55 PM

I've been on the other end of the ratio spectrum too. Had a 71 K20 I bought from a guy in Montana. 350 & a 4sp with I believe 4.56's. I was scared to get over 50 mph because the engine just screamed. I'd much rather be on this end!

I do have one more question. The front differential is a GM 10 Bolt. Any stamping I can look for on that? I did look for a ratio tag mounted to the cover, but no such luck.

Scott

09-20-2022, 05:55 PM	#5
72 Cheyenne K20 Registered User Join Date: Feb 2003 Location: Staunton, Virginia Posts: 554	Re: 12 Bolt Rear End ID Help Please I've been on the other end of the ratio spectrum too. Had a 71 K20 I bought from a guy in Montana. 350 & a 4sp with I believe 4.56's. I was scared to get over 50 mph because the engine just screamed. I'd much rather be on this end! I do have one more question. The front differential is a GM 10 Bolt. Any stamping I can look for on that? I did look for a ratio tag mounted to the cover, but no such luck. Scott