Can i get a confirmation on this?

Dad · #1 07-21-2011, 05:40 PM

Hi Guy's,
I am new to this site and want to say Hello and ask a question. I've been a GM (Chevy) fan from 1968, and have owned a GM from 1973 to present.
I recently picked up a 67 Chevelle race car and I believe the gears in it are a series #4 GM COPO set, can anyone tell me if this is true. It figures out to a 4.56 ratio
Ring Gear has GM marked on it with 3916230
Pinion Gear has GM 3916231

Thanks for any help.

67L78conv · #2 07-21-2011, 06:26 PM

Welcome to a great site. Yes your gears come back as 4.56 COPO according to my numbers.

Dad · #3 07-21-2011, 06:52 PM

thanks, I wish i would have looked at them before i broke them.

Plowman · #4 07-21-2011, 08:29 PM

Don't we all. I said that same thing many times to my self too. Wecome to the site and let the fun begin. Paul