I have access to a rear end from a '77 Buick Skylark that appears would fit easily into a 52 Chev PU. am wondering if anyone might know what theBuick ratio might be. The Buick was an A.T. car, but don't know what engine. I have no idea what was available in those cars. ???? Any help is appreciated.

EASY...........pull the cover off the rear end and count the teeth.......divide the big number by the small number.........and that's your ratio.....

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If you pull the cover, you should find two numbers stamped on the ring gear. One is the number of teeth on the ring gear, the other is the teeth on the pinion. Divide the smaller number into the larger.

If for any reason you can not remove the cover, rotate the pinion and count the number of turns in relation to 1 revolution of the axle. IE: 2.5 turns of the pinion to one of the axle is approx 2.50 ratio. 3.75 turns approx 3.73 ratio etc.
A wild guess it will be in the mid 2's

Thanks for the info- now all I need is some "want-to"!!

The '77 Skylark is just a Nova with soft springs & different trim. Scroll down almost to the bottom & you'll find a chart of what ratios came with what engine/trans combos in '77, along with some axle codes.

http://novaresource.org/axle.htm

I had a car close to that year. My guess is that it either a2.73 or a 3.08 Don,t look for Strange axles lol