Jesus Posted March 16, 2022 Share Posted March 16, 2022 (edited) Want to Buy differential Ring and Pinion set 3.70 to 3.90 ratio for off a Buick 1956? 1957 to 1959 1960?, I am attaching a picture of old part chances are if you have the part it you know Buick part's better than I, buying for Cousin in Cuba 1959 Buick 4 door now has diesel engine like most Old cars in Cuba thats why they say need non factory ratio specs they say its believe to be of a approx 1957 Buick 3.90 ratio or 3.70 may work also he's looking to replace ring and pinion now has part# 1169269 43 tooth ring 11 pinion wtb part that maybe interchangeable. see attached pic ty. Edited March 16, 2022 by Jesus more detailed description (see edit history) Link to comment Share on other sites More sharing options...
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