Inliners International Forums General Discussion Drive Train What is the early Saginaw 3 speed OD ratio

Does anybody know the gear ratio for 1st, 2nd, and overdrive for the Saginaw 3 speeds from around 1955 to 1962 Chevy models.
Also, were there more that one gearing sets for these old 3 speed OD's ?
I don't even know, if these were all Saginaw or if some were Muncie ??

Ed

Dear Ed;

The ratios are the same as the 3 speed W/O overdrive and there was only one choice.

The OD ratio is 1 to .72. A 28% reduction.

Good luck, John M....

Hi John
Do you happen to know what ratio 1st and 2nd is.

Ed

Hey Ed,
The Chevrolet Truck Shop Manual for 1955 second series lists the "standared equipment" 3 speed gear ratios as
1st...2.94 to 1,
2nd...1.68 to 1,
3rd...1.00 to 1,
reverse...2.94 to 1

Hope this helps.

Good info ! It will help me decide what rearend to check into.
Thanks John and Rustyoldtruck.

Ed