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Post Info TOPIC: 57 Safari diff ratio


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57 Safari diff ratio


I cleaned off the grease on the 3 member on the P.S between the vert bolts and found C27 stamped.On the D.S I found a round disc. mounted under one of the nuts but had no info. on it.On the Chevy sites they state two letters were used to determine the ratio but the Canadian made ones must be different.Does anyone know why the round disc. is there with no numbers/letters stamped on it?

Thanks

 



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Canadian Poncho Superstar!

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I don't have the code info you are asking about, but in general terms for 1957 (they year they switched to 14" wheels) the rear ratios were 3.36:1 (automatic), 3.55:1 (manual), 4.11 (manual with overdrive).



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CdnGMfan wrote:

I don't have the code info you are asking about, but in general terms for 1957 (they year they switched to 14" wheels) the rear ratios were 3.36:1 (automatic), 3.55:1 (manual), 4.11 (manual with overdrive).


 X 2. These were the only ratio's for 57 for U.S. and Canadian Chev and Canadian Pontiac for the passenger car. 



-- Edited by long stroke on Wednesday 11th of October 2017 06:27:54 AM

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Got the axle out and cleaned up so now I am ready to make up new brake lines.



-- Edited by Canwag57 on Saturday 27th of January 2018 09:16:48 AM IMG_1167.jpg

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