Vintage Oldsmobiles Curved Dash, Limited Touring, Models 40, 53, 66; Series 60, 70, 90

3rd member Gear ratio for 47 olds?

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Old September 28th, 2016, 02:11 PM
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3rd member Gear ratio for 47 olds?

Does anyone know wat the gear ratio would be for a 1947 6 straight engine & for the 1947 8 straight engine on a 1947 olds business coupe model 66 & 68
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Old September 28th, 2016, 02:33 PM
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410 or 430 I believe.
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Old September 30th, 2016, 09:13 PM
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To: Shot Gun Rich gear ratios

1st gear (6 cylinder 2.666:1)--- (8 cylinder 2.666:1) 2nd gear (6 cylinder 1.661:1( (8 cylinder 1.661:1) 3rd gear (6 cylinder Direct) (8 cylinder Direct) Gear Ratios. I hope this helps you. Good luck. RC
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Old October 2nd, 2016, 07:24 PM
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its in your shop manual if u got oe my 42 is 410 and 430 automatic and stick
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