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Old 11-28-2006, 08:51 PM
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Chevy Nova 3 speed overdrive

Does anyone know the OD ratio on these?

Strummin

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Old 11-28-2006, 09:53 PM
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3 spd od

I think it is the range of .7 to .8 overdriven not sure...
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Old 11-28-2006, 10:27 PM
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The 64 Impala 3-speed OD had an overdrive ratio of 0.7, and I would imagine the Nova used the same box.

http://www.55-57chevys.com/coccc/art...6/64bsty1.html
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Old 11-28-2006, 10:59 PM
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Would this be the same for a 6? A few yeas ago I saw a '62 wagon with the OD option.

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Old 11-29-2006, 07:15 AM
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I don't think GM designed a special OD transmission just for the Nova.
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Old 11-29-2006, 08:53 PM
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Ok. Then what rear ratio did GM use behind early '60s overdrive equipped cars? Something's got to be different here.

Strummin
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Old 11-29-2006, 11:15 PM
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The Impala came with a 3.70.
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Old 11-30-2006, 12:59 AM
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Thanks for everyone's help.

Strummin
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