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GEAR RATIO
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Dan78
I watched Corvette Summer
| Posts: 1
| Joined: 01/11
Posted: 01/03/11
07:53 AM
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what rear gear ratio was used on a 1978 L 82 4 speed car
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waynep7122
Duntov Incarnate
| Posts: 262
| Joined: 08/09
Posted: 01/03/11
09:03 AM
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looks like it could have been either 3;36 to 1 or 3;70 to 1 with the 2 possible 4 speeds....
the automatics seemed to have come with 3;08 to 1 except for some california and high altitude cars with 3;55 to 1 rear ratios...
if you have the 78 .... find the RPO sticker.. the build sheets might be tucked up above the suspension strut in the rear.. but most later 70s cars have a white sticker someplace... glove box.. door jam.. under the hood.. i don't know where they put it... it will have all the RPO numbers that the car was built with....
if not.. with the vin number... you can order a copy of the build sheet...
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