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2500 rpm @ 60 Sound Right?

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Old 05-17-2004, 08:07 PM
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CrossedFlags77
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Default 2500 rpm @ 60 Sound Right?

I have a '77 Corvette with a 3 speed auto. I was wondering if being at 2500 rpm at 60 sounded correct. I found a gear ratio calculator and it said I had 3:47 gearing. Does anyone know the stock gearing of a '77 L48 3 speed. Any info would be appreciated.

Thanks,
Ryan
Old 05-17-2004, 08:35 PM
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vettfixr
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Default Re: 2500 rpm @ 60 Sound Right? (CrossedFlags77)

That's about what I run in my 74. I'm pretty sure I've got 3:36 gears. A small change in tire diameter will throw those calculators off.
Old 05-17-2004, 08:46 PM
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Ganey
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Default Re: 2500 rpm @ 60 Sound Right? (CrossedFlags77)

Does anyone know the stock gearing of a '77 L48 3 speed. Any info would be appreciated.

Thanks,
Ryan
Sounds about right for typically 3.08 for that combo. There is some slip in the auto. converter.
Old 05-17-2004, 08:58 PM
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redwingvette
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Default Re: 2500 rpm @ 60 Sound Right? (Ganey)

The standard gear for a car with an L48and auto trans was 3.08. The 4 speed manual usualy came with 3.36. You could have special ordered 3.55.
That is about what my car was running when I first got it; it had 3.08 with TH400 auto.
Old 05-17-2004, 09:28 PM
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Pete76Shark
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Default Re: 2500 rpm @ 60 Sound Right? (redwingvette)

Stock for my 76 was a 3.08

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