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Old 09-09-2011, 08:18 AM
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DonC DonC is offline
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Join Date: Jun 2003
Location: West Linn, OR
Cobra Make, Engine: ERA #684, 428 FE, TKO600
Posts: 1,378
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FWIW I'm running the 0.82 fifth with 17" rims and 3.07 rear gears behind a big block that's bored and stroked out to 450 cubes. At 70 MPH cruise I'm turning about 2200 RPM. Wind noise and exhaust noise are just about even. Very happy with this combination.
DonC
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