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Old 02-20-2011, 01:21 PM
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which rear end gears to buy

im looking for the right rear end gears for my 72 nova. the motor will be a 496 bbc( this motor will be put install in no time) i want to run a manual transmission. the car will be a street cruiser and will see the drag probably once just to see what she can do. would like quick acceleration and decent highway speeds. more so on the quick acceleration side. not really concerned with gas mileage. tires will be 275 50 16. i was thinking the tko 600 w/ .64 OD and 3.70 rear gears. any one have any input? hp goal is 500 ft/lbs and rear end will be a currie ford 9"

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Last edited by slicknova72; 02-20-2011 at 01:26 PM. Reason: more details
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Old 02-20-2011, 04:06 PM
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What is the first gear ratio in that transmission?
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Old 02-20-2011, 05:18 PM
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first gear is 2.87
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Old 02-20-2011, 05:39 PM
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The 3.73 should work fine with that. http://www.ringpinion.com/Calc_RPM.aspx Put some numbers into this and see what you think. Use the numbers in the manual box and multiply by .64 for the overdrive RPMs.
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Old 02-20-2011, 07:37 PM
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thanks i just want to have the correct gears to have max performance. i know its hard to have the perfect setup.
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Old 02-20-2011, 07:53 PM
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That will give you a first gear final drive ratio of 10.71. Should be pretty quick off the line.
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