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Old 04-21-2010, 03:50 PM
Anthony Anthony is offline
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Join Date: Apr 1999
Location: cleveland, OH
Cobra Make, Engine: CSX4000, 427
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Other than using a "weak" overdrive toploader, all of the 4-speeds have 1:1 4th gear, so cruising rpm's will depend upon rear gears and tire OD.

If you want cruising capability with a 4-speed, then get a wide ratio toploader, and run 3.07 rears, maybe going to 2.88's, but I'd stick with 3.07's.

If you want to run a close ratio toploader, then you pretty much need to run a 3.50 rear or close to that. With a 3.07 rear, starting in 1st, or reverse, is too hard fo regular use.
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