Thread: Improve gas mileage on a 427 so ?
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Old 03-02-2020, 09:07 AM
Anthony Anthony is offline
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Join Date: Apr 1999
Location: cleveland, OH
Cobra Make, Engine: CSX4000, 427
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Quote:
Originally Posted by bwcobra15 View Post
Correct. I'm looking at going from 3.50:1 to something like 3.27:1 at some point in the future.
With a 427 cid, and the TKO600 2.87 1st gear, you can run a 3.07/3.08 rear, or something like that. It would work fine, and then with the .82 5th, it would be great for cruisin. That's what I'd recommend. I wouldn't change to a 6 speed. Just change the rear.

I ran a wide ratio TL, 2.78 1st, with a 3.07 rear, and it was fine. And then crusin was pretty good for just a 4 speed.
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