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Old 01-28-2012, 03:12 PM   #1
JCampbell
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Join Date: Apr 2008
Location: Hesperia, Ca
Posts: 1,332
Best Gear Ratio for Overdrive Trans

Just kicking around some ideas...

I'm swapping in TBI 454 into my '77 dually and now I'm seriously considering swapping over to a 4L80E trans. I'm curious what the consensus would be regarding the optimal gear ratio for that particular setup.

It's a Dana 70 HD rear end. I'm assuming it's got 4.11's in it now, although I never bothered to check. Tire size is 225/75/16.

Any thoughts?
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