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Old 03-26-2024, 06:20 AM   #11
GB SISSON
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Join Date: Jan 2014
Location: Orcas Island Washington
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Default Re: What gears in a stock '48 F1 with 9" rearend?

As Tubman mentioned, tire diameter has a lot to do with the equation. There is a formula where you plug in your tire dia and axle ratio and use some fairly simple math and it gives you your rpms at 60 mph in your final drive 1/1 ratio. I know the formula is out there on the WWW. And Ron, I'm gonna look up that transmission right now.
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