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Old 10-11-2020, 09:31 AM   #19
rotorwrench
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Join Date: Jun 2010
Location: San Antonio, Texas
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Default Re: Overdrive Transmission in a 1952 F1

The bell housing appears to be a late 1951 Mercury and that is likely the origin of the transmission as well. The late 51 transmissions have the diamond gears so they are a bit stronger in that respect. The R10 should be fine with a flathead. I don't think you can hurt it easily. You will have to try to break it. That was the set up to get for an F1 pickup with a 3 on the tree shift.
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