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Old 09-09-2021, 03:17 PM
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05snopro440 05snopro440 is offline
Rusty Rat Rodder
 
Join Date: Sep 2012
Location: Sherwood Park, Alberta
Posts: 3,959
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What's your tire diameter? Something doesn't add up to be having to "really got to spin the motor just to go 60 mph."

A 3:55 gear with a 3 speed and a 24" diameter tire would spin almost 3,000 RPM at 60MPH. Anything more normal like a 26 or 28" diameter tire would have you at a much more reasonable RPM. I'm running 31" tall tires with a 3.42 and a TH400 and do long highway trips.

If you want to switch to a manual that's fine, but you may want to examine the whole setup you're running.
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