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Old 12-21-2021, 10:28 PM   #9
70STOVEBOLT
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Join Date: Jun 2005
Location: Winona Lake, IN
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Re: 3 speed RPM question

I have a 70 with a 402 and TH400 with 3.73 gears, also running 255/70-15s and my tach reads about 2500-2600 at 60 mph. The engine doesn’t matter much, the RPM should be the same as your 350, given the same final drive ratio and tire size.
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Last edited by 70STOVEBOLT; 12-22-2021 at 09:17 AM.
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