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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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70 C/10 SWB 402/TH400/3.73 "The Needy Beast"
200,000 Mile Club
Disc Brake Club
Owner installed options:
Front Sway Bar
Power Steering
Power Brakes
Cigar Lighter
Courtesy Lights
Deluxe Side Markers
Wiper Delay
Sliding Rear Window
Power Windows
Power Locks
Sniper EFI
2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear
Last edited by 70STOVEBOLT; 12-22-2021 at 09:17 AM.
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