gear ratios
The truck is a 1988 R30 Silverado dually four door weighing in at over 6600 lbs. The horsepower will be 375 hp, 400 lbs. torque with a Turbo 400 3 speed. Towing a 30 ft Airstream at 7800 lbs. Would li...
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tinkerman56 wrote:That is a 29.3" tire and should put you at 2821 rpm at 60mph.
right now its racing at 60 its top peak power, no rpms just a big fuel gauge. Not to mention 16 225/75 tires
3.55 ratio should put you at 2442 RPM at 60 mph. For a BB that might even be a bit high. If mostly towing at 60 probably fine but if you run empty much or prefer 65/70 mph you might even go to a higher ratio.
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