Quote:
Originally Posted by MrBeast
Using a Digital Tach to verify Engine RPM and a GPS my speed, with a 235/85R16 tire, running at 65 MPH with the 4.88 rear, .73 over drive on the NV4500, the truck turns about 2445 RPM, By the numbers a 235/85R16 is 31.73" tall, and will turn over 635.6165896 revolutions per mile, to travel at 65 mph this will require that the tire make 41315.07832 revolutions per hour. Divided by 60 minutes this is 688.5846387 rpm. Take that x. 4.88 x.73 and you get 2453 RPM at the engine. So I am fairly certian that it is a 4.88
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Shaazzzam!! What a way to figure out gear ratio. I am impressed.