gear change - CLASS RACER FORUM

07-20-2021, 11:34 AM	#7
Bowtieguy1967 Junior Member Join Date: Apr 2006 Posts: 7 Likes: 3 Liked 1 Time in 1 Post	Re: gear change MPH X gear ratio X 336 / tire height (this only works assuming the trans final drive ratio is 1-1) Examples: 120 MPH X 4.56 X 336 ÷ 28" = 6556 RPM 120 MPH X 4.88 X 336 ÷ 28" = 7027 RPM 120 MPH X 5.13 X 336 ÷ 28" = 7387 RPM Obviously converter slip is not factored into the equation.

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