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Eman · 02-07-2016, 01:23 PM

I'm looking at changing gears in my 3rd gen bracket car. The Wallace calculator doesn't seem to allow for converter slip, assuming you have an automatic. I run 29" tall tire and a t350 with 4.50 gear and at 100mph in the 1/8th my car is at 5900-6,000RPM. Wallace calculator says 5213 for my gear/MPH.
Wallace uses MPHxGear Ratiox336 divided by Tire Height=RPM

02-07-2016, 01:23 PM	#4
Eman Member Join Date: May 2014 Location: E TN Posts: 473 Likes: 16 Liked 133 Times in 76 Posts	Re: Gear Ratio? I'm looking at changing gears in my 3rd gen bracket car. The Wallace calculator doesn't seem to allow for converter slip, assuming you have an automatic. I run 29" tall tire and a t350 with 4.50 gear and at 100mph in the 1/8th my car is at 5900-6,000RPM. Wallace calculator says 5213 for my gear/MPH. Wallace uses MPHxGear Ratiox336 divided by Tire Height=RPM Last edited by Eman; 02-07-2016 at 01:27 PM.