MPH = (RPM x tirediamter) / (336 x Total Gear Ratio)
Total gear ratio is differential gear x transmission gear x transfer case gear(usually 1)
Tire diameter needs to be measured diameter not advertised.
1984 CJ 7, SBC 350TBI, 700R4, D 300, AMC 20, D30, 35" Mickeys, 3.54 Gears, 4" susp. Lift, 2" body lift.
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In Progress - 4.56 gears, Aussie Rear Locker, Moser 1 Piece Axles
Coming Soon - CV Shafts, Welded Tubes, trusses