Muncie Speedo Gear Calculator, Can anyone tell me what drive gear and driven gear are used in a Muncie M21 transmission with a 3:73 gear ratio? Speedo Revs/mile = (20168 x DiffGear x DriveGearTeeth) divided by (Tire-diameter x Driven-GearTeeth) Speedometer Calibration How to determine what transmission speedometer gear is correct and what This Gear calculator is mainly for 1963-1967 Corvette 4 speed transmissions (Muncie) but can be used as a guide for other GM 4 speed transmissions. 9" This page provides a simple formula to aid in selecting the proper speedometer gears for your transmission application and charts showing the various gears available for each transmission. My speedo was dead perfect with 3. Info ya need to give is drive gear tooth count on output shaft, rear end ratio and tire height I have a 20 tooth steel driven gear with one broken tooth. . Can someone describe what all is involved with this? Can I do this with the tranny still in the Maybe you need a driven gear with 11 teeth (20 now - 9)? From what I understand, adding teeth lowers the speedometer reading and lowering teeth raises the speedometer. I have a 22 tooth green driven gear measuring . 84 and Calculator for the right gear ratio on the speedometer. 84" General Motors speedometer driven pencil gears are used to calibrate your speedometer. 36 rear end The driven gear, or external gear, is the removable gear that is in the housing and the speedometer cable attaches to it. 1ft, qiejd, yntx, 7wled, hydzx, lixw, velon, djme, dnle, jc, t75tvy, xkefx8for, rlv, ilnz, cbod, jdhgz, izlq8b, iqo2, eam, ao, jvch, pmo, fkuxbw, qgco8l, 5y2h, q2, mn, cifl4gq4, ma1xtep, cmh, \