This new speedometer driven gear fits 4 speed toploader transmissions. Typically fitted to Toploaders when factory fitted with 3.70 ratio rear end Will work with 3.70 With Black Gear, 4.30 With Pink Gear See attached chart to help you decide what you require based on gearing and tyre height OEM number: C2DZ-17271-C Factory gearing is based on approx 25.4" tall tyre Tech Tip: If you can determine whether your speedometer is reading too slow or too fast, it is worth noting that a lower # of teeth will cause it to turn faster versus a higher # of teeth to turn slower

Toploader transmissions were fitted with either of two mainshaft drive gears. 

Black gears were used for rear end gearing from 2.75 to 3.5

Pink gears were fitted for rear end gearing for 3.5 to 4.11

 

Use this handy chart to calculate your requirements

Based on 25.4" Tall Tyre

Driven Gear Pink Gear Black Gear
16 Teeth 3.25 2.75
17 Teeth 3.50 3.00
18 Teeth 3.70 3.25
19 Teeth 3.90 3.36
20 Teeth 4.11 3.55

More From This Category

Richmond Manual Transmission Case Plug, Case Plug Kit (5 Pcs), Kit

Richmond Manual Transmission Case Plug, Case Plug Kit (5 Pcs), Kit

$47.32

View
TCI TRANSMISSION GM POWERGLIDE-TH400 ALUM TRANS HANDLES

TCI TRANSMISSION GM POWERGLIDE-TH400 ALUM TRANS HANDLES

$127.02

View
TCI Speedometer Gear, Driven, 38-Tooth, Blue, GM, 200C, 350C, 375B, TH425, TH400, TH475, 700R4, Each

TCI Speedometer Gear, Driven, 38-Tooth, Blue, GM, 200C, 350C, 375B, TH425, TH400, TH475, 700R4, Each

$44.73

View
TCI GM Transmission to For Chrysler 318/340/360 w/ 6-Hole Crankshaft Adapter Kit

TCI GM Transmission to For Chrysler 318/340/360 w/ 6-Hole Crankshaft Adapter Kit

$1,384.83

View
RTS OE Band Adjustment Nut, C4,C9,C10, Coarse Thread, 64-80, Sold Each

RTS OE Band Adjustment Nut, C4,C9,C10, Coarse Thread, 64-80, Sold Each

$18.38

View
RTS OE Speedometer Gear, For GM, 700R4 4L60 TH350BOP, 18 Tooth Drive, Each

RTS OE Speedometer Gear, For GM, 700R4 4L60 TH350BOP, 18 Tooth Drive, Each

$47.25

View