8620 Street, 4 Series

GM 12 BOLT CARRIER NOTES

WHICH SERIES CARRIER?
"A"	Car	Truck
2 Series	.590"	NA
3 Series	1.020"	.895"
4 Series	1.325"	1.145"

Check the distance from the bearing shoulder to ring gear flange ("A") to determine the carrier series for proper ring & pinion selection.

8620 Street Gears, '64 - '82 C10/K10 & K20, Blazer, G10/G20 Van | 1.437" diameter pinion stem, 30 spline pinion, 4 Series (Original Carries with 3.73 ratio and numerically higher). These Gears are manufactured from 8620 alloy and used primarily for street, oval track, and lightweight drag racing applications. Gears are designed to provide excellent service life, but are suceptible to high shock loads. Uses install kit P/N 83-1018.

Display

GM 12 Bolt 8.875
GM 12 Bolt 8.875
Product Code : 429-0280
Richmond Gear. Fits 4 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.
$369.99
Richmond Gear. Fits 4 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.
GM 12 Bolt 8.875
GM 12 Bolt 8.875
Product Code : 629-0204
Richmond Gear. Fits 4 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.
$379.99 $282.64
Richmond Gear. Fits 4 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.

8620 Street, 4 Series

GM 12 BOLT CARRIER NOTES

WHICH SERIES CARRIER?

"A"

Car

Truck

2 Series

3 Series

4 Series

GM 12 Bolt 8.875

GM 12 Bolt 8.875

GM 12 Bolt 8.875

GM 12 Bolt 8.875