4 Series Car

8620 Street / Oval Track Gears '65 - '72 Chevelle / Chevy II, '67 - '72 Camaro, '70 - '72 Nova / GTO / Firebird | 1.625" diameter pinion stem, 30 spline pinion, 4 Series (Original Carrier 3.73 and numerically higher). These gears are manufactured from 8620 alloy and are primarily for street, oval track, and lighteweight drag racing applications. Gears are designed to provide excellent service life, but are susceptible to high shock loads. Uses install kit P/N 83-1019.
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GM 12 Bolt 8.875

$193.60

GM 12 Bolt 8.875" Street Gears, 4 Series - 3.73 Ratio

Product Code: 01-888373-4

U.S. Gear. Fits 4 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.

More info

GM 12 Bolt 8.875

$208.30

GM 12 Bolt 8.875" Street Gears, 4 Series - 4.10 Ratio

Product Code: 629-0031

Richmond Gear. Fits 4 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.

More info

GM 12 Bolt 8.875

$193.60

GM 12 Bolt 8.875" Street Gears, 4 Series - 4.11 Ratio

Product Code: 01-888411

U.S. Gear. Fits 4 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.

More info

GM 12 Bolt 8.875

$193.60

GM 12 Bolt 8.875" Street Gears, 4 Series - 4.30 Ratio

Product Code: 01-888430

U.S. Gear. Fits 4 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.

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GM 12 Bolt 8.875

$231.26

GM 12 Bolt 8.875" Street Gears, 4 Series - 4.33 Ratio

Product Code: 629-0378

Richmond Gear. Fits 4 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.

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GM 12 Bolt 8.875

$319.52

GM 12 Bolt 8.875" Street Gears, 4 Series - 4.33 Ratio (LIGHTENED)

Product Code: L629-0378

Richmond Gear. Fits 4 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.

More info

GM 12 Bolt 8.875

$208.30

GM 12 Bolt 8.875" Street Gears, 4 Series - 4.56 Ratio

Product Code: 629-0032

Richmond Gear. Fits 4 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.

More info

GM 12 Bolt 8.875

$194.36

GM 12 Bolt 8.875" Street Gears, 4 Series - 4.56 Ratio

Product Code: G888456

Motive Gear. Fits 4 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.

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GM 12 Bolt 8.875

$193.60

GM 12 Bolt 8.875" Street Gears, 4 Series - 4.88 Ratio

Product Code: 01-888488

U.S. Gear. Fits 4 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.

More info

GM 12 Bolt 8.875

$223.12

GM 12 Bolt 8.875" Street Gears, 4 Series - 5.14 Ratio

Product Code: 629-0034

Richmond Gear. Fits 4 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.

More info

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