Speedmaster®
GM 8.875" 12 Bolt 12T Truck 30 Spline LSD Limited Slip Differential
Overview
Specs
Brand: | Speedmaster |
Part Number: | PCE204.1031 |
Part Type: | Differential Carrier |
Aftermarket Carrier Style: | Limited slip |
Cover Bolts: | 12 |
Carrier Series: | 4 Series |
Gear Ratios: | 3.73 & Up |
Axle Shaft Spline Quantity: | 30 |
Manufacturer of Axle: | GM |
Carrier Material: | Steel |
Quantity: | Sold individually. |
Notes: | Aftermarket ring and pinion are designed to be thicker ring sets than normal, so the use of an offset carrier in most cases are preferred. Adapter rings and bolts available when normal ring sets are used. |
Description
The GM 8.875" (often rounded to 8.9") 12 Bolt axle is available in passenger car (GM 12P) and truck (GM 12T) rear axle configurations and features an 8.875" ring gear and 30 spline semi floating axle shafts. While both versions of the axle have similar specifications on paper, they do have unique differential carrier housings and most parts, including ring and pinion gears are not interchangeable. Because both axles are commonly referred to as GM 12 Bolt axles, it is important to know which version you have before ordering your parts.
The easiest way to tell them apart is that the passenger car version has a perfectly round differential cover while the truck version has an irregular shape.
Brand Information
In 1979, the company was founded with Pete's Performance, which was a small speed workshop. It began by building engines for customers as a hobby, and it has now grown to include selling, assembling, manufacturing and racing high performance engine parts. Over the years, the company has grown into a worldwide high performance powerhouse. Growing from a one-man bricks-and-mortar business; to now a supply chain in which entails more than 400+ people all across the world. Today, Pete's Performance has evolved into the internationally known Speedmaster: which has distribution centres and offices is Sydney, Los Angeles and Shanghai.