History and Identification of Chevy 10 and 12 Bolt Chevy Differentials
Chevy 10- and 12-bolt axle assemblies have been standard equipment on GM passenger cars, muscle cars, and trucks for decades. The rugged, reliable, and efficient Chevy 12-bolt has established itself as the preeminent rear differential for GM muscle cars since its debut in 1965.
GM / Chevy - Differential Identification – Rigid Axle
General Motors has a wide range of front and rear ends! We carry everything from the 7.25" IFS front end parts, to the large 11.5" rear end parts for 1-ton trucks. We make it easy to verify your exact rear end by providing specs and year, make, and …
GM RPO Codes – Axle Ratio and Differential Identification
The list below is a partial list of typical GM RPO Codes, specifically the codes pertaining to Axle Identification, Differential Type and Gear Ratio. RPO Code Description
GM 10-bolt Identification Guide. Know What You’re Looking At
Mar 13, 2018 · If you’re looking for a good, economical 10-bolt rearend to rebuild or install into your hot rod, you will need to be able to accurately identify the different units so you don’t accidentally come home with a 7.5 or 8.2-inch differential.
GM 10-bolt 8.5-inch Differentials - Hemmings
Oct 5, 2022 · Many classic car and muscle car enthusiasts are looking for a differential that can be easily adapted for daily use, improved fuel economy or for racing. With the costs of Ford 9-inch third members and GM 12-bolts escalating, there are several low-buck alternatives still plentiful at your local salvage yard. The later model GM 8.5-inch…
Differential Identification Guide - West Coast Differentials
Accurate Differential Identification is the first and most important step in your differential repair, upgrade or overhaul project. The following information is provided to help you identify the differential you are working on. If in doubt, consult one of …
GM 10-Bolt Identification and Upgrades | 7.625, 7.5, 8.2, 8.5, 8.6
When it comes to GM rear ends, there are two main designs: the 12-bolt and the 10-Bolt. While most hobbyists set their sights on the 12-bolt, the reality is that there are multiple versions of the GM 10-bolt rear end, one of which can hold 1,000 hp when built properly.
Ask Away! with Jeff Smith: 8.2 or 8.5 — How to Identify GM 10 …
Mar 25, 2016 · Then in 1971, GM corporate decided they didn’t need two different axle housings so they merged the 10-bolt with the 12-bolt. The new corporate 10-bolt started with a medium, 8.5-inch ring gear diameter but retained the 12-bolt’s pinion shaft diameter of …
B-O-P 10-bolt rear axles: A guide to GM’s other muscle-era differential
Dec 24, 2020 · B-O-P 10-bolt 8.2-inch axle usage included: • 1964-’66 Olds F-85, Cutlass, 4-4-2 • 1964-’72 Tempest/GTO • 1967-’71 Firebird • 1964-’71 Buick GS/Gran Sport. Eaton’s Posi Performance differential carriers use multiple carbon fiber …
GM 12-Bolt Differentials | The Online Automotive Marketplace - Hemmings
Sep 23, 2018 · Many General Motors vehicles can benefit from the replacement of their original differential assemblies with a stronger 12-bolt, 8.875-inch differential.