Yukon ZG GM8.2-355 GM 8.2in 10-Bolt C-Clip Ring Pinion 3.55 for 1964-1972 GM

Vehicle Fitment

• 1964-1972 Chevrolet Chevelle/Malibu
• 1967-1970 Chevrolet Camaro
• 1964-1972 Chevrolet Impala, Biscayne
• 1964-1968 Chevrolet Nova/Chevy II
• 1965-1971 Chevrolet Caprice
• 1964-1972 Chevrolet El Camino, Nomad
• 1970-1972 Chevrolet Monte Carlo
• 1967-1972 Pontiac Firebird
• 1964-1972 Pontiac GTO, Tempest
• 1971-1972 GMC Sprint

Fitment Notes

• This is the GM "corporate" 8.2" 10-bolt C-clip rear axle (25-spline pinion) - a different, physically distinct design from the Buick/Oldsmobile/Pontiac "BOP" 8.2" differential, which requires a different gear set entirely
• The corporate 8.2" was phased out starting in 1971 in favor of the similar-looking 8.5" 10-bolt; both axles were in use during the 1971-1972 transition years, so confirm your exact ring gear diameter (8.2" vs. 8.5") before ordering
• Standard rotation only
• This is a ring & pinion gear set only - it does not include bearings, races, shims, or seals; pair it with a separate install or master overhaul kit for a complete gear swap

Features

• Ring & pinion gear set for the GM "corporate" 8.2" 10-bolt differential
• 3.55 gear ratio
• 25-spline pinion
• 10 ring gear bolts
• 8.2" ring gear diameter
• Manufactured by USA Standard Gear to exceed OEM specification
• Designed for quiet, precise operation and straightforward setup
• Backed by a 1-year warranty against manufacturer defects

Specifications

• Differential: GM 8.2" 10-bolt (corporate, C-clip axle)
• Ratio: 3.55
• Pinion spline count: 25
• Ring gear bolts: 10
• Ring gear diameter: 8.2"
• Carrier break: 3.08 and higher
• Warranty: 1 year against manufacturer defects

Included Components

• 1x Ring gear
• 1x Pinion gear

Product Description

The Yukon ZG GM8.2-355 is a ring & pinion gear set for the GM "corporate" 8.2" 10-bolt rear differential, the C-clip axle used across most GM RWD passenger cars from 1964 through 1972 - including the Chevelle, Camaro, Impala, Nova, El Camino, and their Pontiac and GMC counterparts. At a 3.55 ratio, this set is a common choice for restoring proper drivability after a tire size change or dialing in gearing for street or mild performance use.

Built with a 25-spline pinion, 10 ring gear bolts, and an 8.2" ring gear diameter to match factory specifications, this set is engineered for quiet operation and straightforward setup. Because GM transitioned from the 8.2" to the similar-looking 8.5" corporate 10-bolt starting in 1971, and because a separate BOP-specific 8.2" axle exists for Buick/Olds/Pontiac applications, confirming your exact axle identification before ordering is the key step - mixing these up is a common and avoidable mistake.

This is a gear set only, not a full install kit - it doesn't include the carrier bearings, pinion bearings, shims, or seals needed to complete a gear swap. Pair it with an appropriate master overhaul or bearing install kit for your specific application. Installation requires differential disassembly and proper backlash and pinion depth setup, so it's best handled by an experienced DIY installer or a differential shop.