Eco Gear

Eco Gear ring & pinion sets are the right choice when price is a factor and quality is essential. Eco gears are made of 8620 heated treated steel for strength and durability.

Application: 1972-2013 GM 8.5" and 8.6" Rearend (will also fit 1980-1987 GM 8.5" corporate front end)

Technical Information

• Ratio: 3.73
• Compatible Carrier: 2.73-5.38
• Pinion Splines: 30
• Ring Gear Bolts: 10
• Rear Cover Bolts: 10
• Ring Gear Diameter: 8.5"