Home > Suspension > 1970 - 1981 Firebird Rear Axle Positive Traction Unit 3-Series for 10-Bolt 3.08 - 3.90
	Our Price: $549.95 PART NUMBER: SUS-639 Qty:

Description Technical Specs   1970 - 1981 Firebird Rear End Axle 3-Series Positraction Traction Carrier Unit for 8.5 10 Bolt Correct 3 series posi traction unit for 70 - 81 Firebird or Trans Am models with 30 spline axles and 8.5 rear end. Perfect for 3.08 - 3.90 gear ratio. Heavy duty, premium quality! The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence and performance you need. Get longer life and better traction with this heavy duty Yukon Dura Grip Positraction. Prefect fit for all 70-81 models with an 8.5 rear differential and 30 spline axles. 4-spring, clutch style positraction Fits GM 8.5″ and 8.6″ with 30 spline axles 2.73 ratio and up only Assembled in the USA Fully rebuildable Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth ~~NOTE: Please double check your Rear End before purchasing. Rear Ends are commonly changed out over the years and the one in your Firebird might not be the one that came from the factory. PART NUMBER: SUS-639 Technical Notes: Yukon recommends the use of high grade GL-5 gear oil and Yukon LSD (Limited Slip Differential) additive for long life and smooth operation. The use of synthetic oil is allowed but may result in aggressive or noisy operation. Features 1 year warranty against Manufacturer defects Assembled in the USA Fits 30 spline axles Other great products you might need 1967 - 2002 Firebird Positive Traction Rear End Axle Lube Additive Firebird ACDelco DEXRON Synthetic Rear End Axle Lubricant 75W-90 Gear Oil, 32 OZ Firebird ​Yukon Spicer Rear End Axle Posi Lube, Positive Traction Gear Friction Modifier Additive, 4 Oz. Firebird Rear End Axle Breather Vent Valve Our Price: $13.95 Add Our Price: $33.16 Add Our Price: $9.95 Add Our Price: $8.95 Add

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