GM 8.5 FRONT

77-87 K10/20 V10/20 pickup

77-91 K5, V10 Blazer

77-91 K10, V10, K20, V20 Suburban

81-87 K 1500, 2500 pickup

81-91 K10, V1500 Jimmy

81-91 K1500, 2500 Suburban

Cover bolts: 10

Ring gear diameter: 8.5”

Carrier breaks: 2.56-down or 2.73-up

Pinion shaft diameter/splines: 1.625/30

Inner axle shaft diameter/splines: 1.30/28 (77-87), 1.28/30 (88-91)

Outer axle shaft diameter/splines: 1.21/19

Available ratios: 2.73, 2.76, 2.93, 3.08, 3.23, 3.42, 3.73, 3.90, 4.11, 4.56, 4.88, 5.13, 5.38, 5.57

Part Name	Part Category	Condition	Price	Shipping
GM 8.5 Front (10 Bolt Corp) Bearing Kit	Bearing Kits	New	$165.00	$15.99
	This kit includes OEM Timken bearings and races along with high quality seals and small parts. Included in this kit are carrier bearings and races, pinion bearings and races, pinion seal, complete master shim kit, ring gear bolts, pinion nut, crush sleave, thread locking compound, marking compound with brush. These Read More ...

Part Name	Part Category	Condition	Price	Shipping
Eaton Posi-Trac GM 8.5 Front 28 Spline 77-88	Posi-tracs / Limited Slips	New	$695.00	$29.99
	Eaton is your traction control solution. With an Eaton you get bullet proof performance, Advanced clutch technology, high impact precision-forged gears, race-bred carbon fiber friction discs, high strength nodular iron case and a 1 year manufactures warranty. This unit is rebuildable. This eaton posi fits a GM 8.5 front differential Read More ...

Part Name	Part Category	Condition	Price	Shipping
Eaton ELocker GM 8.5 Front 30 Spline	Electric Lockers	New	$950.00	$35.99
	The Elockers electromagnetic locking mechanism is the next generation of aftermarket differential technology. Performs as an open differential until you decide that you need more traction. Eaton Elocker is your push buttom solution to almost any traction problem. when locked the Elocker performs as a full locker, Read More ...

Part Name	Part Category	Condition	Price	Shipping
Yukon Duragrip GM 8.5 Front 30 Spline 3.23-up Ratios	Posi-tracs / Limited Slips	New	$595.00	$35.99
	Yukon Duragrip positraction for a GM 8.5 rear with 30 spline axles will fit 3.23-up ratios. THE YUKON DURAGRIP USES A NODULAR IRON CASE AND FORGED 4130 INTERNALS FOR ADDED STRENGTH ALONG WITH COMPOSITE CLUTCHES FOR HIGH PERFORMANCE AND LONG LIFE. ALL UNITS ARE REBUILDABLE AND MANY OFFER UPGRADES TO Read More ...

Part Name	Part Category	Condition	Price	Shipping
Detroit Locker GM 8.5 Front 30 Spline	Lockers	New	$950.00	$35.99
	The Detroit Locker maximizes traction by delivering 100% of the torque to both drive wheels. It is engineered to keep both wheels in a constant drive mode, and has the ability to automatically allow wheel speed differention when required. Applications are also available for C-Clip style axles. No other performance Read More ...

Part Name	Part Category	Condition	Price	Shipping
Detroit Locker GM 8.5 Front 28 Spline	Lockers	New	$950.00	$35.99
	The Detroit Locker maximizes traction by delivering 100% of the torque to both drive wheels. It is engineered to keep both wheels in a constant drive mode, and has the ability to automatically allow wheel speed differention when required. Applications are also available for C-Clip style axles. No other performance Read More ...

Part Name	Part Category	Condition	Price	Shipping
Detroit Truetrac GM 8.5 Front 28 spline	Posi-tracs / Limited Slips	New	$650.00	$35.99
	Eaton's Detroit Truetrac was the first heilcal gear differential ever introduced into the automotive aftermarket. It remains the leading helical gear-type limited slip differential in the industry. Its helical gear design eliminates the need for wearable parts, resulting in maintenance free traction. Recongnized not only for its durability but also Read More ...