1981 GMC Transmission & Drivetrain

Ring and Pinion Gears,USA Standard 8.875" GM 12 Bolt Truck, 3.08 Ratio Rear Ring & Pinion GearInstall Kit Axle Bearings & Seals

Part Number: SPZ-10680

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Estimated Ship Date: Dec 9, 2026 if ordered today

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Ring and Pinion Gears, 5.38:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 10.5 in. (14-bolt), Set

Part Number: YGA-24140

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Differential Carrier Cases, GM 10.50 in. 30 Spline, 4.10 and Down Ratio, Each

Part Number: YGA-20100

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Grizzly Locker, Dana 60, 30 Spline, 4.10 Down Ratio, Each

Part Number: YGA-28002

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 8, 2026 if ordered today

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Ring and Pinion Gears, 5.13:1 Ratio, 29-spline, Standard Ring Gear Rotation, Dana 60, Set

Part Number: YGA-24063

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Differential Carrier, Dura Grip Positraction, Clutch-type, 30-spline, Nodular Iron, Dana 60, Dana 61, Each

Part Number: YGA-26037

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 9, 2026 if ordered today

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Clutch Kit, 5/6-Speed Conversion, Organic, 1 .125 in.-26-Spline, 11 in. Diameter Disc, Buick, Checker, Chevy, GMC, Pontiac, Oldsmobile, Kit

Part Number: HAY-83-1102

5.0 out of 5 stars ( 1 )

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Ring and Pinion Gear, 4.11:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36216

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Differential Cover, Aluminum, Black Finish, Chevy, GMC, GM 8.5/8.625 in., 10-Bolt, Rear Axle, Each

Part Number: PPE-138051320

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Estimated Ship Date: Dec 14, 2026 if ordered today

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Gear, Ring and Pinion, 3.08:1 Ratio, GM, 8.875 in., 12-Bolt, Set

Part Number: MGR-GM12-308

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Valve Body Compu-Flow Manual Forward Pattern TH400

Part Number: ATI-403300

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Axle Shaft, Cut-To-Fit, Rear, 30-spline, 38.200 in./42.200 in., GM 10.5 in. (14-bolt), GM 11.5 in.

Part Number: YGA-21641

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Clutch Kit, 450 Street, 11 in. Disc, 26 Spline, 1.125 in. Input Diameter, Diaphragm, GM, Kit

Part Number: HAY-91-1102

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Estimated Ship Date: Nov 30, 2026 if ordered today

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Differential Pinion Yoke, 1350, Strap Style, 30 Spline, Steel, GM 10.5 in., Each

Part Number: YGA-41179

4.5 out of 5 stars ( 2 )

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Automatic Transmission Master Repair Kit, Chevy, GMC, Olds, Pontiac, Jaguar, Jeep, Rolls Royce, TH400, Kit

Part Number: ATP-JMS9

4.25 out of 5 stars ( 4 )

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Differential, Auburn, Grip-N-Loc, Limited Slip, 26-Spline, GM, 7.5 in., 7.625 in., Each

Part Number: AUB-546044

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Direct Fit Axle Shafts, Rear, Right or Left, 33-Spline, Steel, 32.75 in. Length, 8-Lug, Chevrolet, GMC, GM 9.5 in., Each

Part Number: YGA-21252

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Ring and Pinion Gears, 3.54:1, 29-spline, Reverse Rotation, Dana 60, Thick Gear, 4.11:1 and Down Carrier, Set

Part Number: YGA-24058

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Axle Bearing, Dana 60, Each

Part Number: YGA-10009

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Gear, Ring and Pinion, 3.73:1 Ratio, GM, 9.5 in., 14-Bolt, 1997-2013, With 33 Spline C-clip Axles, Set

Part Number: YGA-24166

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 9, 2026 if ordered today

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Automatic Transmission Pan, Stock, Aluminum, Polished, GM, TH400, Each

Part Number: TCI-228010

3.0 out of 5 stars ( 4 )

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Axle Shaft, Rear, 4340 Chromoly, 30-spline, 35.000 in. Length, Full Floating, GM 10.5 in (14-bolt), GM 11.5 in

Part Number: YGA-21716

5.0 out of 5 stars ( 1 )

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Differential Clutch, Steel Pack, Dura-Grip, Eaton, 18-Plate, GM, 8.875 in., Set

Part Number: YGA-16110

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 7, 2026 if ordered today

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Transmission Adapter, Aluminum, NV4500 to NP205 Transfer Case, Chevy, Small Block V8, V6, Kit

Part Number: ADD-27-0030

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Gear, Ring and Pinion, 4.11:1 Ratio, GM, 12-Bolt Truck, 3 Series, Set

Part Number: RMG-6903501

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