1981 CHEVROLET K20 Transmission & Drivetrain

Differential, Eaton Detroit Truetrac, 28-Spline, GM, 8.5 in., Rear, Each

Part Number: ETN-912A556

4.84 out of 5 stars ( 31 )

Estimated Ship Date: Monday 2/9/2026

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Automatic Shifter, Megashifter, Chevy, Mopar, Ford, Lincoln, Mercury, Each

Part Number: BMM-80680

4.72 out of 5 stars ( 58 )

Estimated Ship Date: Monday 2/9/2026

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Clutch Kit, Dual Friction, 1.125 in. - 10-spline, Organic/Carbon Composite Disc, Pressure Plate, Buick, Chevy, GMC, Jeep, Kit

Part Number: CTF-KDF355216

3.88 out of 5 stars ( 8 )

Estimated Ship Date: Monday 2/9/2026

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Torque Converter, Holeshot, 2,300-2,500 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20412

3.8 out of 5 stars ( 15 )

Estimated Ship Date: Monday 2/9/2026

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Clutch Kit, Dual Friction, 1.125 in. - 10-spline, Organic/Carbon Composite Disc, Pressure Plate, Chevy, GMC, Kit

Part Number: CTF-KDF240916

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Monday 2/9/2026

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Torque Converter, Holeshot, 2,900-3,200 rpm Stall Range, GM, THM350/THM400, Each

Part Number: BMM-20483

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/9/2026

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Clutch Kit, Centerforce II, 1.125 in. - 10-spline, Organic Disc, Pressure Plate, Chevy, GMC, 4.3L, Kit

Part Number: CTF-KCFT355216

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 2/9/2026

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Torque Converter, Tork Master, 2,800-3,200 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20402

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/9/2026

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Torque Converter, Nitrous Holeshot, 3,200-3,500 rpm Stall, GM, THM350/THM400, Each

Part Number: BMM-20484

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/9/2026

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Gear, Ring and Pinion, 4.10:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-G885410

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Monday 2/9/2026

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Gear, Ring and Pinion, 3.90:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: MGR-GM10-390

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/9/2026

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Clutch Kit, Centerforce I, 1.125 in. - 10-spline, Organic Disc, GM, Kit

Part Number: CTF-KCF523516

4.5 out of 5 stars ( 10 )

Estimated Ship Date: Monday 2/9/2026

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Differential, No-Slip Traction System, 30-Spline, GM, 12-Bolt, Each

Part Number: PWT-92-0788-3005

3.88 out of 5 stars ( 8 )

Estimated Ship Date: Monday 2/9/2026

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Gear, Ring and Pinion, 4.11:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: MGR-GM10-411

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 2/9/2026

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Clutch Kit, 450 Street, 10.5 in. Disc, 26 Spline, 1.125 in. Input Diameter, Diaphragm, GM, Kit

Part Number: HAY-91-1100

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

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Clutch Kit, Street 650 Clutch Conversion Kits, Organic, Diaphragm, 1.125 in. Diameter Shaft, 26-Spline, 10.500 in. Diameter Disc, Dodge, Plymouth, Kit

Part Number: HAY-92-1100

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/9/2026

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Torque Converter, Nitrous Holeshot, 2,300-2,500 rpm Stall Range, THM350/THM400, Each

Part Number: BMM-20480

4.0 out of 5 stars ( 12 )

Estimated Ship Date: Monday 2/9/2026

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Clutch Kit, Dual Friction, 1 1/8 in.-10-Spline, 11 in. Diameter Disc, Buick, Chevy, GMC, Pontiac, Kit

Part Number: CTF-DF735552

4.89 out of 5 stars ( 19 )

Estimated Ship Date: Monday 2/9/2026

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Clutch Kit, Street 650 Clutch Conversion Kits, Organic, Diaphragm, 1.125 in. Diameter Shaft, 26-Spline, 11 in. Diameter Disc, Dodge, Plymouth, Kit

Part Number: HAY-92-1102

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/9/2026

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Clutch Kit, Dual Friction, 1 1/8 in. Diameter Shaft, 10-Spline, 12 in. Diameter Disc, Chevy, GMC, Kit

Part Number: CTF-DF024909

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/9/2026

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Gear, Ring and Pinion, 4.30:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-G885430

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/9/2026

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Differential Carrier, Dura Grip Positraction, Clutch-type, 33-spline, Chevy, Dodge, GMC, Hummer, Ram, Each

Part Number: YGA-26025

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/9/2026

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Ring and Pinion Gears, 3.90:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: YGA-24159

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/9/2026

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Clutch Kit, Street/Strip, Organic, 1 1/8 in.-10-Spline, 10.5 in. Diameter Disc, Buick, Chevy, Pontiac, Kit

Part Number: HAY-85-103

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/9/2026

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CLUTCH

Part Number: CTF-KCFT240916

Not Yet Reviewed

Estimated Ship Date: Monday 2/9/2026

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