1978 PONTIAC FIREBIRD Transmission & Drivetrain

Gear, Ring and Pinion, 3.08:1 Ratio, GM, 7.5 in., Set

Part Number: MGR-GM75-308

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Nov 3, 2025 if ordered today

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Gear, Ring and Pinion, 4.88:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901691

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Monday 10/13/2025

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Differential Clutch, Steel Pack, Rear, Posi, GM, 8.875 in., Set

Part Number: YGA-16041

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Estimated Ship Date: Nov 11, 2025 if ordered today

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Gear, Ring and Pinion, 2.73:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-GM10-273

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/13/2025

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Flexplate, 153 Tooth, Internal Balance, 2-Piece Rear Main Seal, Steel, Chevy, Each

Part Number: QTI-RM-922

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Monday 10/13/2025

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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 3, 2025 if ordered today

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Brake Rotor Dust Cap, Wheel/Hub, Steel, Chrome, 2.187 in. Diameter, Pair

Part Number: MRG-2486

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 10/13/2025

Clutch Fork, Steel, Black, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: ATP-ZA100

4.44 out of 5 stars ( 9 )

Estimated Ship Date: Monday 10/13/2025

Clutch Kit, Dual Friction, 1 1/8 in. Diameter Shaft, 26-Spline, 10.4 in. Diameter Disc, GM, Kit

Part Number: CTF-DF161675

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Monday 10/13/2025

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Flywheel, Steel, 166-Tooth, 30 lb., Internal Engine Balance, Pontiac, V8, Each

Part Number: HAY-13-130

4.56 out of 5 stars ( 9 )

Estimated Ship Date: Nov 3, 2025 if ordered today

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Throwout Bearing, 1300 Series, Hydraulic, Bolt-on Design, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: MCL-1327

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Estimated Ship Date: Monday 10/13/2025

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Clutch Kit, 5/6-Speed Conversion, Organic, 1 .125 in.-26-Spline, 10.5 in. Diameter Disc, Buick, Checker, Chevy, GMC, Pontiac, Oldsmobile, Kit

Part Number: HAY-83-1100

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Estimated Ship Date: Nov 3, 2025 if ordered today

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U-Joint, Spicer 1310, Steel, Each

Part Number: YGA-42003

3.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 10/13/2025

Automatic Transmission Kickdown Cable, Hi-Tech, Natural Braided Stainless Steel, Polished Aluminum Fittings, GM, TH350, Kit

Part Number: LOK-KDP-2350HT

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/13/2025

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Differential Carrier Bearings, Standard Replacement, Includes Cup, 1.625 in. Bore, AMC, GM, Mopar, Jeep, International, Studebaker, Hummer, Each

Part Number: TMK-SET69

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/13/2025

Pressure Plate, Diaphragm-Style, 11 in. Disc Diameter, Chevy, GMC/Oldsmobile, Pontiac, Each

Part Number: RAM-402

1.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/13/2025

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Gear, Ring and Pinion, 3.23:1 Ratio, GM 8.5 in., Set

Part Number: RNB-697-810

Not Yet Reviewed

Estimated Ship Date: Monday 10/13/2025

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automatic transmission pan fasteners, Pioneer, Steel, Natural, GM, Each

Part Number: PIO-859034

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/13/2025

Ring and Pinion Gears, 4.30:1 Ratio, 27-spline, Standard Ring Gear Rotation, GM 7.5 in., Set

Part Number: YGA-24482

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Ring & Pinion Gear, 5.38 Ratio, GM, 8.5 in./8.6 in., Set

Part Number: YGA-24494

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Clutch Fork Pivot Ball, Steel, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: GMK-4010-951-652

4.29 out of 5 stars ( 7 )

Estimated Ship Date: Monday 10/13/2025

Differential Cover, Aluminum Girdle Cover, Natural, 10-bolt, GM 8.5 in., GM 8.6 in., Each

Part Number: YGA-32121

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/13/2025

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Flywheels, Billet Aluminum, 168-tooth, 14 lbs., Internal Engine Balance, SFI 1.1, Chevy, Each

Part Number: HAY-20-130HYS

Not Yet Reviewed

Estimated Ship Date: Monday 10/13/2025

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Differential, No-Slip Traction System, 28-Spline, GM, 8.5 in., Each

Part Number: PWT-9207852805

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 10/13/2025

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Transmission Kickdown Cable, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: OER-1262620

3.89 out of 5 stars ( 9 )

Estimated Ship Date: Monday 10/13/2025