1978 PONTIAC FIREBIRD Transmission & Drivetrain

Differential Cover, Steel, Chrome, GM, 8.5 in., 10-Bolt, Kit

Part Number: MRG-9891

4.17 out of 5 stars ( 6 )

Estimated Ship Date: Monday 10/20/2025

Pressure Plate, Centerforce I, Diaphragm, 11 in. Disc Diameter, Buick, Chevy, Dodge, Ford, GMC, Oldsmobile, Pontiac, Each

Part Number: CTF-CF165552

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/20/2025

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Transmission Pan, Stock, Steel, Zinc Coated, GM TH350, Each

Part Number: MRG-9765ZMRG

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/20/2025

Ring and Pinion Kit

Part Number: RMG-GM75355

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025

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Flexplate, Gold Series, 153-Tooth, Internal Engine Balance, 2-Piece Rear Main Seal, SFI 29.1, TH350, Chevy, Small Block, GM V6, Each

Part Number: PQX-1835002

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/20/2025

Differential Carrier Cases, GM 8.5 in., 28/30 Spline, 2.73 and Up Ratio, Each

Part Number: YGA-20083

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Monday 10/20/2025

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U-Joint, Spicer 1350-1410 Style, Steel, Each

Part Number: YGA-42006

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/20/2025

Universal Joint, Light Duty, S44/GM 3RL, Steel, Buick, Cadillac, Chevy, Chrysler, Ford, Hummer, Isuzu, Jeep

Part Number: SDH-5-3147X

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Monday 10/20/2025

Wheel Bearing Seal, Each

Part Number: TMK-8871

4.82 out of 5 stars ( 22 )

Estimated Ship Date: Monday 10/20/2025

Gear, Ring and Pinion, 3.08:1 Ratio, GM, 8.5 in/8.6 in., Set

Part Number: MGR-GM10-308

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025

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Gear, Ring and Pinion, 4.88:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-G885488

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/20/2025

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Clutch Disc, Dual Friction, 1 1/8 in.- 26-Spline, 10.4 in. Disc, Buick, Chevy, Oldsmobile, Pontiac, V8, Each

Part Number: CTF-DF384161

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 10/20/2025

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Hardware, Rear Axle/Transmission Ventilator

Part Number: OER-15771000

4.05 out of 5 stars ( 22 )

Estimated Ship Date: Monday 10/20/2025

Pilot Bushing, 1.380 in. OD, 0.592 in. ID, 0.352 in. Width, Pontiac, Block, Each

Part Number: MCL-8-1380-1

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Monday 10/20/2025

Gear, Ring and Pinion, 4.56:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901671

2.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/20/2025

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Clutch Disc, Dual Friction, 1 1/8 in. Diameter Shaft, 10-Spline, 10.4 in. Diameter Disc, AMC, GM, Each

Part Number: CTF-DF383271

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Monday 10/20/2025

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Transmission Pan, Deep, Steel, Chrome, GM, TH250, TH350, Each

Part Number: BMM-30289

4.14 out of 5 stars ( 7 )

Estimated Ship Date: Monday 10/20/2025

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Gear, Ring and Pinion, 4.10:1 Ratio, GM, 7.5 in./7.625 in., 3 Series, Set

Part Number: MGR-G875410

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/20/2025

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Gear, Ring and Pinion, 3.73:1 Ratio, GM, 7.5in./7.625 in., 2 Series, Set

Part Number: MGR-G875373X

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 10/20/2025

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Transmission Bracket, Steel, Natural, Buick, Chevy, Oldsmobile, Pontiac, Kit

Part Number: BMM-20462

4.97 out of 5 stars ( 29 )

Estimated Ship Date: Monday 10/20/2025

Pressure Plate, Diaphragm-Style, 10.5 in. Disc Diameter, Buick, Chevy/Ford, GMC/Oldsmobile, Pontiac, Each

Part Number: MCL-360703

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025

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Gear, Ring and Pinion, 3.42:1 Ratio, GM, 7.5 in./7.625 in., 10-Bolt, 3 Series, Set

Part Number: RMG-4900451

4.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 10/20/2025

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Gear, Ring and Pinion, 3.23:1 Ratio, 1.625 in. Pinion, 30 Spline, 8.500 in. Ring Gear, GM 8.5/8.6 in., Set

Part Number: YGA-24493

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/20/2025

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Gear, Ring and Pinion, EXCel, 4.56:1 Ratio, GM, 7.5/7.625 in., 10-Bolt, Set

Part Number: RMG-GM75456

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/20/2025

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RING GEAR

Part Number: PIO-FRG-168S

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 10/20/2025