1978 PONTIAC FIREBIRD Transmission & Drivetrain

Ring and Pinion Gears, 4.56:1 Ratio, 30-spline, Standard Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: MGR-GM10-456A

4.46 out of 5 stars ( 13 )

Estimated Ship Date: Monday 10/20/2025

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Transmission Bracket, Steel, Natural, Chevy TH400/TH350/TH250/200-4R/700R4/TH350C, Kit

Part Number: BMM-35498

4.83 out of 5 stars ( 60 )

Estimated Ship Date: Monday 10/20/2025

Gear, Ring and Pinion, 4.10:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901651

4.6 out of 5 stars ( 10 )

Estimated Ship Date: Monday 10/20/2025

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Combo, Hurst, Shifter, Competition Plus, Installation Kit, Chevy, Pontiac, Super T-10, Kit

Part Number: CMB-13-0077

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/20/2025

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Automatic Shifter, Quarter Stick, Chevy, TH250/TH350/TH375/TH400, Each

Part Number: HUU-3160006

4.82 out of 5 stars ( 11 )

Estimated Ship Date: Monday 10/20/2025

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Clutch Kit, Concept 10.5 Dual-Disc Clutch, 1.125 in. - 26-spline, Metallic Disc, Pressure Plate, Chevy, Small Block, Kit

Part Number: RAM-50-2125N

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025

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Bellhousing, Chevy to Muncie/BW T-10/Saginaw, Steel, Each

Part Number: LAK-77-150

4.71 out of 5 stars ( 14 )

Estimated Ship Date: Monday 10/20/2025

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Shifter Conversion Kit, Shifter Cable Bracket, Chevy, Pontiac, Kit

Part Number: SIW-SC2262

4.69 out of 5 stars ( 13 )

Estimated Ship Date: Monday 10/20/2025

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Differential Carrier, Positraction, Nodular Iron, GM 7.5/7.6 in., 26 Spline, 3.23 Up Ratio, Each

Part Number: SUM-730958

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Monday 10/20/2025

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Clutch Master Cylinder, Firewall Kit Only, Adjustable, Cast Aluminum, Black, -4 AN Connection, Chevy, Kit

Part Number: MCL-1434005

2.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 10/20/2025

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Valve Body, Performance, Full Manual, Reverse Pattern, Chevy, TH350, Each

Part Number: TCI-321115

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 10/20/2025

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Flexplate, Gold Series, 168-Tooth, Internal Engine Balance, 2-Piece Rear Main Seal, SFI 29.1, TH350, TH400, TH700-R4, Chevy, Small Block, GM V6, Each

Part Number: PQX-1835001

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/20/2025

Clutch Kits, Street 450 Clutch Conversion Kits, 1.125 in. - 10-spline, Single Organic Disc, 10.500 in. Diameter, Buick, Chevy, Olds, Pontiac, Kit

Part Number: HAY-91-1002

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/20/2025

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Clutch Kit, Super StreetPro, 1.125 in. - 10-spline, Organic/Ceramic Disc, 12.00 in. Disc Diameter, Pressure Plate, Buick, Chevy, Olds, Pontiac, Kit

Part Number: MCL-75228

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/20/2025

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Gear, Ring and Pinion, EXCel, 3.73:1 Ratio, GM, 7.5/7.625 in., 10-Bolt, Set

Part Number: RMG-GM75373OE

4.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 10/20/2025

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Clutch Master Cylinder, Hydramax, Cast Aluminum, Black, Buick, Chevy, GMC, Oldsmobile, Pontiac, Kit

Part Number: AWR-HMGM30001SR

2.88 out of 5 stars ( 8 )

Estimated Ship Date: Monday 10/20/2025

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Automatic Transmission Kickdown Cable, Hi-Tech, Black Vinyl, Natural Aluminum Fittings, GM, TH350, Kit

Part Number: LOK-KD-2350U

4.52 out of 5 stars ( 33 )

Estimated Ship Date: Monday 10/20/2025

Gear, Ring and Pinion, 3.42:1 Ratio, 1.625 in. Pinion, 30 Spline, 8.500 in. Ring Gear, GM 8.5/8.6 in., Set

Part Number: YGA-24157

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/20/2025

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Transmission Dipstick, Braided Stainless Steel, Natural, Firewall Mount, TH350, TH400, Each

Part Number: LOK-TD350400FM36

4.79 out of 5 stars ( 38 )

Estimated Ship Date: Monday 10/20/2025

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Bearing, Pinion, 1.625 in. Inside Diameter, Each

Part Number: TMK-M802048

4.66 out of 5 stars ( 29 )

Estimated Ship Date: Monday 10/20/2025

Differential Carrier, Positraction, Nodular Iron, GM 7.5/7.6 in., 28 Spline, 3.23 Up Ratio, Each

Part Number: SUM-730960

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/20/2025

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Clutch Kit, Muscle Car, Organic, 1 1/8 in.- 10-Spline, 10.5 in. Disc, Buick, Chevy, Oldsmobile, Pontiac, Kit

Part Number: RAM-92760

4.72 out of 5 stars ( 18 )

Estimated Ship Date: Monday 10/20/2025

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Axle C-Clip, Steel, Natural, Each

Part Number: YGA-33083

4.89 out of 5 stars ( 38 )

Estimated Ship Date: Monday 10/20/2025

Gear, Ring and Pinion, 4.11:1 Ratio, 1.625 in. Pinion, 30 Spline, 8.500 in. Ring Gear, GM 8.5/8.6 in., Set

Part Number: YGA-24160

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 10/20/2025

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

Part Number: CTF-CFT165552

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/20/2025

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