1978 PONTIAC FIREBIRD Transmission & Drivetrain

Ring and Pinion Installation Kit, GM, 8.5 in., 8.6 in., 10-Bolt, Spline Pinion, Kit

Part Number: RMG-8310211

4.25 out of 5 stars ( 40 )

Estimated Ship Date: Monday 10/6/2025

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Clutch Kit, Organic Disc, 11 in. Diameter, 1-1/8 in. Shaft, 26-Spline, Buick, Chevy, Olds, Pontiac, Kit

Part Number: SUM-700808

4.68 out of 5 stars ( 22 )

Estimated Ship Date: Monday 10/6/2025

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Clutch Kit, Dual Friction, 1 1/8 in. Diameter Shaft, 26-Spline, 11 in. Diameter Disc, GM, Kit

Part Number: CTF-DF148552

4.75 out of 5 stars ( 20 )

Estimated Ship Date: Monday 10/6/2025

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Gear, Ring and Pinion, 3.73 Ratio, GM, 8.5 in/8.6 in., Set

Part Number: MGR-GM10-373

4.74 out of 5 stars ( 19 )

Estimated Ship Date: Monday 10/6/2025

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Dura Grip Positraction Carrier, Traction-Loc, GM 7.5/7.6 in., 26 Spline, 3.23 Up Ratio, Each

Part Number: YGA-26017

4.4 out of 5 stars ( 5 )

Estimated Ship Date: Monday 10/6/2025

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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 10/6/2025

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Automatic Transmission, Remanufactured, Forward Shift Pattern, Automatic/Manual Valve Body, Buick, Oldsmobile, Pontiac, TH350

Part Number: TCI-311105

Not Yet Reviewed

Estimated Ship Date: Monday 10/6/2025

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Torque Converter, Nitrous Holeshot, 3,500-3,800 rpm Stall Range, 30-spline, THM350/THM400, Each

Part Number: BMM-20485

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/6/2025

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Gear, Ring and Pinion, 3.73:1 Ratio, 1.625 in. Pinion, 30-Spline, GM 8.5/8.6 in., Set

Part Number: YGA-24158

4.1 out of 5 stars ( 10 )

Estimated Ship Date: Monday 10/6/2025

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Ring and Pinion Installation Kit, Master Kit, GM 8.5 in., Kit

Part Number: MGR-R10RMK

4.29 out of 5 stars ( 17 )

Estimated Ship Date: Monday 10/6/2025

Ring and Pinion Gears, 4.11:1 Ratio, 30-spline, Standard Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: MGR-GM10-411A

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 10/6/2025

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Gear, Ring and Pinion, 3.73:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-4900411

4.47 out of 5 stars ( 19 )

Estimated Ship Date: Monday 10/6/2025

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Shifter Installation Kit, Street Super Shifter, Buick, Chevy, Oldsmobile, Pontiac, Kit

Part Number: HUU-3738616

4.3 out of 5 stars ( 10 )

Estimated Ship Date: Monday 10/6/2025

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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 10/6/2025

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

Part Number: LOK-KD-2350HT

4.89 out of 5 stars ( 38 )

Estimated Ship Date: Monday 10/6/2025

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Bellhousing, Manual, Steel, Chevy, Big/Small Block, Each

Part Number: LAK-15000LKW

4.79 out of 5 stars ( 24 )

Estimated Ship Date: Monday 10/6/2025

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Transmission Dipstick, Braided Stainless Steel Housing, Black Handle, GM, TH350, TH400, Each

Part Number: LOK-XTD3350400FM

4.89 out of 5 stars ( 18 )

Estimated Ship Date: Monday 10/6/2025

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Ring and Pinion Gears, EXCel, 4.10:1 Ratio, 30-spline, Standard Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: RMG-GM85410

4.0 out of 5 stars ( 8 )

Estimated Ship Date: Monday 10/6/2025

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Differential Cover, Cap Support, Aluminum, Black, Perfect Launch Logo, GM, 8.2 in., 8.5 in., Each

Part Number: PRO-66668

4.29 out of 5 stars ( 48 )

Estimated Ship Date: Monday 10/6/2025

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Ring and Pinion Gears, 3.42:1 Ratio, 30-spline, Standard Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: MGR-GM10-342A

4.5 out of 5 stars ( 16 )

Estimated Ship Date: Monday 10/6/2025

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Clutch Kit, RXT, 1 1/8 in. x 26-Spline, 9.688 in. Diameter Disc, Chevy, V8, Kit

Part Number: MCL-6921-07

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/6/2025

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Shifter Installation Kit, Competition Plus, Borg Warner Super T-10, Code 454, Chevy, Pontiac, Kit

Part Number: HUU-3738609

4.63 out of 5 stars ( 8 )

Estimated Ship Date: Monday 10/6/2025

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Automatic Transmission Direct Drum, Iron, GM, 36 Element Sprag Assembly, TH350, Kit

Part Number: TCI-327900

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Monday 10/6/2025

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Transmission Pan, Deep, Aluminum, Natural, GM, TH250, TH350, Each

Part Number: BMM-30280

4.89 out of 5 stars ( 36 )

Estimated Ship Date: Monday 10/6/2025

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Automatic Shifter, Quarter Stick, Chevy, Forward/Reverse Pattern, Powerglide, TH250, TH350, TH375, TH400, Each

Part Number: HUU-3160001

4.88 out of 5 stars ( 8 )

Estimated Ship Date: Monday 10/6/2025

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