1978 PONTIAC FIREBIRD Transmission & Drivetrain

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

Part Number: RMG-GM85456

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Transmission Dipstick, Steel, Chrome, TH350, Each

Part Number: MRG-9764

3.6 out of 5 stars ( 5 )

Estimated Ship Date: Today

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: Today

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Differential Cover, 10-bolt, Steel, Natural, GM 8.2 in., GM 8.5 in., GM 8.6 in., Each

Part Number: YGA-32332

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Today

Clutch Pushrod, Lower, Adjustable, GM, A-Body/F-Body/X-Body, Each

Part Number: GMK-4030951648S

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

Ring and Pinion Gear Installation Kit, Bearing Overhaul, 30 Spline, Large Journal, GM 8.5 in., Kit

Part Number: YGA-11069

Not Yet Reviewed

Estimated Ship Date: Nov 21, 2025 if ordered today

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Backup Light Switch, Buick, Chevy, Oldsmobile, Pontiac, Manual, Each

Part Number: AWW-03943657

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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: Today

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Kickdown Bracket Only, Complete Kit Part # LOK-KD-2350U, Each

Part Number: LOK-KDB-4350

4.5 out of 5 stars ( 6 )

Estimated Ship Date: Today

Axle Shaft, OEM Replacement, C-clip, 1541H Alloy Steel, 28-spline Inner, 30.125 in. Length, Each

Part Number: MGR-MG1015

2.5 out of 5 stars ( 2 )

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Pin Stud Assembly, Shifter Replacement Part, Chevy, Pontiac, Kit

Part Number: AMD-W-682

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Detent Cable, Adjustable, 28-48 in. Length, Buick, Cadillac, Chevy, Oldsmobile, Pontiac, Each

Part Number: ATP-Y754

4.14 out of 5 stars ( 14 )

Estimated Ship Date: Today

Flywheel Bolts, Heat Treated Steel, 12 point, 7/16 in.- 20 RH, 1.00 in. length, Chevy, Ford, Set of 6

Part Number: PQX-1001102

Not Yet Reviewed

Estimated Ship Date: Today

Ring and Pinion Gear Installation Kit, Bearing Overhaul, 30 Spline, GM 8.5 in., Kit

Part Number: YGA-11067

Not Yet Reviewed

Estimated Ship Date: Nov 21, 2025 if ordered today

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

Part Number: CTF-DF161739

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Automatic Transmission Lever, Steel, Natural, Each

Part Number: HUU-1050180

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 7.5 in./7.625 in., 10-Bolt, 3 Series, Set

Part Number: RMG-4900461

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Sprag, Intermediate, Steel, GM, TH350, Each

Part Number: TCI-328910

Not Yet Reviewed

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Bellhousing, Manual, Steel, Oldsmobile, Pontiac, Each

Part Number: LAK-15100

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 21, 2025 if ordered today

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Wheel Bearing, GM Genuine Part, for use on Honda®, AMC, Buick, Cadillac, Chevy, Dodge, Ford, GMC, Isuzu, Jeep, Mercury, Olds, Plymouth, Pontiac, Each

Part Number: ADO-5707

Not Yet Reviewed

Estimated Ship Date: Today

Performance Mini Spool (GM 8.5 - 30 Spline)

Part Number: SDH-10015388

Not Yet Reviewed

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Pilot Bearing, Roller, Steel, AMC, Buick, Chevy, GMC, Jeep, Oldsmobile, Pontiac, Studebaker, Each

Part Number: TMK-PB656HD

4.5 out of 5 stars ( 8 )

Estimated Ship Date: Today

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 7.5 in./7.625 in., 3 Series, Set

Part Number: MGR-G875373

4.45 out of 5 stars ( 11 )

Estimated Ship Date: Today

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Differential Shims, Pinion Shim Type, Steel, Set

Part Number: MGR-1100

3.86 out of 5 stars ( 7 )

Estimated Ship Date: Today

Throwout Bearing, 1 1/8 in. Shaft Diameter, 1.60 in. Overall Length, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: RAM-488L

1.0 out of 5 stars ( 2 )

Estimated Ship Date: Today