1978 PONTIAC FIREBIRD Transmission & Drivetrain

Ring and Pinion Gears and Installation Kit, 8.5" GM 3.73 REAR R&P GEAR/ INSTALL KIT PACKAGE with AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12622

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Estimated Ship Date: Nov 19, 2025 if ordered today

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Gear, Ring and Pinion, 4.30:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: MGR-GM10-430

1.0 out of 5 stars ( 1 )

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

Part Number: OER-1262620

3.89 out of 5 stars ( 9 )

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System High Flow Filter GM TH350

Part Number: TCI-328505

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Estimated Ship Date: Dec 1, 2025 if ordered today

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MASTER SHIM KIT GM 7.5

Part Number: MGR-GM7-5MSK

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Universal Joint, Steel, GM, Mopar, Ford, Isuzu, Jeep, Lincoln, Mercury, Saab, Each

Part Number: ADO-45U0108

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Clutch Disc, Organic, 1 1/8 in. Diameter Shaft, 26-Spline, 11 in. Diameter Disc, Chevy, GMC/Pontiac, Each

Part Number: RAM-310

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Ball bearing, single row, snap ring, no shield

Part Number: SKF-307-NRJ

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Torque Converters, Twister Full Race, 4,200-4,500 rpm Stall Speed Range, 30-spline, 9.60 in. Diameter, 10.750 in. Bolt Circle, THM350, Chevy, Each

Part Number: HAY-97-1B42F

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Gear, Ring and Pinion, 3.73:1 Ratio, 1.438 in. Pinion, 27 Spline, 7.500 in. Ring Gear, GM 7.5/7.6 in., Set

Part Number: YGA-24146

5.0 out of 5 stars ( 1 )

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Ring and Pinion Installation Kit, GM, 10-Bolt, 8.5 in. Diameter Ring Gear, 30-Spline Pinion, Kit

Part Number: RMG-831021B

2.67 out of 5 stars ( 3 )

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Gear, Ring and Pinion, 3.73:1 Ratio, GM, 7.5 in./7.625 in., 10-Bolt, 2 Series, Set

Part Number: RMG-4900071

3.0 out of 5 stars ( 2 )

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

Part Number: BMM-30499

4.5 out of 5 stars ( 6 )

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Switch - Neutral/Backup

Part Number: SMP-NS15

5.0 out of 5 stars ( 3 )

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Bellcrank Seals, Clutch Linkage Components, Felt, Buick, Chevy, Oldsmobile, Pontiac, Pair

Part Number: AMD-W-686B

4.0 out of 5 stars ( 1 )

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Differential, Eaton Detroit Locker, 28-Spline, GM, 8.5 in., 3-Series, Each

Part Number: ETN-187C149A

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Estimated Ship Date: Oct 27, 2025 if ordered today

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Ring and Pinion

Part Number: MGR-GM75-323

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

Part Number: LOK-KD-2350TP

5.0 out of 5 stars ( 3 )

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Ring and Pinion Gears, 2.73:1 Ratio, 27-spline, Standard Rotation, GM 7.5 in., GM 7.625 in., Set

Part Number: YGA-24475

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Estimated Ship Date: Nov 19, 2025 if ordered today

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Clutch Fork Return Spring, Chevy, Pontiac, Each

Part Number: OER-332521

3.0 out of 5 stars ( 2 )

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Carrier Shims, Super, Steel, Set of 18

Part Number: YGA-16042

3.11 out of 5 stars ( 9 )

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Clutch Kit, Street 650 Clutch Conversion, Performance, Single Disc, 1.125 in. - 10-spline, 11.000 in. Sintered Metallic Disc Diameter, Chevy, Jeep

Part Number: HAY-92-1004

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Wheel Bearings, GM Genuine Parts, 1.250 in. Bore Diameter, Steel, 2.328 in. O.D., 0.625 in. Width, BMW, Buick, Chevy, Chrysler, Dodge, Ford, GMC, Each

Part Number: ADO-A6

5.0 out of 5 stars ( 1 )

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Throwout Bearing, Diaphragm, 1.125 in. Shaft Diameter, Chevy, Buick, GMC, Each

Part Number: ACL-RB466

5.0 out of 5 stars ( 1 )

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1965-83 Buick, Chevy, Pontiac, Olds; Clutch Fork Ball Stud; Each

Part Number: OER-3729000

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