1973 PONTIAC FIREBIRD Transmission & Drivetrain

Gear, Ring and Pinion, 3.90:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-4900341

4.67 out of 5 stars ( 9 )

Estimated Ship Date: Monday 1/26/2026

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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: Monday 1/26/2026

Wheel Hub Dust Cap, Steel, Zinc, 2.094 in. Diameter, Buick, Cadillac, Chevy, GMC, Isuzu, Oldsmobile, Pontiac

Part Number: RNB-618-102

4.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 1/26/2026

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

Part Number: MGR-GM10-342

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/26/2026

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Sprag, Intermediate, Steel, GM, TH350, Each

Part Number: TCI-328910

Not Yet Reviewed

Estimated Ship Date: Monday 1/26/2026

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Cross Pin, GM, 10-Bolt, 8.5 in. Each

Part Number: MGR-14006401

Not Yet Reviewed

Estimated Ship Date: Monday 1/26/2026

Pinion Yoke, Steel, Spicer 1310 Type, 30-Spline, GM, 8.5 in., Kit

Part Number: YGA-41086

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 23, 2026 if ordered today

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Gear, Ring and Pinion, 2.73:1 Ratio, GM 8.5 in., Set

Part Number: RNB-697-812

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/26/2026

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U-Joints, Spicer 1310 To GM 3RL/S44/Mechanics 3/American Axle 1344, Steel, Each

Part Number: YGA-42013

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/26/2026

Clutch Kit, 5/6-Speed Conversion, Organic, 1 .125 in.-26-Spline, 11 in. Diameter Disc, Buick, Checker, Chevy, GMC, Pontiac, Oldsmobile, Kit

Part Number: HAY-83-1102

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/26/2026

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Differential Ring and Pinion; GM 8.5 10 Bolt - 3.73 Ratio

Part Number: SVL-2023695

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/26/2026

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Bushing Kit, Clutch Bellcrank Pivot, GM, A-Body, B-Body, F-Body, G-Body, X-Body, C/K Pickup, Kit

Part Number: GMK-4041951587S

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/26/2026

Clutch Kit, Powergrip, HD, Metallic, 1 1/8 in.- 26-Spline, 10.5 in. Disc, Chevy, 350, Kit

Part Number: RAM-98761HD

Not Yet Reviewed

Estimated Ship Date: Monday 1/26/2026

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

Part Number: SPZ-36211

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Differential Clutch, Steel Pack, Dura-Grip, Eaton, 18-Plate, GM, 8.875 in., Set

Part Number: YGA-16110

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 23, 2026 if ordered today

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Flywheel, Aluminum, 13.5 lbs., Chevy, Each

Part Number: FIZ-198681

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Mar 20, 2026 if ordered today

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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: Monday 1/26/2026

Spool, Full Size, Steel, 28-Spline, 10-Bolt, GM 8.5 in., Each

Part Number: MGR-FS10-28

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/26/2026

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Pinion Shims, Steel, Kit

Part Number: YGA-55008

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/26/2026

Pinion Nut, Steel, Each

Part Number: YGA-33152

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/26/2026

Crate Axle, 70-81 GM Camaro/F-Body Centurion 9-Inch, Black PC, 31-Spline, 3.70 Ratio, Currie Twin Track, Wilwood 11" Dynapro Black Calipers

Part Number: CUR-CR-GF337TWAB

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Bushing, Pilot, Bronze, Buick, Olds, Pontiac, Jeep, Eagle, Chevy, GMC, Each

Part Number: SKF-B656

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/26/2026

Differential Yoke, Steel, 1350, 30 Spline, GM 8.5 in. Kit

Part Number: RMG-96-2521K

1.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/26/2026

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Gear, Ring and Pinion, EXCel, 3.08:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: RMG-GM85308

Not Yet Reviewed

Estimated Ship Date: Monday 1/26/2026

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Shifter Cable, Automatic Transmission, Chevy, Pontiac, Each

Part Number: OER-498467

3.63 out of 5 stars ( 8 )

Estimated Ship Date: Monday 1/26/2026