1978 PONTIAC FIREBIRD Transmission & Drivetrain

Gear, Ring and Pinion, 3.90:1 Ratio, GM, 7.5 in./7.625 in., Standard Rotation, Set

Part Number: MGR-G875390

4.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/6/2025

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

Part Number: RMG-78-1028-1

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Monday 10/6/2025

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Universal Joint, Steel, Buick, Cadillac, Chevrolet, Ford, GMC, Oldsmobile, Pontiac, Each

Part Number: ADO-45U0103

Not Yet Reviewed

Estimated Ship Date: Monday 10/6/2025

Gear, Ring and Pinion, EXCel, 4.56:1 Ratio, GM, 7.5/7.625 in., 10-Bolt, Set

Part Number: RMG-GM75456

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/6/2025

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Throwout Bearing, 1 1/8 in. Shaft Diameter, 1.270 in. Overall Length, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: RAM-488

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/6/2025

Ring and Pinion Gears, 3.08:1 Ratio, 27-spline, Standard Rotation, GM 7.5 in., GM 7.625 in., Set

Part Number: YGA-24476

Not Yet Reviewed

Estimated Ship Date: Oct 31, 2025 if ordered today

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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: Monday 10/6/2025

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: Monday 10/6/2025

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 10/6/2025

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

Part Number: MGR-G875373X

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 10/6/2025

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Torque Converters, Twister 3/4 Race, 1.703 in. Crank Pilot Diameter, 30-spline, 9.600 in. Diameter, TH350, 2,400 rpm Advertised Flash Stall, Each

Part Number: HAY-97-1B24Q

Not Yet Reviewed

Estimated Ship Date: Monday 10/6/2025

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

Part Number: MGR-GM10-390

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/6/2025

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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 10/6/2025

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Pinion Nut, Steel, Each

Part Number: YGA-33152

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 10/6/2025

Differential Shims, Carrier, Steel, GM, 8.5 in., 8.625 in., Kit

Part Number: MGR-GM10MSK

Not Yet Reviewed

Estimated Ship Date: Monday 10/6/2025

Clutch Kit, Street Extreme, 1.125 in. - 10-spline, Ceramic Disc, Pressure Plate, Buick, Chevy, Pontiac, Kit

Part Number: MCL-75317

1.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/6/2025

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

Part Number: RMG-831021M

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 10/6/2025

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Gear, Ring and Pinion, 3.08:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-4900171

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/6/2025

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U-Joint, Lifetime Series, Spicer 1350 Style, Steel, AMC, Buick, Cadillac, Chevy, Chrysler, Dodge, Ford, GMC, Jeep, Mercury, Olds, Pontiac, Each

Part Number: YGA-42021

Not Yet Reviewed

Estimated Ship Date: Monday 10/6/2025

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: Monday 10/6/2025

Gear, Ring and Pinion, 3.08:1 Ratio, GM, 7.5 in., Set

Part Number: MGR-GM75-308

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Oct 23, 2025 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 10/6/2025

Differential Cover, 10-bolt, Steel, Chrome, GM 7.5 in., GM 7.625 in., Each

Part Number: YGA-32014

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/6/2025

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 7.5 in., Set

Part Number: MGR-GM75-373

Not Yet Reviewed

Estimated Ship Date: Monday 10/6/2025

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Cable Bracket, Replacement, Used With Bandit Shifters, GM, TH250/TH350/TH375/TH400/2004R/700R4, Each

Part Number: BMM-30498

3.89 out of 5 stars ( 9 )

Estimated Ship Date: Monday 10/6/2025