1978 PONTIAC FIREBIRD Transmission & Drivetrain

Gear, Ring and Pinion, 4.88:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901691

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Monday 7/28/2025

• Free Shipping

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 7/28/2025

• Free Shipping

Flexplate Dust Shield, Steel, Chrome, Chevy, 700R4, Each

Part Number: MRG-5135

2.43 out of 5 stars ( 7 )

Estimated Ship Date: Monday 7/28/2025

Clutch Fork, Steel, Zinc Chromate, Buick, Chevy, GMC, Oldsmobile, Pontiac, L6, V6, V8, Each

Part Number: LAK-15500

3.24 out of 5 stars ( 21 )

Estimated Ship Date: Monday 7/28/2025

Spartan Differential Locker, GM 8.5 in., 28-spline Axle, Buick, Oldsmobile, Pontiac, Chevy, GMC, Each

Part Number: SPZ-17040

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Aug 14, 2025 if ordered today

• Free Shipping
• Special Order

Flexplate, Performance, Neutral Balance,153 Tooth, Chevy, V8, Each

Part Number: HAY-10-012

Not Yet Reviewed

Estimated Ship Date: Monday 7/28/2025

• Free Shipping

Differential Cover, 10-bolt, Aluminum, Polished, GM 8.2 in., GM 8.5 in., GM 8.6 in., Each

Part Number: YGA-32030

3.5 out of 5 stars ( 8 )

Estimated Ship Date: Monday 7/28/2025

• Free Shipping

Differential Parts Kit; Open Differential; Includes 28-Spline Side And Pinion Gears/Washers/Pinion Shaft /Bolt

Part Number: MGR-GM10-BI

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 7/28/2025

Hardware, Rear Axle/Transmission Ventilator

Part Number: OER-15771000

4.14 out of 5 stars ( 21 )

Estimated Ship Date: Monday 7/28/2025

Flexplate, Gold Series, 153-Tooth, Internal Engine Balance, 2-Piece Rear Main Seal, SFI 29.1, TH350, Chevy, Small Block, GM V6, Each

Part Number: PQX-1835002

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 7/28/2025

Clutch Master Cylinder, Direct Fit Hydraulic Conversion, Braided Stainless Steel Hose, Quick Disconnect Fitting, Chevy, Pontiac, Kit

Part Number: MCL-1434005QD

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 7/28/2025

• Free Shipping

Gear, Ring and Pinion, 4.10:1 Ratio, GM, 7.5 in./7.625 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6903221

4.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 7/28/2025

• Free Shipping

Throwout Bearing Conversion, Hydraulic, Hydramax, Chevrolet, Kit

Part Number: AWR-HMGM40016

Not Yet Reviewed

Estimated Ship Date: Sep 22, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Universal Joint, Super Strength, 1344 Style, Solid, Steel, Each

Part Number: MOG-234

4.42 out of 5 stars ( 12 )

Estimated Ship Date: Monday 7/28/2025

Bearing, Ball, Each

Part Number: NTL-614018

3.25 out of 5 stars ( 4 )

Estimated Ship Date: Monday 7/28/2025

Gear, Ring and Pinion, 5.13:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901711

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 7/28/2025

• Free Shipping

Flywheel, Aluminum, 13.5 lbs., Chevy, Each

Part Number: FIZ-198661

Not Yet Reviewed

Estimated Ship Date: Aug 13, 2025 if ordered today

• Free Shipping
• Special Order

Gear, Ring and Pinion, 4.10:1 Ratio, GM, 7.5 in./7.625 in., 3 Series, Set

Part Number: MGR-G875410

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 7/28/2025

• Free Shipping

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

Part Number: MGR-G885308

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Aug 18, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Axle Seal, Rear Axle Shaft Size-1.399 in., Seal O.D-.2.296, Seal Width-0.460 in., Bidirectional, Each

Part Number: TMK-8660S

5.0 out of 5 stars ( 12 )

Estimated Ship Date: Monday 7/28/2025

Shifter Cable, Black Jacket, 32.00 in. Length, TH350, TH400, Console, Chevy, Pontiac, Each

Part Number: ATP-Y117

4.6 out of 5 stars ( 25 )

Estimated Ship Date: Monday 7/28/2025

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 )

Estimated Ship Date: Monday 7/28/2025

• Free Shipping

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 7/28/2025

• Free Shipping

Yoke, Differential Location, 27-spline Inner, Steel, Mechanics 3R U-joint Style, Rear, GM 7.5 in., GM 7.6 in.

Part Number: YGA-41088

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 7/28/2025

• Free Shipping

Universal Joint, Super Strength, 1344 Style, Greasable, Steel, Each

Part Number: MOG-235

4.34 out of 5 stars ( 44 )

Estimated Ship Date: Monday 7/28/2025