1978 PONTIAC FIREBIRD Transmission & Drivetrain

Yukon Dura Grip case, GM 7.5 & 7.625", 3.23 & up

Part Number: YGA-20106

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Estimated Ship Date: Nov 14, 2025 if ordered today

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Gear, Ring and Pinion, 3.90:1 Ratio, GM 7.5 in., GM 7.625 in., 10-bolt, Set

Part Number: RMG-49-0284-1

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Estimated Ship Date: Nov 4, 2025 if ordered today

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Flywheel, PQx, Billet Aluminum, 153-tooth, 13.000 lbs., SFI 1.1, Neutral Engine Balance, Chevy, Each

Part Number: PQX-1932700

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Estimated Ship Date: Nov 28, 2025 if ordered today

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Manual Transmission Bearing and Seal Overhaul Kit, Manual Transmission Bearing and Seal Overhaul Kit

Part Number: SPZ-ZMBK115AWS

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Estimated Ship Date: Oct 31, 2025 if ordered today

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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: Nov 14, 2025 if ordered today

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Ring and Pinion Installation Kit, Basic, GM 8.5 in., Front/Rear, Kit

Part Number: MGR-R10RTPK

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Estimated Ship Date: Nov 6, 2025 if ordered 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

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: Nov 14, 2025 if ordered today

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Shifter, White Lightning, Short Throw, Billet Aluminum, Tremec TKO 500/TKO 600, 2.73 in. Offset, Kit

Part Number: AWR-SHWL10100SR4

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Estimated Ship Date: Dec 15, 2025 if ordered today

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Differential Carrier Bearing, Steel, Each

Part Number: NTL-LM501349

1.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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

Part Number: SPZ-36215

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Estimated Ship Date: Oct 31, 2025 if ordered today

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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

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Estimated Ship Date: Oct 31, 2025 if ordered today

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Yukon Mechanics 3R U/Joint. 2.556" snap ring span, 1.125" cap diameter. Inside snap ring.

Part Number: YGA-42014

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Estimated Ship Date: Today

Differential Ring And Pinion Set

Part Number: RNB-697-303

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Pressure Plate, Centerforce I, Diaphragm, 10.4 in. Disc Diameter, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: CTF-CF361675

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Nov 5, 2025 if ordered today

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Torque Conv. Bolt Kit

Part Number: PIO-859035

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Ring and Pinion Gears, 3.73:1 Ratio, 27-spline, Standard Ring Gear Rotation, GM 7.5 in., GM 7.625 in., Set

Part Number: SPZ-36197

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 3, 2025 if ordered today

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Ring and Pinion Gear, 4.88:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36219

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Oct 31, 2025 if ordered today

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Ring and Pinion Gear, 5.13:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36220

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Estimated Ship Date: Oct 30, 2025 if ordered today

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Master Axle Overhaul Bearing Kit; GM 8.5

Part Number: SDH-10024044

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Estimated Ship Date: Nov 17, 2025 if ordered today

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Clutch Kit, Ceramic, 1 1/8 in. Diameter Shaft, 10-Spline, 11 in. Diameter Disc, Kit

Part Number: ZZZ-30015

3.5 out of 5 stars ( 4 )

Estimated Ship Date: Jan 12, 2026 if ordered today

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Steel Plates Powerglide Reverse .070 (6 ea.) Kolene-Treated

Part Number: TCI-724102

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Estimated Ship Date: Nov 24, 2025 if ordered today

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Gear, Ring and Pinion, 3.73:1 Ratio, GM 8.5/8.625 in., Set

Part Number: RNB-697-301

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Estimated Ship Date: Nov 3, 2025 if ordered today

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

Part Number: RAM-980

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Estimated Ship Date: Today

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Clutch Guide, Dura Grip, Chrysler 9.25 in., GM 8.5 in., 8.6 in., 8.875 in., Each

Part Number: YGA-33352

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Estimated Ship Date: Today