1978 PONTIAC FIREBIRD Transmission & Drivetrain

Clutch Kit, Organic/Carbon Composite, 1 1/8 in. Diameter Shaft, 26-Spline, 10.4 in. Diameter Disc, GM, Circle Track, Kit

Part Number: ZZZ-30043S

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Automatic Transmission, Circlematic, Forward Shift Pattern, Full Manual Valve Body, Stock Pan, Chevy, THM350, Each

Part Number: TCI-312002

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Estimated Ship Date: Nov 24, 2025 if ordered today

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Differential Carrier Gear Kit

Part Number: RMG-XL-4048

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Axle Shaft, Direct Fit, 1541H Alloy Steel, 28-Spline, 30.125 in. Length, Chevy, Pontiac, Each

Part Number: MGR-MG27122

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Estimated Ship Date: Nov 4, 2025 if ordered today

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Ring and Pinion Gears and Installation Kit, 8.5" GM 4.56 REAR R&P GEAR/ INSTALL KIT PACKAGE with AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12625

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Estimated Ship Date: Nov 14, 2025 if ordered today

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Ring and Pinion Gears and Installation Kit, 8.5" GM 4.56 REAR R&P GEAR/ INSTALL KIT PACKAGE with 28spl POSI & AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12631

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Estimated Ship Date: Nov 14, 2025 if ordered today

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Differential Ring and Pinion Set

Part Number: RNB-697-304

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Differential Ring And Pinion Set

Part Number: RNB-697-314

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Yukon Dura Grip case, GM 8.5" & 8.6", 2.73 & up

Part Number: YGA-20107

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Estimated Ship Date: Nov 17, 2025 if ordered today

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Ring and Pinion Gear Installation Kit, Minimum Install, 27-spline, Standard Rotation, Rear, GM 7.5 in., GM 7.625 in., Kit

Part Number: YGA-12050

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Estimated Ship Date: Nov 17, 2025 if ordered today

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Ring and Pinion Gears and Installation Kit, 8.5" GM 3.08 REAR R&P GEAR/ INSTALL KIT PACKAGE with AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12620

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Estimated Ship Date: Nov 17, 2025 if ordered today

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Ring and Pinion Gears and Installation Kit, 8.5" GM 3.42 REAR R&P GEAR/ INSTALL KIT PACKAGE with AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12621

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Estimated Ship Date: Nov 17, 2025 if ordered today

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Ring and Pinion Gears and Installation Kit, 8.5" GM 4.11 REAR R&P GEAR/ INSTALL KIT PACKAGE with AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12624

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Estimated Ship Date: Nov 17, 2025 if ordered today

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Automatic Transmission Kickdown Cables, Hi-Tech Kickdown Kits, Black Vinyl Jacket, 42.00 in. Cable Length, Fittings, GM, THM350, Kit

Part Number: LOK-XKD-2350TPU

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Estimated Ship Date: Oct 29, 2025 if ordered today

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Ring and Pinion Gears and Installation Kit, 8.5" GM 3.90 REAR R&P GEAR/ INSTALL KIT PACKAGE with 28spl POSI & AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12629

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Estimated Ship Date: Nov 17, 2025 if ordered today

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Wheel Bearing, C-Tek Standard, GM Metric-style, Each

Part Number: CEB-413-64000E

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Estimated Ship Date: Nov 13, 2025 if ordered today

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Automatic Transmission Kickdown Kit, Vintage Series, GM, TH350, Tan/Black/Red, Kit

Part Number: LOK-VS-23501

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Estimated Ship Date: Oct 29, 2025 if ordered today

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Pinion Shaft, SHAFT,GM 10-BOLT,7.5,RDF,NOSLP

Part Number: RMG-XL-5630

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Estimated Ship Date: Nov 4, 2025 if ordered today

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Axle 8.2" & 8.5" GM REAR, '68-'81 PASSSHAFT, 30-1/8", 2.780" SMALL HUB, 28spl, 1 SIDE

Part Number: SPZ-11951

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Estimated Ship Date: Oct 31, 2025 if ordered today

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8.5" GM PINION KIT, KOYO BRGS

Part Number: SPZ-60012

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Estimated Ship Date: Oct 31, 2025 if ordered today

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Clutch Kit, Concept 10.5 Dual-Disc Clutch, 1.125 in. - 10-spline, Metallic Disc, Pressure Plate, Chevy, Small Block, Kit

Part Number: RAM-50-2120N

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Estimated Ship Date: Oct 29, 2025 if ordered today

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Clutch Kit, Concept 10.5 Dual-Disc, 1.125 in. - 10-spline, 10.500 in. Diameter Metallic Disc, for Flat 153-tooth Flywheels, AMC, Chevy, GMC, Kit

Part Number: RAM-50-2122N

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Estimated Ship Date: Oct 29, 2025 if ordered today

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Shifter Replacement Parts, Shift Plate Pattern Inset, Chevy, Pontiac, Each

Part Number: OPS-TSS68

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Estimated Ship Date: Nov 24, 2025 if ordered today

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Shifter Replacement Parts, Shift Plate Pattern Inset, Overdrive, Chevy, Pontiac, Each

Part Number: OPS-TSS69

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Estimated Ship Date: Nov 24, 2025 if ordered today

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Yukon Bearing install kit for '81 and older GM 7.5" differential

Part Number: YGA-11061

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Estimated Ship Date: Nov 17, 2025 if ordered today

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