1978 PONTIAC FIREBIRD Transmission & Drivetrain

Combo, ProFit, Close Ratio, T-56 Magnum, 6-Speed, 1975-81 GM F-Body, 2.66:1 First Gear, 0.63:1 Sixth, Kit

Part Number: AWR-COGM-F3G

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Estimated Ship Date: Nov 25, 2025 if ordered today

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Combo, ProFit, Wide Ratio, T-56 Magnum, 6-Speed, 1975-81 GM F-Body, 2.97:1 First Gear, 0.50:1 Sixth, Kit

Part Number: AWR-COGM-F3J

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Estimated Ship Date: Nov 25, 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 13, 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 13, 2025 if ordered today

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Clutch Disc, Street/Strip, Organic, 1.125 in.-10-Spline, 10.512 in. Disc, AMC, Buick, Chevy, Jeep, Each

Part Number: ACL-3000902

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Estimated Ship Date: Oct 13, 2025 if ordered today

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Clutch Disc, Race, Ceramic, 1.125 in.- 10-Spline, 10.472 in. Disc, Chevy, Jeep, Pontiac, Each

Part Number: ACL-6266302

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Pressure Plate, LMC, Diaphragm-Style, 11 in. Disc Diameter, Each

Part Number: CTF-LM165552

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Estimated Ship Date: Oct 20, 2025 if ordered today

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Clutch Disc, Carbon Composite, 1 1/8 in.- 10-Spline, 10.4 in. Disc, AMC, GM, Each

Part Number: CTF-LM383271

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Pressure Plate, Centerforce I, Diaphragm-Style, 10.4 in. Disc Diameter, Each

Part Number: CTF-CF361874

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Estimated Ship Date: Oct 20, 2025 if ordered today

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Clutch Disc, Sprung Hub, DFX, Cerametallic, 11 in., Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Car, Truck, Each

Part Number: CTF-323384148

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Estimated Ship Date: Oct 20, 2025 if ordered today

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Pressure Plate, DFX Series, Performance, Diaphragm, 10.400 in. Disc Diameter, Each

Part Number: CTF-311361739

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Estimated Ship Date: Oct 20, 2025 if ordered today

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

Part Number: YGA-32331

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Estimated Ship Date: Oct 29, 2025 if ordered today

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8.5" GM REAR w/Aftermarket_AG-PRO,_YDG,_XHD-Std,_EATorDET BRG & SEAL KIT, KOYO BRGS

Part Number: SPZ-58050

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Estimated Ship Date: Oct 14, 2025 if ordered today

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8.5" GM PINION KIT, KOYO BRGS

Part Number: SPZ-60012

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USA Standard Ring & Pinion "thick" gear set for GM 7.5" in a 3.73 ratio

Part Number: SPZ-36198

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Estimated Ship Date: Oct 14, 2025 if ordered today

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High performance Yukon Ring & Pinion "thick" gear set for GM 7.5" in a 4.11 ratio

Part Number: YGA-24481

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Estimated Ship Date: Oct 30, 2025 if ordered today

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Clutch Kit, Organic, 1 1/8 in. Diameter Shaft, 10-Spline, 10.4 in. Diameter Disc, GM, Circle Track, Kit

Part Number: ZZZ-30042

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Estimated Ship Date: Dec 26, 2025 if ordered today

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Clutch Kit, Organic, 1 1/8 in. Diameter Shaft, 10-Spline, 10.4 in. Diameter Disc, GM, V6, V8, Kit

Part Number: ZZZ-MU5472-1B

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Estimated Ship Date: Dec 26, 2025 if ordered today

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Gear, Ring and Pinion, 2.73:1, GM, 8.5 in., 8.6 in., Set

Part Number: SPZ-36346

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Estimated Ship Date: Oct 14, 2025 if ordered today

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USA Standard Ring & Pinion "thick" gear set for GM 7.5" in a 4.11 ratio

Part Number: SPZ-36200

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Estimated Ship Date: Oct 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 AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12625

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

Part Number: YGA-11061

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Estimated Ship Date: Oct 29, 2025 if ordered today

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Posi spring kit for GM 7.5", with preload plates

Part Number: YGA-33206

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Estimated Ship Date: Oct 29, 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 13, 2025 if ordered today

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