1978 PONTIAC FIREBIRD Transmission & Drivetrain

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

Part Number: CTF-CF361874

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Estimated Ship Date: Nov 5, 2025 if ordered today

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

Part Number: CTF-LM165552

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Differential, Grip Pro Traction System, 28-Spline, GM 8.5 in., Each

Part Number: PWT-GT201028

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Estimated Ship Date: Nov 7, 2025 if ordered today

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Ring and Pinion Gears, GM 7.5/7.6 in., 3.08:1 Ratio, 27-spline, Standard Rotation, GM 7.5/7.6 in., Buick, Chevy, GMC, Hummer, Isuzu, Pontiac, Set

Part Number: SPZ-36193

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Estimated Ship Date: Nov 3, 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 AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12623

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Estimated Ship Date: Nov 17, 2025 if ordered today

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Ring and Pinion Gears, 5.13:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 8.5/8.6 in., Set

Part Number: YGA-24163

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Yukon 1541H alloy rear axle for 8.2" and 8.5" GM passenger

Part Number: YGA-21243

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Ring and Pinion Gears, Pro Series, 3.90:1 Ratio, GM, 7.5 in., Set

Part Number: MGR-G975390

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SPACER

Part Number: PWT-1920604SAJ

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INTERNAL DRIVE

Part Number: PWT-1930404DGX

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SLOTTED DRIVER

Part Number: PWT-424003DGE2

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COUPLER

Part Number: PWT-5201004CJY

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Spring, SPRING,COMPRSN, .25D,250 LB/IN

Part Number: PWT-8011001ZAT

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Spring, SPRING,COMPRSN,15 LB/IN,IN, NS

Part Number: PWT-8021001ZBG

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Spring, SPRING,COMPRSN, 500 LB/IN,OUTR

Part Number: PWT-8031001ZAV

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Axle Shaft Retainer

Part Number: MGR-344171

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Ring and Pinion-GM 8.5/8.625

Part Number: MGR-GM10-308A

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Gear, Ring and Pinion, 4.56:1 Ratio, GM, 7.5 in., Set

Part Number: MGR-GM75-456

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Differential Carrier Bearings, Standard Replacement, 1.625 in. Bore, AMC, GM, Mopar, Jeep, International, Studebaker, Hummer, Each

Part Number: MGR-LM501349

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Gear, Ring and Pinion, 3.42:1 Ratio, GM, 7.5 in./7.625 in., Set

Part Number: MGR-G875342X

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

Part Number: SPZ-36200

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 31, 2025 if ordered today

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8.5" GM 28spl MINI SPOOL

Part Number: SPZ-59011

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Estimated Ship Date: Nov 3, 2025 if ordered today

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CLUTCH PRESSURE PLATE

Part Number: SXR-3082-654-319

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Estimated Ship Date: Nov 10, 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: Nov 17, 2025 if ordered today

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Performance Mini Spool (GM 7.5 - 26 Spine)

Part Number: SDH-10015364

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