1980 PONTIAC FIREBIRD Differential & Rear-End Components

70-81 GM Camaro/Firebird 9-Inch Crate, Black PC, 31-Spline Axle, 3.50 Ratio, Helical Worm Gear Differential, No Brakes

Part Number: CUR-CR-GF335TNBB

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Estimated Ship Date: Dec 22, 2025 if ordered today

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70-81 GM Camaro/Firebird 9-Inch Crate, Black PC, 31-Spline Axle, 4.11 Ratio, Helical Worm Gear Differential, No Brakes

Part Number: CUR-CR-GF341TNBB

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Estimated Ship Date: Dec 22, 2025 if ordered today

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

Part Number: YGA-24480

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Gear, Ring and Pinion, 3.42:1 Ratio, GM, 7.5 in./7.625 in., 10-Bolt, 2 Series, Set

Part Number: RMG-4900051

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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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: Dec 15, 2025 if ordered today

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Differential, Lock-Right, Locker, 26-Spline, GM, 7.625 in., Each

Part Number: PWT-1932-LR

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 15, 2025 if ordered today

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$35.00 Mail-In Rebate

Price after Manufacturer Rebate: $605.99

Rebate Expires: 12/31/2025

Get $35 back after rebate on this Powertrax Product! Go to https://www.richmondgear.com/rebate.pdf for details. ...Read More

Get UP TO $55 back after rebate on select Powertrax Products! Go to https://www.richmondgear.com/rebate.pdf for details. Valid on purchases made between 11/1/25 and 12/31/25. Claims must be submitted within 30 days of purchase. Allow 6-8 weeks for processing. Valid in USA and Canada. Limit two qualifying purchases per household or address. This offer cannot be combined with other discounts or offers. Rebate intended for end consumer only. Show Less

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Spool, Mini, Steel, 28-Spline, 10-Bolt, GM 8.5 in., Each

Part Number: RMG-78-1028-1

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Today

Ring and Pinion Gears and Installation Kit, 8.5" GM 3.73 REAR R&P GEAR/ INSTALL KIT PACKAGE with AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12622

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Estimated Ship Date: Dec 26, 2025 if ordered today

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Ring and Pinion Gears, 3.23:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 8.5/8.6 in., Set

Part Number: SPZ-36212

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Estimated Ship Date: Dec 12, 2025 if ordered today

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Gear, Ring and Pinion, 3.23:1 Ratio, GM, 7.5 in./7.625 in., 10-Bolt, 3 Series, Set

Part Number: RMG-4900441

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Differential Clutch, Dura-Grip Composite Clutch Pack, Rear, GM, 7.5/7.625 in., Set

Part Number: YGA-16119

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Estimated Ship Date: Dec 26, 2025 if ordered today

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Ring and Pinion Gear Installation Kit, Bearing Overhaul, 30 Spline, Large Journal, GM 8.5 in., Kit

Part Number: YGA-11069

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Estimated Ship Date: Dec 26, 2025 if ordered today

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Axle Assemblies, Ford 9 in., Satin Black, 61.25 in. Flange to Flange, 31-Spline Axles, 1541H Alloy, Chevy, Pontiac, Kit

Part Number: ART-11179682

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Estimated Ship Date: Dec 15, 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

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 12, 2025 if ordered today

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Gear, Ring and Pinion, 3.23:1 Ratio, GM, 7.5 in./7.625 in., 3 Series, Set

Part Number: MGR-G875323

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Ring and Pinion Gear, 4.30:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36217

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Estimated Ship Date: Dec 12, 2025 if ordered today

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Ring and Pinion Gear, 2.73:1 Ratio, GM 8.5/8.6, 10 Bolt Cover, 30 Spline, 10 Ring Gear Bolts, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Set

Part Number: YGA-24490

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Estimated Ship Date: Dec 26, 2025 if ordered today

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Differential Shims, Pinion, Steel, Kit

Part Number: MGR-1104

3.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

Axle Assemblies, Ford 9 in., Natural, 61.25 in. Flange to Flange, 31-Spline Axles, 1541H Alloy, Chevy, Pontiac, Kit

Part Number: ART-11179680

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Estimated Ship Date: Dec 15, 2025 if ordered today

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Gear, Ring and Pinion, 3.42:1 Ratio, 1.438 in. Pinion, 27 Spline, 7.500 in. Ring Gear, Series 2 Carrier, GM 7.5/7.6 in., Set

Part Number: YGA-24479

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 29, 2025 if ordered today

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Differential Inner Gear Kit; GM 8.5 - 30 Spline, Open Diff

Part Number: SVL-10020478

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Differential Crush Sleeves, Steel, Fits with Aftermarket Ring and Pinion Set Only, Buick, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Each

Part Number: MGR-9785792

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

Ring and Pinion Gear Installation Kit, Bearing Overhaul, 30 Spline, GM 8.5 in., Kit

Part Number: YGA-11067

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Estimated Ship Date: Dec 26, 2025 if ordered today

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Ring & Pinion Gear Set GM 10 Bolt 8.5" / 3.90 Ratio

Part Number: SVL-2020954

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 9, 2025 if ordered today

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Mini Spool, Steel, 28-spline, 10-bolt, GM 8.5 in., Each

Part Number: YGA-32232

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 29, 2025 if ordered today

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