CHEVROLET 6-6L-400 CHEVY-SMALL-BLOCK-GEN-I Transmission & Drivetrain

USA Standard Ring & Pinion "thick" gear set for GM 12 bolt truck in a 4.56 ratio

Part Number: SPZ-36180

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Estimated Ship Date: Dec 12, 2025 if ordered today

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Torque Converters, Twister Full Race, 4,200-4,500 rpm Stall Speed Range, 30-spline, 9.60 in. Diameter, 10.750 in. Bolt Circle, THM350, Chevy, Each

Part Number: HAY-97-1B42F

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Estimated Ship Date: Dec 15, 2025 if ordered today

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USA Standard Ring & Pinion gear set for GM 9.5" in a 4.56 ratio

Part Number: SPZ-36226

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Estimated Ship Date: Today

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Master Repair Kit, Automatic Transmission, TH350, TH350C, Kit

Part Number: ATP-SM9

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Dec 11, 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 28spl POSI & AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12630

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Axle Shaft, Rear, C-Clip, 1541H Alloy, 28 Spline, 30.500 in. Length, GM 8.2/8.5 in., Chevy, Each

Part Number: YGA-21241

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Estimated Ship Date: Dec 26, 2025 if ordered today

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Flexplate Bolts, Hex, 7/16 in.- 20 RH, .688 in. Length, Steel, Black Oxide, Chevy, Ford, Each

Part Number: NAL-3727207

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Estimated Ship Date: Today

Differential Ring and Pinion, Differential Ring and Pinon Front and Rear Complete Kit

Part Number: MGR-MGK-214

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Estimated Ship Date: Dec 15, 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 28spl POSI & AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12626

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Manual Trans Parts, Manual Transmission Synchro Sleeve

Part Number: SPZ-S0012

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Estimated Ship Date: Dec 12, 2025 if ordered today

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Flexplate Bolts, Hex, Steel, Black Oxide, 7/16 in.-20, 0.500 in. U.H.L., Chevy, Big, Small Block, Set of 6

Part Number: HUP-HP8980

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Axle Shaft, 28-Spline, 30.125 in. Length, Chevy, Each

Part Number: YGA-21242

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Ring and Pinion Gears, Ring and Pinion, 3.73:1 Ratio, Dana 70/70-HD/70-U, Set

Part Number: MGR-D70-373EXP

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Estimated Ship Date: Dec 15, 2025 if ordered today

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Gear, Ring and Pinion, EXCel, 4.56:1 Ratio, GM, 8.875 in., 12-Bolt Car, Set

Part Number: RMG-12BC456

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Estimated Ship Date: Dec 15, 2025 if ordered today

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Differential, Grip Pro Traction System, 35-Spline, Dana 60, Each

Part Number: PWT-GT436035

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Estimated Ship Date: Dec 16, 2025 if ordered today

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• Mfr. Rebate

$40.00 Mail-In Rebate

Price after Manufacturer Rebate: $1,139.99

Rebate Expires: 12/31/2025

Get $40 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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CLUTCH

Part Number: MCL-6300307M

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Axle Shaft, OEM Replacement, 1541H Alloy Steel, 30-spline Inner, 37.563 in. Length, Each

Part Number: MGR-MG1774

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Estimated Ship Date: Dec 16, 2025 if ordered today

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Ring & Pinion Gear, 5.38 Ratio, GM, 8.5 in./8.6 in., Set

Part Number: YGA-24494

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Estimated Ship Date: Dec 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: Dec 10, 2025 if ordered today

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SUPER KIT

Part Number: PIO-753026

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 15, 2025 if ordered today

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Torque Converters, Twister Full Race, 3,200-3,600 rpm Stall Speed Range, 30-spline, 9.600 in. Diameter, Chevrolet THM400, Buick, Chevy, Jeep, Each

Part Number: HAY-97-1D32F

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Estimated Ship Date: Dec 15, 2025 if ordered today

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Differential, Eaton Detroit Locker, 28-Spline, GM, 8.5 in., 3-Series, Each

Part Number: ETN-187C149A

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Estimated Ship Date: Dec 5, 2025 if ordered today

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Wheel Seal, OE style replacement quality wheel seal.

Part Number: NTN-NS8871

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Estimated Ship Date: Today

RING AND PINION

Part Number: MGR-MGK-211

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Estimated Ship Date: Dec 15, 2025 if ordered today

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Ring and Pinion Gears, 4.88:1 Ratio, 29-spline, Standard Ring Gear Rotation, Dana 70, Set

Part Number: SPZ-36265

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 12, 2025 if ordered today

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