Automatic Transmission Shift Kits

Shift Kit, Performance, Gaskets, Pro-Race, Heavy Duty, Super Show Off, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, TH400, Kit

Part Number: TRG-400-PRO

4.95 out of 5 stars ( 21 )

Estimated Ship Date: Monday 12/29/2025

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Shift Kit, Performance, Buick, Chevy, Oldsmobile, Pontiac, GMC, TH400, 1965-95, Kit

Part Number: TRG-400-1-2

4.76 out of 5 stars ( 21 )

Estimated Ship Date: Monday 12/29/2025

Transmission Upgrade Kit, Transpak, GM, TH400, TH375, M40, Each

Part Number: BMM-20228

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/29/2025

• Free Shipping

Shift Kit, Performance, Full Manual or Automatic Capability, Buick, Chevy, Oldsmobile, Pontiac, GMC, TH400

Part Number: TRG-400-3

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/29/2025

• Free Shipping

Transmission Upgrade Kit, Trans-Scat, Buick, Chevy, Oldsmobile, Pontiac, TH400, Each

Part Number: TCI-400000

Not Yet Reviewed

Estimated Ship Date: Jan 30, 2026 if ordered today

• Drop Ship
• Free Shipping
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VALVE BODY KIT

Part Number: PIO-765003

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order