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Automatic Transmission Shift Kits

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Automatic Transmission Shift Kits

Instead of replacing your automatic transmission’s whole valve body, you can get better performance out of your stock valve body with a transmission shift kit....

Instead of replacing your automatic transmission’s whole valve body, you can get better performance out of your stock valve body with a transmission shift kit. Different manufacturers use different components and techniques, but they all modify the way transmission fluid is routed through the valve body. Some kits are made for racing and performance driving, while others are for towing and heavy-duty hauling. Whatever your application demands, Summit Racing Equipment has the shift kit you need.

Top Brands


When it comes to the complexities of your automatic valve body, you want a manufacturer you can trust. Summit...

Instead of replacing your automatic transmission’s whole valve body, you can get better performance out of your stock valve body with a transmission shift kit. Different manufacturers use different components and techniques, but they all modify the way transmission fluid is routed through the valve body. Some kits are made for racing and performance driving, while others are for towing and heavy-duty hauling. Whatever your application demands, Summit Racing Equipment has the shift kit you need.

Top Brands


When it comes to the complexities of your automatic valve body, you want a manufacturer you can trust. Summit only carries transmission shift kits from top name brands, including TransGo, TCI Auto, B&M, Sonnax, and Performance Automatic.

Individual Parts

Results 1 - 12 of 12

Shift Kit, Performance, Buick, Chevy, Oldsmobile, Pontiac, GMC, TH350C, 1981-91, Kit

Part Number: TRG-350C-1-2

5.0 out of 5 stars ( 10 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Conversion Kit, 1968-69 Impala 3-Spd Automatic Reverse Valve Body Factory Shifter Conversion Kit TH350, TH400, features Slap-Shift function

Part Number: SIW-C350-RVB

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

Conversion Kit, 1971-72 Chevelle 3-Spd Automatic Reverse Valve Body Factory Shifter Conversion Kit TH350, TH400, features Slap-Shift function

Part Number: SIW-C350-3RVB

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

Conversion Kit, 1968-70 Chevelle 3-Spd Automatic Reverse Valve Body Factory Shifter Conversion Kit TH350, TH400, features Slap-Shift function

Part Number: SIW-C350-2RVB

Not Yet Reviewed

Estimated Ship Date: Apr 30, 2026 if ordered today

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Estimated Ship Date: Apr 30, 2026 if ordered today

Valve Body Repair, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, TH250, TH250C, TH350, TH350C, Kit

Part Number: TRG-SK350

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

Shift Kit, Filter, Gaskets, for TH350 or TH350C, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Kit

Part Number: ATP-SK1

Not Yet Reviewed

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

Transmission Upgrade Kit, Transpak, GM, TH350C, Each

Part Number: BMM-30235

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

Transmission Upgrade Kit, Trans-Scat, Chevy, Buick, Oldsmobile, Pontiac, GMC, TH250C, TH350C, Each

Part Number: TCI-326300

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Jun 1, 2026 if ordered today

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Estimated Ship Date: Jun 1, 2026 if ordered today

VALVE BODY KIT

Part Number: PIO-765004

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

VALVE BODY KIT

Part Number: PIO-765007

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

VALVE BODY KIT

Part Number: PIO-765010

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

ATP Automatic Transmission Upgrade Kit

Part Number: ATP-JK1

Not Yet Reviewed

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

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