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Summit Racing™ Torque Converter Lockup kits

3.83 out of 5 stars 6 Customer Reviews

Summit Racing™ torque converter lockup kits are a simple way to control converter clutch lockup in 4th gear when swapping a GM 700R4 or 200-4R transmission in an early non-computer controlled vehicle. The adjustable vacuum switch will hold the clutch on during steady state cruising and disengage when accelerating or downshifting.

Summit Racing™ torque converter lockup kits are available in automatic (+12V applied via vacuum switch) and manual (+12V applied via toggle switch) versions. Choose the one preferred for your application.

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Summit Racing™ Torque Converter Lockup kits SUM-705419

Torque Converter Lockup Kit, Manually Activated, 700R4, Kit

Part Number: SUM-705419

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

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