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TCI 2004R/700R4 Lockup Wiring Kits 376600

TCI Auto 376600 - TCI 2004R/700R4 Lockup Wiring Kits
Made in the USA
  • Carl's Tech Talk - Torque Converters

    Carl's Tech Talk - Torque Converters

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Torque Converter Lockup Kit, Wiring Kit, Vacuum Switch, GM, 200-4R, 700R4, Kit

Estimated Ship Date: ...Loading Tuesday 5/26/2020
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Hazardous Material Warning
WARNING: Cancer and Reproductive Harm. For more information, visit www.P65warnings.ca.gov.

Brand: TCI Auto

Manufacturer's Part Number: 376600

Part Type: Torque Converter Lock up Kits

Product Line: TCI 2004R/700R4 Lockup Wiring Kits

Summit Racing Part Number: TCI-376600

UPC: 788120007641

Manual Override Switch Included: Yes

Indicator Light Included: No

Quantity: Sold as a kit.

Notes: This kit contains a gasket for the 700R4 transmission only. If this kit is to be used with a 200-4R the transmission pan gasket must be purchased separately. See the “Suggested Parts” tab for additional information.

In-Store Pickup: Choose In-store pick-up (OH, NV, GA, TX) on our web site.

Installation of these TCI 2004R/700R4 lockup wiring kits makes retrofits into non-ECM 700R4 or 2004R vehicles a snap. They allow automatic operation of the TCC in 4th gear under stable engine operation, and disengage the clutch when accelerating or downshifting. A manual override option is also provided. These TCI torque converter lockup wiring kits are constructed from OEM connectors and oil-resistant wire.


Questions & Answers Ask a Product Question

I just bought this transmission Manufacturer's Part Number:
381500 My question now is am I also going to have to buy this lockup kit for it? No one mentioned a word about this and I ask before I bought it if there was anything else I'd need. The transmission is ready to be installed into my car but looks like it's going to have to wait. I don't understand why paying what I did for this that I have to keep buying extra parts for it, this lockup kit and even a speedo gear housing.

Asked by REGGIE on April 21, 2018


Yes we did have to get a speedometer gear and a gear fir tailshaft to chsnge from electric to csble drivin

MARY from VA answered on April 23, 2018

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Will this work in the TCI 371000 with the TCI StreetFighter Torque Converter 243105

Asked by SCOTT on March 28, 2020


This is for a basically stock 700R4 and 2004R. I would contact TCI directly. In stock transmissions these work great

BRIAN from FL answered on April 01, 2020

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My 200-4r has the pressure switch mounted externally on the passenger side of the trans case. Do you have instructions for that type of installation?

Asked by JIM on August 20, 2019


Switches mounted on pass side in 4th gear pressure port were used for emission controls (timing, egr, etc). I would install kit as per instructions making a neater install rather then running wires across the trans to 4th gear pressure port.

ROBERT from PA answered on August 27, 2019

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Hello . I bought the TCI Kit. 200 mis. works perfect.
He is so built that he only the lock up in the 4th. Gear shifts.
Now the Loc upshifts the 3 and 4 gears.
I mean the Fourth Gear Pressure Switch damage. Is that correct ??
How do I get a new Fourth Gear Pressure Switch ?????
Sorry for my English.
Best regards Jörg

Asked by JORG on May 18, 2019


Did you hook up the green wire

TIM from CO answered on June 06, 2019

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Some parts are not legal for use in California or other states with similar laws / regulations

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