TH400, Transmission Parts

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How to Identify GM Transmissions | 700R4, TH350, 4L60, TH400, 4L80e, Powerglide, & More

How to Identify GM Transmissions | 700R4, TH350, 4L60, TH400, 4L80e, Powerglide, & More

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This resource contains a transmission pan shape ID chart and other tips to help with identifying GM transmissions.

How to Install Side Detent Shifter for GM TH200, TH250, TH350, and TH400

How to Install Side Detent Shifter for GM TH200, TH250, TH350, and TH400

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Learn how to install a side detent shifter in a 1969 Chevy C10.

How to Install an External Transmission Cooler

How to Install an External Transmission Cooler

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Learn how to install an external Transmission Cooler, to help keep the temperature of your transmission consistent.

700R4 Transmission Complete Guide | Diagrams, HP Ratings, FAQ

700R4 Transmission Complete Guide | Diagrams, HP Ratings, FAQ

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The 700R4 is a great choice when it's time to upgrade your classic car or truck with an overdrive transmission. Here's what you need to know about GM's famous 4-speed automatic.

Transmission Cooler Guide & How To Install an Inline Transmission Cooler

Transmission Cooler Guide & How To Install an Inline Transmission Cooler

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Learn about how aftermarket transmission coolers can help keep your transmission cool and the different options available for cooling with our expert guide.

T-5 Transmission

T-5 Transmission

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Check out these tips on T-5 transmissions!

How to Adapt LS Engine to 700R4 or Turbo 350 Transmissions

How to Adapt LS Engine to 700R4 or Turbo 350 Transmissions

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We show you how to keep that old GM transmission when swapping in an LS engine. Our LS swap adapter kits make it easy!

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