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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.

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Inside GM’s Gen V LT engine family: history, tech, and performance of each LT engine option available.

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Looking to swap the venerable LS engine into your hot rod, muscle car, or classic truck? Take a look at our detailed identification guide for Gen III/IV LS engines before you hit the salvage yard or swap meet!

Gen III/IV LS Engine ID Guide

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

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Looking to update that '67-'72 C10 truck with an LS swap? These motors mounts and transmission crossmember kit will make that modern powerplant and transmission fit like they came that way from the factory!

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Learn how to swap out an LS engine with a modern fuel injected engine into a hot rod for added horsepower, fuel economy, or throttle response. View a list of parts and helpful tips to complete the installation.

LS Swap Guide: GM 3 Speed / 4 Speed Parts List

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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Learn how Zach replaces a transmission and breakaway converter in his 55 Chevy, with some helpful tips along the way.

Transmission Replacement on a 55 Chevy

Take a look at a few of the rare and wonderful Chevy engines in the Museum of American Speed!

Historic Chevy Performance Engines

Chevy LS engines get Engine Code as Top Category

Engine Family Facets

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Corvette C7 GM LC9 Automatic Transmissions

Corvette C7 GM LC9 Automatic Transmissions | Speedway Motors

Shop Corvette C7 GM LC9 Automatic Transmissions and get Free Shipping on orders over $175 at Speedway Motors.

Chevrolet Performance 19366637 Supermatic 6L80-E, 2400 Stall

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Chevrolet Performance 19417102 Supermatic 6L80-E, 3000 Stall

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Chevrolet Performance 19366637 Supermatic 6L80-E, 2400 Stall

Chevrolet Performance 19417102 Supermatic 6L80-E, 3000 Stall