1977 GMC G25 700R4 Parts

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1977 GMC G25

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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.

Upgrading a 700R4 Transmission - 1967 Chevelle

Upgrading a 700R4 Transmission - 1967 Chevelle

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Follow along as Jeff installs an early 700R4 transmission for the big block in his 1967 Chevelle. See how this unit is upgraded and converted to a later 30 spline style.

1969-77 GM Brake Calipers

1969-77 GM Brake Calipers

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Steve explains the process of installing Speedway calipers.

Replacing a G-Body 7.5" Bolt Rear End

Replacing a G-Body 7.5" Bolt Rear End

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Learn about the power behind the G-body platform and the steps to upgrade a 7.5" bolt rear end to a 8.5" to withstand high horsepower. See how to change the differential fluid and install new gaskets.

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