1982 Ford E-100 Econoline 700R4 Electrical, Lighting and Wiring Parts

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.

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.

Check out this headlight wiring and taillight wiring diagram.

In this Tech Tip, John answers a customer question about what would be needed to swap some additional power in place of his anemic 233c.i. Ford.

Are your gauges reading erratically or does your car run out of power at high rpm? It may be the cause of a bad ground. Speedway Motors can show you how to diagnose and fix the problem in no time at all!