Performance Automatic Automatic Transmissions PA45104

The Performance Automatic PA45104 is a new automatic transmission sold with a performance valve body and a deep aluminum pan, built as a standalone unit rather than a complete installation kit. Because a gear count or horsepower rating is not broken out for this particular case, treat the notes below as a general guide to fitting any performance automatic swap.

What a performance valve body changes

A performance valve body is calibrated for firmer, quicker shifts than a stock unit, improving response under load but sometimes making low-speed driving feel less smooth than a factory calibration. The deep aluminum pan adds fluid capacity, which helps manage heat during repeated hard use, and the aluminum case itself trims weight compared with an iron case.

Before you order

Check your bellhousing bolt pattern and transmission case style against this unit, and plan for a torque converter, cooler lines, and a dipstick, none of which ship here. Fluid fills through the case rather than the pan on this unit, worth knowing before setting up your own cooler and fill routine, and a point to double-check if you are reusing an existing cooler setup. Since this transmission is sold individually, pulling your old unit and comparing bolt patterns side by side is the surest way to confirm fit before the swap begins.

Does this include a torque converter? Confirm exact inclusions with us before ordering, since performance automatics like this one are commonly sold as the transmission alone.