TH400, Chrysler 8-1/4 Inch, Engine Parts

Concerned about a transmission swap? Our engine transmission compatibility checker will help confirm what you need to make it happen.

Estimate horsepower, trap speed, and ET with our drag performance calculator. Use it as a 1/4 mile time estimator or 1/8 mile ET to mph calculator.

Engine Cylinder Numbers

Tim shows off our aluminum cylinder heads for 348-409 Chevys.