Mopar Chrysler BB 383 440 Freeze Plug Kit The Speedmaster block is ready

The Speedmaster block is ready for the street racer or all-out racer with added strength and cubic inches

Whether you're rebuilding a stock engine or changing to valve springs that have more seat pressure

voltage-insulating materials

CE Ford front covers are direct replacements for your stock timing chain cover

000 psi tensile strength for the utmost in reliability

Mopar Chrysler BB 383 440 Freeze Plug Kit The Speedmaster block is readySpeedmaster freeze plugs will not rot out, like lower cost steel ones. Your new engine assembly deserves the best. Don't get stuck trying to replace a leaking steel freeze plug behind a motor mount a year or two from now! These kits include all of the necessary external block freeze plugs, and cam and oil galley plugs for one complete engine.