Chrysler 440 Mopar Side Bolt Billet Aluminum Main Caps

NEW, CNC Machined Billet Aluminum 383-400-440 Center 3 Side Bolt Main Caps. These custom designed side bolt main caps are designed to add strength and stability to the center main caps, by adding crossed drilled bolts. As in the case of the KB, TFX and AJ Block crossed drilled main have proved their value. Block will require line boring after the main caps have been installed.