Dart Big M 10.200 / 4.500 Bore / 55mm Cam tunnel / Billet Caps

Dart blocks for big-block Chevy engines are designed from the ground up for hard core racing, all the weaknesses of the factory castings have been adressed. Dart blocks are brand-new, fully machined, and virtually ready to assemble with off-the-shelf components. Don’t waste time on a questionable junkyard block or waste money on machining a “semi-finished” factory casting. Extra thick decks, siamese bores, enlarged water jackets, priority main oiling, 4-bolt main caps, finished main bearing bores and cam tunnels make it easier to build superior racing and performance engines. Our precision CNC machining and strict quality control measures mean you get optimum out of the box performance without requiring costly machining operations after purchase. Brand New 10.200 Deck Height 4.500 Bore 55mm Cam tunnel upgrade Billet Caps