DA31213454 - DART BIG M BLOCK BBC DECK=10.200" BORE=4.500" MAIN=STD BBC 2000+HP

B Chevy, Dart Big M Block, 10.200 Deck Height, 4.500 Bore, Steel Main Caps, Engine Block

Dart Big M block has reinvented high horsepower engine builds. Dart has engineered the Big M to be the strongest, most reliable, and easiest to build big block on the market. Features Simaesed extra thick cylinder walls resist cracking and improve ring seal, Scalloped outer water jacket walls improve coolant flow around the cylinder barrels to equalize temperature. Steel Four bolt main bearing caps have splaved outer bolts. Crankshaft tunnel has clearance for 4.500 Stroke crankshaft. Rear four bolt cap uses standard oil pump and two piece rear seal. Rated to support 2000+ horsepower engine builds.