SBC IR/BLK SHP 9.025-4.125-350

Dart SHP block designed for high performance and heavy-duty applications. Ideal for hot rodders, drag racers, circle track competitors, off-roaders, and high-performance marine enthusiasts. Features: brand new precision-machined cast iron block, Siamese bores 4.000" or 4.125" (unfinished), extra thick decks for reliable head gasket seal, blind head bolt holes (don't go through to water jacket), clearance for 3.75" stroke with steel rods, 350 main journals for common crankshafts, splayed outer bolts on middle main bearing caps to prevent cracks. Uses standard two-piece rear main seal or option for one-piece seal. Provisions for OE stock roller lifters and cams. Uses 1981-1985 stock style oil pan and dipstick. Uses stock stamped steel or plastic timing cover. All OE bolt holes for starter, clutch ball, etc. Priority main oiling system directs oil to main bearings first for dependable lubrication.