Overview Brand: ATK High Performance Engines Manufacturer’s Part Number: SP48 Part Type: Short Block Engines Product Line: ATK High Performance Chevy 427 Dart Race Series Short Blocks Summit Racing Part Number: HPE-SP48 UPC: 653517226267 Crate Engine Family: Chevy Small Block Actual Engine Displacement: 7.0L/427 Rear Main Seal Style: 2-piece Crankshaft Material: Forged 4340 steel Piston Material: Forged aluminum Short Block Piston Style: Flat top Connecting Rod Material: Forged 4340 steel Connecting Rod Beam Style: H-beam Engine Block Material: Cast iron Main Bolt Style: 4-bolt Deck Height (in.): 9.025 in. Engine Balance: Internal Oil Pan Included: No Timing Cover Included: No Harmonic Balancer Included: No Flexplate Included: No Flywheel Included: No Assembled: Yes Remanufactured: No Quantity: Sold individually. ATK High Performance Chevy 427 Dart Race Series Short Blocks Big power requires a solid foundation, so start your next build with one of these ATK High Performance Chevy 427 Dart Race Series short blocks. These short blocks are built, balanced, and blueprinted to be the strongest and most reliable short block available for your race car or hardcore street car. These ATK High Performance Chevy 427 Dart Race Series short blocks include the following: * Dart SHP block * Aligned and honed main bores * 4340 forged crankshaft * 4.00 in. stroke * 4340 forged H-beam connecting rods * Forged flat-top pistons