Dart High Performance 305 Race Prep Engine Block

Designed for high performance and medium duty applications, the SHP (Special High Performance) block is the ideal starting point for hot rodders, drag racers, circle track competitors, off-roaders, and high performance marine enthusiasts.

Don't waste your valuable time sourcing, cleaning, machining and prepping a 40 year old core when you can have a brand new precision machined block with all the most desirable features for just a few dollars more.

• Designed for 305 race engines
• Bored .010, .020, .030, .040 or .060 over
• Little M coated cam bearings pre-installed
• Precision Machined new block
• Priority main oiling system
• Full water jacketed non- Siamese cylinder bores
• Extra thick deck ensures reliable head gasket seal
• Blind head bolt holes don’t go through to water jackets
• Scalloped water jacket walls improved flow around cylinders for better cooling
• Splayed outer bolts on middle main bearing caps
• Uses 1981-1985 stock style oil pan & passenger side dipstick
• Uses stock stamped steel or plastic timing cover
• All OE bolts holes for starters, clutch ball, fuel pump, ect
• Blind head bolt holes
• 350 main journals
• Two piece rear main seal
• Engineered to accept OEM roller rockers and cams
• The decks are parallel within .002" and has 350 main journals
• Block is cast from high nickel iron and has a priority main oiling system
• Designed for high-performance and heavy-duty applications producing up to 600 horsepower
• The ideal starting point for hot rodders, drag racers, circle track competitors, off-roaders, and high-performance marine enthusiasts