427ci LS Short Block for Big Boost

This 427ci LS short block set is intended for big power builds. The Compression Ratio is a boost-friendly 9.75:1 when paired with a 68cc combustion chamber. Check out this parts list: Dart SHP Pro Block Callies' Fully Counterweighted (CCW) Magnum Crankshaft Calico Coated Rod and Main Bearings   Callies Ultra Enforcer or Dyer's NH Series Double Banded Forged Connecting Rods depending upon availability Diamond 2K Pistons .225 Wall Wrist Pin 12 Degree (LS7) Valve Reliefs -20cc Dish The Dart LS Next SHP Pro is the newest in Dart's line of LS Next engines blocks. The difference between the "Pro" and the SHP LS Next block are the metallurgy and standard main studs instead of bolts. The Pro has a higher nickel content for 30% higher tensile strength so it can handle more power. SHP Line Features- Full side skirts to accommodate OE oil pans- Accepts LS style Oil filters- Retains all factory bolt hole locationsLS Next FeaturesRetains all of the LS Next designs features not found in compet