Description:

• Dart SHP Pro Block
• 30% Higher Tensile Strength than the Original Dart SHP Block
• Includes Main Studs vs. Bolts
• Callies' Fully Counterweighted (CCW) Magnum Crankshaft
• Calico Coated Rod and Main Bearings  
• Callies Ultra H-Beam Connecting Rods
• Diamond R-Series 2,000HP Rated Pistons
• .225 Wall Wrist Pin
• Available with Either 15 Degree (LS3) or 12 Degree (LS7) Valve Reliefs