Coast High Performance delivers powerful new Chevy LS 6.6L and 6.8L Shortblocks. CHP’s LS shortblocks are precision machined, assembled and fully balanced, using new aluminum, Probe Industries’ SRS forged pistons, 4340 steel crankshaft, lightweight I-beam connecting rods, and Clevite rings and bearings. 

Official Release:

Brand New for 2013 and packed with ALL FORGED COMPONENTS, Coast High Performance’s LS Short Block packages pack a punch!  With 6.6L and 6.8L offerings, these setups are ideal for the enthusiast that is looking to move away from their stock engine and up into the big leagues!  Coast only uses Brand New Aluminum Blocks in these builds and with forged internals through out, their LS Shortblocks are ideal for power adder applications as well as naturally aspirated performance.


  • Brand New Aluminum Block Full Machined; includes Billet 6-Bolt Main Caps
  • Fully Balanced & Blueprinted Block
  • Probe Industries SRS Forged Pistons (2618-T61)
  • Probe Industries Forged 4340 Steel Crankshaft (Internal Balanced for most applications)
  • Probe Industries Lightweight I-Beam Connecting Rods
  • Clevite Perfect Circle Rings
  • Clevite 77 Main H-Bearings
  • Clevite 77 Rod H-Bearings
  • 4.000 – 4.070 Bore Sizes Available
  • 4.000 – 4.125 Stroke Sizes Available
  • Assembled to exacting tolerances