Features And Benefits

Features And Benefits

The LSR aluminum engine block is cast of a proprietary 356 T6 Aluminum Ingot, featuring Spun Ductile Iron Sleeves. The standard deck 9.240" and the tall deck 9.720", with or without raised cam.

Reinforced from Top to Bottom...​

  • Cross Braced Lifter Valley with Individual Drain Backs

  • 40% larger Main Cap contact surface to skirt wall

  • Short or Tall deck blocks feature a Heavy Duty 0.750" deck thickness

  • Added Stock to the Front and Rear Valley Walls

  • SAE 1045 Billet Main Caps

  • ARP Main Stud Options

  • Maximized Cranksaddle Radius​

  • ​Added 7th Transmission Bolt Hole to Accept Early Style GM Transmission

  • LSR Engine Block weighs 117 lbs with Main Caps

  • Standard Deck Height 9.240"

  • Tall Deck Height Finishes At 9.720"

  • Bore Range 4.050" - 4.185"

  • Raised Cam Options available

  • Front Oil Feed Line Can Be Restricted for Mechanical Lifter Options

  • 6 Bolt Cylinder Head Pattern

  • Cam Bore Can Be Machined to Accept 60mm Roller Bearings

  • Lifter Bore Diameter Can Be Increased for Different Applications

  • All OEM LSX parts such as covers, pans and accessories work seemlessly with the LSR

  • With the LSR, you are buying 100% American made and finished product