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 9.750", with or without raised cam, will be available with our exclusive Double Cross Bolted Main Cap Feature.

Reinforced from Top to Bottom...​

  • Cross Braced Lifter Valley with Individual Drain Backs

  • 40% larger Main Cap Surface with a Double Crossbolt Option

  • Short or Tall decks feature a 0.750" Deck

  • Added Stock to the Front and Rear Valley Walls

  • Pro-Gram Engineering Main Caps SAE 1045 Billet

  • ARP Main Stud Options

  • Maximized Cranksaddle Radius​

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

  • LSR Engine Block weighs 113 lbs with Main Caps

  • Standard Deck Height 9.240"

  • Tall Deck Height 9.750"

  • Bore Range 4.065" - 4.200"

  • Raised Cam Options available early 2017

  • 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

  • The Double Crossbolt option gives you an 8 bolt main on 2, 3, and 4.

  • 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