Concept Performance FMJ LSR 6-Bolt Aluminum Block, Standard Deck

Concept Performance prides itself in providing quality products that are 100% cast, machined, and assembled in the United States of America.  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.

 
Features

• Cross Braced Lifter Valley with Individual Drain Backs
• 40% larger Main Cap Surface with a Double Cross-bolt 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"
• Front Oil Feed Line Can Be Restricted for Mechanical Lifter Options
• 6 Bolt Cylinder Head Pattern
• Cam Bore Can Be Machined to Accept 60mm