$ 4,295.00
LSR - Concept Performance Aluminum Bare Block
LSR Block Features
1,500(+) HP Capable
- 100% Made in USA
- 356 T6 Premium Aluminum
- Spun Ductile Iron Sleeves
- Cross Braced Lifter Valley with Individual Drain Backs
- 40% larger Main Cap Surface with a Double Crossbolt Option
- Short or Tall deck blocks feature a Heavy Duty 0.750" deck thickness
- Added Stock to the Front and Rear Valley Walls
- Added 7th Transmission Bolt Hole to Accept Early Style GM Transmission
- Maximized Cranksaddle Radius
- Front Oil Feed Line Can Be Restricted for Mechanical Lifter Options
- 6 Bolt Cylinder Head Pattern
- All OEM LSX parts such as covers, pans and accessories work seemlessly with the LSR
LSR Block Specs
- Standard Deck: 9.240"
- Tall Deck: 9.720
- Bore Range: 4.065-4.190
- Weight: 113lbs w/main caps
- Billet Main Caps
LSR Block Options
- ARP Main Stud Options
- Cam Bore Can Be Machined to Accept 60mm Roller Bearings
- Lifter Bore can accept larger bore or key way style lifter
- Double Cross Bolt Option- Increases to 8 Bolt Main
- Solid Fill - No Water Jacket - Full Send Maximum Powa'
Standard Deck Options
- Standard Deck - Single Cross Bolt PN LSR-SD1X
- Standard Deck - Dual Cross Bolt PN LSR-SD2X
- Standard Deck SOLID FILL PN LSR-FMJ-SD2X
Tall Deck Options (All Dual Main Cross Bolts)
- Tall Deck - STD Cam Height PN LSR-TD2X
- Tall Deck - Raised Cam Height PN LSR-TD2XRC
- Tall Deck SOLID FILL - Standard Cam Height PN LSR-FMJ-TD2X
- Tall Deck SOLID FILL - Raised Cam Height PN LSR-FMJ-TD2XRC