Racing Flag

PARTS INTENDED FOR COMPETITION USE ONLY.
Click for more details.

Racing Flag

PARTS INTENDED FOR COMPETITION USE ONLY.
Click for more details.

BIG-BLOCK ZL1 ALUMINUM BLOCK

12370850

LS7 7.0L CORVETTE BARE BLOCK

  • 4.240” finished bore
  • 4.300” max bore
  • 4.375” max stroke  
  • Use sleeve P/N 12480035
  • 2-piece rear main seal
  • Uses Mark IV front timing cover

VISIT OUR BRANDS FOR YOUR OE NEEDS

|

Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public streets or highways. Visit www.chevroletperformance.com/emissions for more details.