BBC IR/BLK SPORTS 9.800-4.560 NO KI

Dart Big M Sportsman engine blocks are designed for Big Block Chevy (BBC) applications, offering versatility for various engine combinations. They feature 9.800” and 10.200” deck heights and bore sizes up to 4.600”. The Sportsman block comes with Ductile Iron 4-bolt main caps.

Key features include standard 9.800” and tall 10.200” deck heights, and various bore sizes up to 4.600” with siamesed extra thick cylinder walls (minimum .300” thick with 4.625” bore). It uses +.300” tall Gen VI style lifters (modification for Gen IV style available) and has 4-bolt main bearing caps in Ductile Iron with splayed outer bolts. The block incorporates a true priority main oil system with a stepped main oil gallery (9/16“ to 1/2“ to 7/16“) and front oil crossover, along with lifter valley head stud bosses and dual oil pan bolt patterns for standard and notched oil pans.