World Products Big Block Chevy Gen VI Merlin Cast Iron Block

Enhanced Vortec Gen VI Bare Block

World Products is offering a Gen VI big-block compatible design that has been engineered for maximum durability and strength. This block uses a Gen VI one-piece rear main seal, oil pan rail, and front cover bolt pattern. Gen VI Big Blocks can utilize either the OE style hydraulic roller lifters or +.300 in. tall tie bar lifters. A unique feature on these bare blocks is the Mark IV style fuel pump boss to adopt a mechanical fuel pump with ease. The orientation of the water jacket and deck surface design will accommodate either Mark IV, Gen V, or Gen VI style cylinder heads, providing for maximum strength and versatility.