MERLIN Oval Port Iron Heads

Big block Chevrolet performance begins with a set of World Products' MERLIN heads!

MERLIN Rectangular Port Iron Heads

Big block Chevrolet performance begins with a set of World Products' MERLIN heads!

MERLIN III Aluminum Heads

A true high performance head, capable of supporting 800+ horsepower right out of the box!

MERLIN X Aluminum Heads

Get Pro Stock-like performance at a Sportsman-like affordability with our new 16° head!