Merlin Archives - Engine Builder Magazine
World Products Merlin IV Block

World Products has completely redesigned and re-tooled the famed Merlin Big Block to achieve new heights in performance and ease of use for engine builders and racers.

World Products Merlin III Block with Added Deck Height

World Products American made Merlin III cast iron big block is now available with an extra .050″ of deck height. This new feature allows greater versatility in selecting connecting rods and particularly in selecting pistons with additional compression height to keep the ring grooves and wrist pin bore isolated.