The Merlin block has earned a reputation for providing reliable big-inch power, and this 3rd edition has been refined from design, manufacturing and quality control standpoints. To ensure total customer satisfaction every block is subje cted to stringent quality control standards. The Merlin III can be bored to a maximum of 4.625 and is clearanced for a 4.750� crank. With a reinforced bottom end featuring 4-bolt splayed main caps, the Merlin III can handle serious horsepower with complete reliability. The new Merlin III blocks are a high quality component you can rely on with total confidence.

The Merlin block has earned a reputation for providing reliable big-inch power, and this 3rd edition has been refined from design, manufacturing and quality control standpoints. To ensure total customer satisfaction every block is subje cted to stringent quality control standards. The Merlin III can be bored to a maximum of 4.625 and is clearanced for a 4.750� crank. With a reinforced bottom end featuring 4-bolt splayed main caps, the Merlin III can handle serious horsepower with complete reliability. The new Merlin III blocks are a high quality component you can rely on with total confidence.