To provide an ample volume of air and fuel for large cubic inch engines, while maintaining good velocity was the challenge facing World's engineering team. Following extensive R&D, the new MERLIN X became a reality. It's ideally suited to 540 and larger displacement, and has proven to deliver excellent power for big 632+ inch motors! Best of all, the MERLIN X is truly versatile, and combines excellent throttle response with solid top-end power. It's designed exclusively for 4500-series carburetors and clearly the best all-around single plane manifold on the market for big block Chevy engines!

World also offers a complete line of MERLIN intake manifolds for marine applications. They feature an integral brass water jacket to eliminate corrosion when in a saltwater environment..