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!

Overall Height
6.125" (4500 flange, 9.800" deck)
6.375" (4500 flange, 10.200" deck)

Port Size
2.300" x 1.670"