Because World Products specializes in large displacement engines, it would stand to reason that the company would develop intake manifolds designed for big-inch motors. This is certainly the case with the MERLIN family of intakes, of which several models are intended for use on 500 cubic inch and larger big block Chevy engines. In Fact, an extensive manifold dyno test on a 632 C.I.D. engine showed the MERLIN (p/n 063040) to produce 35 more horsepower than the competition!

In addition to out-powering the competition, it’s important to note that the single plane manifolds are designed to operate most efficiently in the 2500 to 7500 RPM range (3500-8500 for dominator manifolds) yet still maintain excellent low-end throttle response. They are also equipped with bosses to accommodate installing nitrous oxide port nozzles.

Models that accommodate a 4150-style carb and those for a 4500-style “Dominator” are offered for both standard and tall deck applications, as are manifolds that are specially machined for EFI applications.

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.

Overall Height
6" (4150 flange, 9.800" deck)
6.375" (4150 flange, 10.200" deck)
8.125" (4500 flange, 9.800" deck)
8.25" (4500 flange, 10.200" deck)

Port Size
2.300" x 1.670"