CNC Port Match Service for Edelbrock 7551 Intake Manifold. Send us your manifold, and we port match it!
Edelbrock part #7551 Performer RPM Air-Gap Oldsmobile 455 intake manifold is intended for aggressive street/ strip big-block Oldsmobile applications. Designed to optimize horsepower production from 1500 to 6500 rpm, this manifold will perform best with engines that have an aggressive camshaft profile that will take advantage of the increased flow this manifold can provide. This intake manifold features our popular Air-Gap design that separates the runners from the hot engine oil, resulting in a cooler, denser air charge for more power. This manifold is compatible with stock heads, but has been designed to work with aftermarket cylinder heads. Not compatible with EGR or spread-bore carburetors.
Edelbrock 7551 Premier CNC Port Match Service
Ships in 3-5 weeks after arrival at Performance Driven Design.
Let's talk CNC port match for a moment!
Our CNC port match holds a simple concept at heart - Move Air.
The intake manifold, in it's simplest form, is an extension of your intake port. So, why would you not port match it? That's a good question!
Our CNC port match program opens up the "as-cast" intake ports on this manifold to more closely match the intake gasket. It seamless blends into the runner roughly 2.5" deep, where the as-cast runner reaches a more appropriate size for the application.
With any "as-cast" item, some port shadowing will be present. This is perfectly normal, and is not controllable by PDD. We machine our ports where they are supposed to be, and occasionally the casting errs to the shy stock side.
PDD's port match is designed to leave .045" around the perimeter, inside the gasket. By designing our port match in this manner, you have more flexibility in alignment due to variance in block deck height, intake port height, etc. It is far more important to leave the intake port smaller, rather than risk a ledge which can lead to fuel puddling, turblence, and otherwise unsavory horsepower robbing issues.