Endyn Mod Manifold

Here's the semi-finished manifold interior. The runner roofs are now shorter than the floor, by exactly the ports' dimensional differences. Note the inverted radius we achieve at the upper runner-to-plenum intersect. With the plenum side in place and a 64mm throttle body, this manifold will out-flow the best individual throttle body combination we've ever tested. At .500" valve lift the head/manifold combination will flow 349cfm @ 28"H20 with equally impressive mid-lift numbers.


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