Skmfx Racing Engines Performer Rpm Intake Manifold
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Using a Performer RPM intake manifold along with a four-hole-tapered spacer was the trick to making 476 lb-ft of torque. They did have to relocate the inner boltholes of the intake to match the W-2 heads, but Robinson claimed they only did a small amount of porting on the intake, indicating its effectiveness. View Related Article
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