Intake Vacuum leaks?
while tuning up my electric choke i noticed a sucking noise on the intake manifold. Its coming from four holes. Put you finger on them and its sucking, all four hole. Quick google and these are the four bolt holes on a edelbrock performer RPM 2 intake #7562. These four bolts are specified in manual as hand tighten only.
Mine have no bolts and you can see the gasket covering the holes between block and manifold. Never was a bolt in any of these four holes.
The question is this, is there any reason this would have been done intentionally? The car runs great, its dyno'd at 638 hp 652 torque. When i plug all four holes the idle drops way down and car barely wants to keep idling.
Last edited by Curtis Chamberlain; Aug 12th, 19 at 10:55 AM.