Come on Edelbrock. Get your act together.

Ohhh well sometimes you gotta know when to take a break. Doing enough of these I know where to place the gasket to scribe my lines but I use 7/16 bolts when I can to center the gasket. Well when someone self grinds the holes for more bolt clearance at all different kinds of angles it really makes things fun. Then when they stick it in the mill to grind the top of the manifold so the valve covers don’t hit now they took gasket sealing surface that I need to raise the port to where it should be. Please Dont do this guys. If you need more clearance just flip the manifold over and hand drill bigger holes.

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I never ran into holes like that , and have even wrapped the 7/16'' bolts with alum. tape to make them tighter , not that I have done any but my own ...