I just jb welded my blocker plate on, i broke off all the bolts but one and didn't really have much choice, i stuck the jb weld in there and loosely tightened down the bolt top (only) bolt... is this going to seal or should i run out there and get that plate off before it's permanent?

 

give it a shot. if doesn't work, just get an intake manifold from the junkyard and do it right.