Intake manifold is it stock..which gaskets to use

Originalowner73 340duster said
Did intake ..plugs..driver side valve cover..heater core...and have a damn broken valve cover bolt front passenger side so in the best place to work..got it drilled out all nice and put a easy out in and the MF broke...can't catch a break..should have just drilled whole thing out and re taped ar helicoiled new thrrads..now have a hole drilled halfway threw bolt and head to the bottom of the bolt. . tomorrow hopefully I can make it bigger and not break anything else and get the easy out out and finish up!!

of course it's too late, now, but for future reference, you should use a left hand twist drill, and run the drill motor in reverse rotation to drill out the broken bolt. When you are drilling in reverse direction the drill usually catches and it will spin it right out. When you are using those screw extractors, there is always the danger of breaking one off in the hole and worsening the problem.