318 expansion plug leaking

BJammin said

Ive got a 73 Scamp 318 v8 and ive Been noticing coolant leaking onto my headers. Found the left middle engine expansion plug to be leaking and have slight movement. Is there any tips for installing a new one with the engine in the car. I know i will have to remove the header and possibly the steering gear. Any tips will help.

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Yes, recently.
Took the exhaust off the block, took the motor mounts off the block and leaned it over for one side then the other way for the other side.
Took probably 2 hours and it was a PIA. :D

Especially since some of the centers popped through and left the outer ring of the plug in the block, and probably what some of yours are going to do.

I used a 36" steel rod that I ground a concave in the end with sharp edges to get the ring out, and that worked fine.