340 exhaust manifold studs leaks coolant

my ole 318 car, someone used bolts on all the exh. manifold holes. As said before, fix it right. The end hole (2 per head) are wet and studs are the best bet. I've used RTV, non hardening Permatex and also teflon paste and tape, all with success on the studs. IF the hole was helicoiled in the past, use a liberal amount of a sealer (not tape). Helicoils are a little more difficult to seal due to the double threads (in and out) on the helicoil.

Open the block drains on each side, and just take some out of the block. It won't take much to lower the level below the head holes.

Do youself a favor, do them all at once. You'll thank yourself later.
Happy New Year!
Mike