I just bought another 29 chev. This one is a sedan. Runs Ok except main knock. Question is: I have a cooling leak on the left side between#1 & 2 cylinder, any ideas?

Is the leak on the outside of the block? Do you see a crack? If on the outside "pinning" is likely the best fix. Drill holes along the crack, cut threads with a tap and install "pins" Once the pins cover the entire distance, including the gaps between first set of "pins" the block should be stable and also leak free.

Some have used epoxy, like JB Weld, to fill the crack with good long term success.

I don't recommend brazing or welding unless you find an expert that will guarantee his work.

Thanks I try epoxy. I have a friend that took his engine to 2 separate welding shops for several hundred dollars and no fix. He is now using epoxy with good results, so that what I will try next.

DC>