I have a 53 merc flathead thats been sitting in my garage for 30 years that I used to run in 34 ford. I had it bored .040 over with a 3/4 cam and two 97 strombergs. I went to start it one winter day and it wouldn't turn over. After checking for a bad starter or solenoid, etc. I pulled a plug and found water sitting on top of the piston. Water had worked its way around waterjackets> Cracked Block! I would like to use this again but don't know if block can be repaired. Any suggestions wa now if the block can be repaired. Any thoughts