Re: Mark 55 Block

[jim-spencer]

Thanks for your help. My goal was to use a Merc 300 block, pistons, and crank, and the reed cages and carbs from a mark 55. I bought a mark 55 with a stuck power head, and after disassembling it, I found the block and pistons were in poor condition. I have a useable Merc 300 short block. I noticed the casting numbers on the 2 blocks were different, but the numbers on the crank shaft covers were a match. I want to produce the same 40 horses as the mark 55.

Thanks again for the help, Jim.