I knew there were some differences. Thanks. I'm still not convinced this is a marine block but everything is done.
The timing jumps all over the place. Looking at the ignition module it has no numbers on it and looks to be generic. I ordered the Sierra ignition module for the 3.0. I'll get it...
There is no way I'm going back to points ignition. There is no reason an electronic ignition won't work. I think I just need to find out what ignition module to put in it
I understand what you are saying, but the blocknis definitely a basic iron duke 2.5. I'm pretty sure mercruiser didn't have special castings. Probably different machining specs. Maybe more zink to resist corrosion.
None the less, all the marine parts are on it now.
It has a 3.0 marine cam and...
Most of this is in my post. Valve cover says 130. No idea what year. It is badged as a 3.0 but upon disassemble found it to be a 2.5. Had a steel impeller pump. Replaced it with a correct marine pump. No idea what you mean by variation but it has .060 oversize pistons, marine head, marine cam...
I am brand new to working on boats and need some help. I am not new to mechanics however. I am an ASE certified master tech with 26 years experience so I can understand whatever it is you tell me. No that that's out of the way.
So my uncle bought a nice boat for next to nothing but didn't run...
