I have a 1998 two bolt crank, one piece seal, Vortec Head, roller cam, GM based Mercruiser 305 with Carb. Before the damage, the engine had low hours, and is in "great" shape. Block has cracking from freezing, and now out of the boat.
I also have a 1984 305 out of a Iroc Z, low miles, with Edelbrock performer intake and Edelbrock carb (model 56 I think). It's missing the distributor (it was stolen) and flywheel (didn't come with the engine).
I'm looking for the most economical, safe, and reasonable way to get the boat back on the water. I'm looking for opinions:
- All of my original mercruiser bolt on parts are in great shape (pumps etc) and I plan to re-use these with any solution I go with.
- I can pick up a new style long block for around $1,800, bolt on my heads, intake, etc from the original engine, and off I go.
- I have not found a clean block with the original bore size that I could bolt my existing engine internals into, and I've been told they are non-existant, mostly due to bad winterizing creating a huge demand for them.
- To use the Iroc block, do I need a marine cam? I've seen them for around $120 (flat tapets). What do I need to do the edelbrock carb to marinize it, if this is even possible? I can't use my old mercruiser carb because the profile is half the size of the edelbrock. And the mercruiser intake manifold won't fit on the 84 block. I had one auto mechanic tell me that I could just bolt my vortec heads onto the 1984 block, put the mercruiser intake and carb on it, and I'd be good to go. Another told me that wouldn't work because of the roller cam.
So before I start tearing the 84 block apart, I thought I'd ask for your experience/opinions on the best way to go.