318 marine engine.
Slightly off topic but I have a question...
67 318 vs 67 273 vs 69 318..
am I correct that the 67 318 and the 69 318 do not have interchangeable parts like a 67 273 and a 69 318 more or less do. ( hope this makes sense)
IDK but the pistons will be bore specific,lol.
Cranks are piston specific,
And pop-up pistons do not play well with closed chamber heads.
Early models had lightweight rods, while smog era teens used 340 type rods but with pressed pins..
Otherwise from 67 on,almost anything goes.
The 69 318 was a high-compression 9.something engine; 9.4 I think.
If you are building a performance engine, it doesn't really matter, cuz you are gonna be replacing almost everything anyway. And if doing a stock rebuild, from a core, it still doesn't matter.
The only fly in the ointment is the early 273 heads (65 and older) with the small odd-angle intake-bolts.
That's all I know.
