340 r.i.p.

the broken rings make me wonder if the po was spraying it? More food for thought, 318s and 340s have the same stroke and bearing size. You could sleeve the 340 and find a junkyard 318 - mid 70's and down trucks had steel cranks - for the crank and rods and re assemble a 340. It is after all what you wanted in the first place. I had a 408 stroker motor, it was a lot of fun, but it didnt rev like a 340.