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Thinking about a 390 the long way ....

October 1 2017 at 7:22 AM
Travis  (Login country63sedan)

I was looking at the junk pile the other day and started thinking about combinations. What about the 3.98 crank in the 330 ft block. The block is at 3.915 now and would clean up at 3.95 or so. The drill bit test is a tight .220, so it's plenty thick. I don't want to hog this thing out, I want to build something RELIABLE, DURABLE AND EFFICIENT. A 318 piston would fit the bill with a shave on top and honing the rod small ends. Anybody know if it would clear the crank weights? This would be about as close to square as possible. The bore would limit valve size, but I should be able to get stock valves in touched up heads to flow good enough. This would be a freeway flier, so low rpm output and efficiency would be the focus. Ideas or suggestions? Am I silly? Later, Travis

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