Slant six builders...Lets talk Cams

volaredon said

huh. Interesting. I actually have a set of stock 318 valves here. have to scope it out/ have read/heard many places, that the /6 actually went to stock 318 springs as std replacement..... valves and springs came from a supposed lo mile set of '302 (casting number) 318 heads from a member here (I forget who)

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Yes, the stock 340 spring is a good all around HP replacement. But the drawback there is the stock slant six valves are a little short to take full advantage of the extra height, so you have to be careful not to run into coil bind. That's why If I am doing "much" in the way of performance, I go right to the 318 valves.

I did not on my recently assembled "for now" motor, because the head was in great condition and I was trying to avoid extra cost associated with that. I have the factory closed chamber head in the shop now getting the 318 valves put in. I can't really afford another high dollar head, so other than the heavy milling, I kept this head stock.