318 piston's and quench

Dan the man said

Haven't bought a block yet. I've heard the 302 casting's are great for a budget build up. If I used those piston's & left them at 0.067" in the hole would I still have to worry about piston to valve clearance? Would it be a dog with that much quench? I've heard that the KB piston's are more trouble then they are worth, is this true. Also anyone know about 1.500"? Heard they are suppose to be good for torque but I can't find any.

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The problem is the valve timing. The modern cams open the intake valve sooner and faster which gets them closer to the pistons than older stuff. You probably won't have an issue, but you also have no quench. Quench doesn't make it a dog. Lack of compression can make it a dog. KBs are trouble to people who thin they know more than the manufacturer. Set the piston to wall correctly, and set the ring gaps properly, and they are a very good, cheap, and light pistons - with decent valve reliefs so if in the future you want a larger cam there's no issues. You won't notice the difference between a 1 1/2" primary and 1 5/8" primary header.