I looked up the cost of new aluminum pistons. At about $65/ea, it probably makes sense to swith them out. I like the idea of lighter mass trying very hard to change directions quickly. However, I am assuming the pistons will retain the very anemic compression ratio of 6.5:1. Milling the head might be the easiest solution to upping the compression ratio to 7.5:1 and gaining a few horsepower. The 216 seems to need all the help it can get. I will be converting to 12 volt electrical, so turning over the engine with higher compression should not be a problem.
