273 Commando Slugs

65 Val said....."Mike...just swapping the pistons/rods bank for bank won't give you the offset advantage you're looking for. You have to flip the pistons 180* on the rods (and in the bore) to achieve this. You can do this with flat-top pistons. You can't do it with the pop-ups as the pistons will hit the heads and/or valves."
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No, the pistons will not hit the heads, and you do not turn the piston 180 on the rod. Figuring piston and rod mounting can really be confusing sometimes, even for experienced engine builders, so one needs to really think things through.

When you take, say, #1 rod and piston (notch to the front) out of its hole, and turn it 180 (notch to the rear) and put it in #2 hole, the dome is still in the correct position for the head, and the pee hole in the rod is still pointing to the cam, with the pin offset is now opposite of where the factory wanted it. There is no reason to take the slugs and reverse them on the rods unless you just want to have a MAJOR problem with flat-tops. You'll wipe the cam out because now the pee hole in the rod is pointing to the side of the block instead of the cam and you'll wipe the cam out.