Indy cylinder head used to bore the 318 blocks out to 4 in and put a 4in stroker crank in them. I asked them about that and they said basically what they did was ultrasound the blocks to find good blocks and bore them out to 4 in.
So what I have been thinking about doing is ultrasounding some of my 5.2s and boring one out to 4in and cutting the mains down on a 360 crankshaft and making me a 360 in a 5.2 block and use the roller cam and whatever heads I have laying around.
simply put you would just be taking the rotating assembly out of the 360 cut the main bearing size to 318 size and boring to 4 in.
There wouldn't be any rebalancing there wouldn't be any block grinding aside from the boring of the cylinders.
This would just be for fun. So if those people looking under my car and see it says 318 are going to wonder why it runs a little bit better.
