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I am looking for a 2-4 intake for my 340. Did or does anybody make them? Matt

I have been thinking about puting in a 360 magnum (? liter) motor in my demon, but dan't know when they started the magnum series? My thought on this is for the roller system in the motor. I have a 73' 340 that needs crank and full rebuild so I thought that the magnum's would be a better way to...

I have a 73' 340 for my Demon. From what I know these are externally balanced engines. I have pulled the oil pan off to check the crank and it didn't look good! There was rust and some pitting. I need to get a new crank, but I was wondering can I make this an internally ballanced engine? If so...