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so I went to the weapons shop at work and weighed a stock bore 360 oe piston and a speed pro h 116 cp that is 30 over and they are really close less than a gram difference. the pin is close too. I am going to use some arp bolts on rebuilt stock 360 rods and run it. I think if you are not buzzing the crap out of it you would be fine. for sure it is always better to balance but they are so close.


thanks that helps a bunch.
I m thinking hard about the 405CP's....