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Message: <blockquote data-quote="Steven" data-source="post: 472990" data-attributes="member: 9605">flycutting is essentially notching the piston to allow more lift and larger valves. By doing so you allow yourself to run much more aggressive heads and cam which in turn allows you to make much more power. Your machine shop, if competent, should be well aware of how to. A quick rebuild would be to send out and check over the pistons, rods, crank, block in order to check for any structural damage. Then have a machine shop turn the crank if needed, check the rods, balance the assembly and blueprint, as well as vat the block and install new bearings that match the cranks journal size. A well balanced motor is free horsepower. I use a scale so that I can measure the weight of my rods and pistons so I can make them all the same weight. You'd be surprised how much it can help.</blockquote>