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How strong are the 250 blocks?
Could I use the OE Crank?
Could I use the OE Rods?
Do they make a roller Cam for this engine?
[/quote] These blocks seem to be pretty stout even when using forced induction. The stock cranks can be used as well. You can use the stock rods up to a point, but there are 6" H-beam rods available that are application specific just for the 250, and are very reasonably priced. Roller cams are available for these engines, but the cores are hard for some cam companies to get from time to time, and are kinda' pricey. But those type of components are out there, and your goal of performance should be fairly easy to obtain....
