Quote:
Originally Posted by 03SVTCOBRA
Pistons are the weakest link... ask me how i know.  There are a bunch of people making near 1k rwhp on the stock blocks still though.
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Im not 100% sure, but if I remember right, the fastest mod motor car uses a stock Ford mod motor cast iron block, and a stock cobra crankshaft. The blocks are good for upwards of 2k hp or so im pretty sure, but you have to "tweak" them a little