id fix it.. swap in a keywayed crank.. once you get into a 6.0, then you need block, pistons, rods, crank cam.. bigger injectors.. (then perhaps a bigger blower to feed the bigger motor) bolts, gaskets and a lot of work... incliding dynotune.. that way you will have traded your running BBC for a set of used AFR heads and a bunch or 5.3 parts..
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Elwood:We're 105 miles from Chicago, we have a full tank of gas, half pack of cigarettes, it's dark out and we're wearing sunglasses.
Jake: Hit it.
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