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Old 02-24-2011, 10:39 PM
Rush Hour Racing Rush Hour Racing is offline
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BBC crank casting numbers... which is the better crank

g'day all from Aust.. thanks for all help if offered.. i am wondering what is the best big block chev crankshaft made by the chev factory.. Mark 4 only..
is the 1053 or the 5140 crankshaft better..
casting numbers 3520, 3521 & 7416
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