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      09-26-2013, 05:31 PM   #64
RiverRunner
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Drives: 2014 M6 Gran Coupe
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Siamese cylinders, is what they were called when GM built the 400cid small block V8. That was 40 years ago, you couldn't go too far in increasing cylinder pressures or you'd blow a head gasket.
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2014 M6 Gran Coupe-Alpine White/Blk
2015 740i Sapphire Blk/Blk
2018 Tahoe RST 6.2
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