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Old 05-16-2008, 07:31 AM
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Cuda340 Cuda340 is offline
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Re: headers for 09 R/T manual challenger

Besides the variable valve timing, the 5.7 Hemi has an expanded MDS operating range, an increased compression ratio, improved port flow, and reduced restriction exhaust and induction. Other updates are crankshaft structural upgrades, a dual-mass crankshaft damper, floating pin piston design, valve spring design and increased oil pump capacity.
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