706 head number for 5.3 is this new

02-28-2005, 08:32 AM

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706 head number for 5.3 is this new

wen just got a new Z71 tahoe in with 706 on the heads is this a new head or same old 853s

02-28-2005, 03:06 PM

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706/862 are 4.8/5.3 castings