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Thread: 4.8l or 5.3l OEM cats....for swap.

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  1. 08-03-2011 08:56 PM #1
    jetmech's Avatar
    jetmech
    jetmech is offline The Brown Guy
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    I have a stock Y-pipe assembly with cats from an '06 4.8L

    ~ Forged engine of some type ~ Ball bearing turbo of an unconfirmed size ~ 4L8000 trans ~ Beefy fuel system ~
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  2. 08-04-2011 02:55 PM #2
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    kerrige
    kerrige is offline Senior Member
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    Why are you choosing to keep the cats?
    ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06

    waiting to go in... 3.90s, 214/220cam
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  3. 09-05-2011 07:10 AM #3
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    pacobeagle
    pacobeagle is offline Senior Member
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    No particular reason, I've found a set of ss headers for $320....I figured I could get the stock Y-pipe for less. This is a budget build....later,once I have some extra $, I may do the headers.
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