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2004 5.3L Avalanche Z66 build

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Old 02-14-2009, 11:23 PM
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Default 2004 5.3L Avalanche Z66 build

Buddy has a 2004 Avalanche that he wants to put an intake/exhaust and a programmer in it. I was just curious what HP he would expect to gain he could expect. I am thinking of somewhere in the 25-30WRHP and TQ gain. What i was looking for too was dyno sheets. Thanks for the help guys.
Old 02-16-2009, 12:19 PM
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could possibly gain up to 50hp with those mods
Old 02-16-2009, 05:05 PM
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dang. I didnt expect that much of an increase. But I can see that its doable.
Old 02-16-2009, 05:17 PM
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from what i have seen trucks can gain 15-18hp from a catback, and another 15-18 from a nice CAI, and a good 20-25 from a tune so yeah 50 isn't unattainable. and also parts start having a synergy and increase the gains when you get a good setup
Old 02-16-2009, 07:26 PM
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So the consensus is about 50HP. Anyone have a dyno sheet of a similar setup



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