INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

help with upgrade

Old Mar 9, 2012 | 08:08 AM
  #1  
Rangerpro1253's Avatar
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Default help with upgrade

Hi guys, need some help deciding if i should put headers on my truck when i install my XFI xtreme truck cam,(comp cam 54-452-11) 212/216 .520/.524The headers i would be putting on are OBX 1-1/2" long tubes. Will it help at all or just a waste of money? i am also getting a new set of 317 heads with better springs to handle the cam and they are going to be ported a little. This is going on a LQ4, 6.0L stock motor with 202,000 miles on it.

all input is appreciated. thanks
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Old Mar 9, 2012 | 09:11 AM
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Lts definitely are worth getting
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Old Mar 9, 2012 | 09:14 AM
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On a 202k engine I'd at least swap the lifters out as well, check stock cam when removed to look for any pitting or chewed up lobes on the cam.
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Old Mar 9, 2012 | 09:42 AM
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forgot to mention that i would be changing lifters at the same time as the new cam. this truck currently has a Blackbear tune but want some more power and then going to get a re-tune.
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Old Mar 9, 2012 | 12:54 PM
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Yes definitely put the headers on, they aren't really needed with that cam but will make your engine breathe easier to let out the full potential of your setup. I think you're going to like the powerband with that cam, I have its baby brother (54-451-11) in my 5.3 and it made power right off idle all the way to 6,000 rpm.
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Old Mar 9, 2012 | 02:30 PM
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A set of long tubes will definitely be an improvement
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