LY5 performance help
08-01-2010, 01:01 PM
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LY5 performance help
New to this site. I'm wondering if there are any easy to medium difficulty performance mods to wake up my LY5 5.3 in my 2008 GMC Sierra. Any info on cams would be helpful. the truck does have active fuel management so if i do cam work will i lose that capability. I currently run GMPP cai. Thanks in advance.
Last edited by lowered907; 08-01-2010 at 01:08 PM.
08-01-2010, 01:41 PM
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New to this site. I'm wondering if there are any easy to medium difficulty performance mods to wake up my LY5 5.3 in my 2008 GMC Sierra. Any info on cams would be helpful. the truck does have displacement on demand so if i do cam work will i lose that capability. I currently run GMPP cai. Thanks in advance.
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08-01-2010, 03:09 PM
#9
The FAST LSXRT intake is worth 20rwhp over your intake, its a simple swap. An exhaust system (Headers/cat back) are worth another 20hp or so. Comp Cams has some AFM specific cams avaliable that will drop right in, or you can change the valley pan, lifters, and trays to delete AFM and that will allow you to run over .500 lift.
Low,
Before you start anything, figure out what your goals are. IMO, you should start with a higher stall converter then a computer tune. Those two mods are going to "wake up" your truck nicely. If you want to swap the cam, delete the DoD. DoD cams are small and not worth the trouble of swapping the stock one out for, IMO.
08-01-2010, 04:49 PM
#10
New to this site. I'm wondering if there are any easy to medium difficulty performance mods to wake up my LY5 5.3 in my 2008 GMC Sierra. Any info on cams would be helpful. the truck does have active fuel management so if i do cam work will i lose that capability. I currently run GMPP cai. Thanks in advance.
False information,the ls2 was standard in all model year Trail blazer SS's...