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4.8L 08 silverado.... um need some help guys..

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Old Mar 17, 2011 | 05:03 PM
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From: oak grove ky
Lightbulb 4.8L 08 silverado.... um need some help guys..

well I'll be home soon and i ordered pacesetter headers and offroad y-pipe. I also have wayne angle block o2 sensor cel standoffs. what are some thoughts and concerns that i should have?
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Old Mar 17, 2011 | 05:14 PM
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As far as what? Install- For me it wasnt too bad, just take your time. Performance- I noticed immediate gains everywhere in the powerband. After tuning the truck was alot quicker. Sound- Is just amazing, I run open Y so it is a very agressive sound, surprisingly no rasp. Just very loud


Listen-http://www.youtube.com/watch?v=t_uWS6c4rmk
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Old Mar 17, 2011 | 05:25 PM
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From: oak grove ky
Thumbs up thanks for the quick reply

well some of it was about the install and part was the sound.... I am just worried about the o2 sensor reaching the o2 bung on the long tube headers and hope the angle blocks stop the cel from coming up
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Old Mar 17, 2011 | 05:37 PM
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Default O2 wires

I just pulled out the piston slap happy 4.8 and going with a forged 5.7 with headers. The wires for the O2 sensors seem pretty long so should not be a problem.

I tried a set of Dyanmaxx LS1 F body headers, but Nodda fit ! No way....

I want Kooks, but prolly go with the ebay specials.
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Old Mar 17, 2011 | 05:52 PM
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the 02 sensor wires are long enough they reach the 02 bungs on the long tube. the passenger side was a bit of a hassle for me since the bung hole is on top of the collector and you have to nudge the sensor between the longtube and the cab. the drivers side bung is easy since its on the side of the longtube.

i did mine solo and cracked one spark plug putting them on.
dont know about the angle blockers, never heard anyone using them here. most just get the cel tuned out.

regardless of the angle blockers, the longtubes only have two o2 bungs while your truck has 4 o2 sensors. iirc you only use the front two sensors.

Last edited by javzh; Mar 17, 2011 at 05:58 PM.
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Old Mar 17, 2011 | 05:52 PM
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My o2 wires were plenty long. You shouldnt have any issues

Idk about those cel blockers either. Get a tune and you will get more power out of the headers plus it will rid that cel
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Old Mar 17, 2011 | 06:28 PM
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Question thanx

well i will be pulling the plugs to put som e3's in i'll do both at the same time. the angle blocks are to keep the o2 out of the exhaust stream but they still read..... as for the tune i am tryiing to find some where to do it for me but around where i live i wouldn't trust anyone with a stone no less my trucks ecu. i do have the bullydog but i don't know how much thats going to help.
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Old Mar 17, 2011 | 07:37 PM
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Originally Posted by 08silverado48
well i will be pulling the plugs to put som e3's in i'll do both at the same time. the angle blocks are to keep the o2 out of the exhaust stream but they still read..... as for the tune i am tryiing to find some where to do it for me but around where i live i wouldn't trust anyone with a stone no less my trucks ecu. i do have the bullydog but i don't know how much thats going to help.
E3 spark plugs are junk
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Old Mar 17, 2011 | 09:23 PM
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Originally Posted by 2007chevy5.3l
E3 spark plugs are junk
X2 get some ngk tr55's
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Old Mar 17, 2011 | 10:54 PM
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Originally Posted by GMorBUST
X2 get some ngk tr55's
agreed
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