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Thread: 4.8L Project Horsepower - One step at a time

  1. #1
    Join Date
    Mar 2003
    Location
    San Antonio, TX
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    11,117

    4.8L Project Horsepower - One step at a time

    Hey Guys,

    Got a truck here that might be of some interest to most of you.
    It's nothing radical, but it fits 80% of what you guys have.

    So far, we've dyno'd this truck. Results were typical, so we're starting with an average truck with no issues.
    The only mods done to the truck before this dyno; we installed a shiftkit and servo.

    Here are the stock dyno numbers: 229hp/224tq




    Posting soon:
    Results from Tune, then CAI.

    Next UP:
    Jon is installing a 220-112 cam and 918 springs and 7955 rods.
    We'll dyno it today.
    check it out: http://24.173.56.12:8080
    (i'm playing around with different webcam solutions, so if the link doesn't work, be sure to refresh by hitting: ctrl button F5)



    Tomorrow:
    How much do longtube headers make?

  2. #2
    Join Date
    Dec 2007
    Location
    wichita falls, tx
    Posts
    3,140
    cool....i see u!!!...haha
    ↓↓↓click pic to go to garage↓↓↓

    408, WCCHL92s, nelson tune,4L80e 3600 Circle D,
    Intro Radicalli's

  3. #3
    Join Date
    May 2008
    Location
    Schertz, Tx
    Posts
    2,559
    Quote Originally Posted by farmtruc View Post
    Tomorrow:
    How much do longtube headers make?
    I thought you did this already and only got 9hp out of them...

    07 Z71 4x4, 6.0L, 3.73s, Turbonetics T76 @ 10 psi, 75 shot, Snow meth kit, PLX DM-100 wideband gauge, Nelson tune, Comp 212/216 .557/.561 114 lsa, 60# injectors, Yank 3000, 4L80E , Magnaflow - dumped, e-cutout
    Line-X, Pace Edwards Full Metal Jackrabbit bedcover

  4. #4
    Join Date
    Sep 2007
    Location
    SA, Texas
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    Quote Originally Posted by banker099 View Post
    cool....i see u!!!...haha
    lol... its jon!!! wait ill go run outside so you can see me too!!! LOL

    Her name is A Meli-
    "If everything is under control, you are going too slow."- MA

  5. #5
    Join Date
    Mar 2003
    Location
    San Antonio, TX
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    Quote Originally Posted by rutroe View Post
    I thought you did this already and only got 9hp out of them...
    I did a comparison with shortys and longtubes, and it was a different cam, I'd like to see what the gains are with a bigger cam. See if lt's shine a little more.

  6. #6
    Join Date
    May 2008
    Location
    Schertz, Tx
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    Quote Originally Posted by farmtruc View Post
    I did a comparison with shortys and longtubes, and it was a different cam, I'd like to see what the gains are with a bigger cam. See if lt's shine a little more.
    O I C

    07 Z71 4x4, 6.0L, 3.73s, Turbonetics T76 @ 10 psi, 75 shot, Snow meth kit, PLX DM-100 wideband gauge, Nelson tune, Comp 212/216 .557/.561 114 lsa, 60# injectors, Yank 3000, 4L80E , Magnaflow - dumped, e-cutout
    Line-X, Pace Edwards Full Metal Jackrabbit bedcover

  7. #7
    Join Date
    Feb 2007
    Location
    Sallisaw OK
    Posts
    2,230
    how awesome man, sit at home on comp and watch your truck getting done.

    i love it
    1996 gmc ext cab short bed
    6.6L 4l80e
    MY GARAGE

  8. #8
    Join Date
    Sep 2007
    Location
    SA, Texas
    Posts
    1,344
    doesnt it make you feel better???

    Her name is A Meli-
    "If everything is under control, you are going too slow."- MA

  9. #9
    Join Date
    Nov 2008
    Location
    Paris, Texas
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    1,747
    can't wait to hear the results

  10. #10
    Join Date
    Nov 2007
    Location
    Pittsburgh, PA
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    6,868
    Quote Originally Posted by farmtruc View Post
    Hey Guys,

    Got a truck here that might be of some interest to most of you.
    It's nothing radical, but it fits 80% of what you guys have.

    So far, we've dyno'd this truck. Results were typical, so we're starting with an average truck with no issues.
    The only mods done to the truck before this dyno; we installed a shiftkit and servo.

    Here are the stock dyno numbers: 229hp/224tq




    Posting soon:
    Results from Tune, then CAI.

    Next UP:
    Jon is installing a 220-112 cam and 918 springs and 7955 rods.
    We'll dyno it today.
    check it out: http://24.173.56.12:8080
    (i'm playing around with different webcam solutions, so if the link doesn't work, be sure to refresh by hitting: ctrl button F5)



    Tomorrow:
    How much do longtube headers make?
    that dyno sheet is good to see. at 4k rpms its only about 15hp less then mine and about the same torque. very interesting
    2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
    2002 Silverado - 427Lsx w/ Twin gt4202s
    2010 Silverado crewcab Z71 - 5.3litre w/ procharger
    2000 Wrangler - 5.3litre with some stance
    2014 Xsport- 3.5 Eco boost
    412 Motorsports

    it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference

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