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Thread: Head\Cam swap GTG

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  1. #1
    on the 243s i got.. the crossover was blocked off in front, but open in the back.
    ill get pics up as soon as i can.. im still in the middle of reinstalling everything.
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  2. #2
    ok
    major major thanks to oleshifty and shadow sniper..
    got the truck done.. up and running.
    she runs rich.. she idles very rough when cold.. and misfires like a banshee when u hit 4000 RPM.. dunno whats up with that..sound like its hitting a rev limiter
    photos of the scanned data is here..
    http://www.facebook.com/#!/album.php...93&id=31401741

    Oleshifty and i are on maybe 3 hrs sleep..
    start up video coming soon.. have to upload it
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  3. #3
    Short video.. initial start up..
    im so tired.. and you know I had to be silly and have the lights on LOLL
    http://s586.photobucket.com/albums/s...t=MVI_0606.mp4
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  4. #4
    Join Date
    Jan 2009
    Location
    Round Rock, Texas
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    That sounds great! Can't wait till you get the updated tune in!
    Last edited by Duct_tape123; 09-13-2010 at 11:14 AM.
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    danger_ranger83: I see now why it cost so much to get a harness made... FML
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  5. #5
    that IS the updated tune for the upgrades we put in!
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  6. #6
    Join Date
    May 2009
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    (yes that video was taken at like 3am..sure his neighbors love him)

    It REALLY feels like it hits a rev limiter at 3800-4000. Pulls pretty strong until that mark then just misses like crazy and rpms stall. We tried in D, tried holding it in first....can cruise at 3500 smooth as can be, press pedal tad bit more and rpms just 'bounce'.

    Anyone have anything to check other then 'tune'. Which is what I'm leaning towards.


    My 'scanner' can be touchy, but we were seeing like 31 degrees of knock retard at one point. This was on premium fuel, and those 'rich' codes coming up.
    blown transmissions are about as useful as 97% of the guys on this forum

  7. #7
    Join Date
    Dec 2007
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    42lb injectors without a tune = most of your problem
    ↓↓↓click pic to go to garage↓↓↓

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

  8. #8
    Join Date
    May 2009
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    Quote Originally Posted by MidwestSS View Post
    that IS the updated tune for the upgrades we put in!

    We installed a nelson tune, that was supposed to cover cam/heads/injectors/his previous mods (which he already had tuned and dialed in)



    Truck runs too good at idle-3500 for it to be something mechanical. It would be a more gradual, you can hold it in first gear at 3600 or so rpm and it feels stock, go up 100 rpm and it bounces like crazy, give it more gas and it just stays at same spot. My truck did same thing stock at 92mph or whatever.
    blown transmissions are about as useful as 97% of the guys on this forum

  9. #9
    not only that, but in park, i bought it to 4k and held it for about 3 seconds.. no misses
    put it in drive.. get it up to 3800.. misses all over..
    could it be they didnt account for my stall?
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