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Thread: 4.8 to a 5.3 swap.

  1. #1

    Lightbulb 4.8 to a 5.3 swap.

    2003 silverado w/4.8 and a manual 5 spd. 2wd. I'm installing a rebuilt 5.3 w/ a size above stock Howards cam. Will I need to tune my computer or will it be good since they are already set for a little rich condition? Thanks, Brian.

  2. #2
    Join Date
    Mar 2016
    Location
    BC Canada
    Posts
    69
    I ran my 5.3 all summer with a howards hot cam 219/228, no tune. It ran great. I've just sent my pcm out to be tuned finally
    1995 rcsb c1500, 4/6 drop, 5.3 L33, 5spd, 219/228 112LSA cam, LS6 springs, 799 heads, long tubes, magnaflow mufflers

  3. #3
    Join Date
    Nov 2009
    Location
    SAN ANTONE
    Posts
    765
    yes you can run your truck without a tune but if you want to get the most performance you can i would get a tune. We can provide you with a mail order tune, give us a call or email info@nelsonperformance.com 210-626-0278
    06 rcsb, 6two, 231/235, 4.11, pacesetter, 80e, 14 bolt, Nelson tuned
    2011 rcsb 6two swap in the works with 6l90 and boost
    FARMTRUC CAN GARGLE PEANUT BUTTER

  4. #4
    Join Date
    Mar 2016
    Location
    BC Canada
    Posts
    69
    What do you charge for mail order tuned ray?
    1995 rcsb c1500, 4/6 drop, 5.3 L33, 5spd, 219/228 112LSA cam, LS6 springs, 799 heads, long tubes, magnaflow mufflers

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