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Thread: 5.3L bolt-on questions

  1. #1
    Join Date
    Mar 2009
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    5.3L bolt-on questions

    Here are the current mods-

    Flowmaster after the collector.

    Mods for this week (by friday).
    -LS2 Ported LF Intake
    -LS2 Ported LF TB
    -LS2 Rail w/ 34lb injectors
    -Diablo Tuner (unless someone can point me to a custom tune, there are none local and dont get a response from mail-orders)
    -Ls2 Cam

    Questions-
    -should i go ahead and order a performance fuelpump? How does this look for a few mods to start?
    Last edited by mbrownlee; 04-26-2009 at 09:46 PM.

  2. #2
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    St. Anthony, Indiana
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  3. #3
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    Nelson Performance...FTW and either an ASA cam or A tr220
    2000 Silverado ECSB- 5.3 CAI, Pacesetter LTs, ORY- Pipe, Magnaflow XL, E-fan, Ported T/B , Nelson Tuned, Built 4l60e, Circle D Stall, 3.42s G80, 2-4 Drop, Hertz Highs, Rockford 501s

    2004 Buell XB12s

    Quote Originally Posted by LamboDoNoMo View Post
    "Never give up, NEVER BACK DOWN!!!"

  4. #4
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    Nice, I just emailed him. Im going to the track with about 15 chevy trucks in Baton Rouge, LA friday night and need to try and have these items installed by then! Any help would be awesome

  5. #5
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    i was told the ls2 cam gives decent gains for the price?!?. Read also that bottom end is sacraficed but the ported intake and TB should help that out!

  6. #6
    Join Date
    Jan 2009
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    If you paid for priority ship im sure you could have your tune by then. Also if you do want to get a fuel pump, Nelson Performance has walbro 255s.
    2000 Silverado ECSB- 5.3 CAI, Pacesetter LTs, ORY- Pipe, Magnaflow XL, E-fan, Ported T/B , Nelson Tuned, Built 4l60e, Circle D Stall, 3.42s G80, 2-4 Drop, Hertz Highs, Rockford 501s

    2004 Buell XB12s

    Quote Originally Posted by LamboDoNoMo View Post
    "Never give up, NEVER BACK DOWN!!!"

  7. #7
    Join Date
    Jan 2009
    Location
    Augusta, Ks
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    Theres a write up on the intake swap. Some people have not seen any gains. You may get top end but you loose low end torque. Truck intake FTW
    2000 Silverado ECSB- 5.3 CAI, Pacesetter LTs, ORY- Pipe, Magnaflow XL, E-fan, Ported T/B , Nelson Tuned, Built 4l60e, Circle D Stall, 3.42s G80, 2-4 Drop, Hertz Highs, Rockford 501s

    2004 Buell XB12s

    Quote Originally Posted by LamboDoNoMo View Post
    "Never give up, NEVER BACK DOWN!!!"

  8. #8
    Join Date
    Mar 2009
    Location
    Baton Rouge
    Posts
    11
    I did read about losing low-end torque but i figured that the ported intake mani, ported TB, injectors, and 255lph pump would help me out in that area.

  9. #9
    Join Date
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    I dont think the pump will help at all. You motor is gonna use the same amount of fuel and return the unused fuel to the tank. Can anyone confirm?
    2000 Silverado ECSB- 5.3 CAI, Pacesetter LTs, ORY- Pipe, Magnaflow XL, E-fan, Ported T/B , Nelson Tuned, Built 4l60e, Circle D Stall, 3.42s G80, 2-4 Drop, Hertz Highs, Rockford 501s

    2004 Buell XB12s

    Quote Originally Posted by LamboDoNoMo View Post
    "Never give up, NEVER BACK DOWN!!!"

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