Question Throttle body options NBS

Discussion in 'Engine & Performance' started by Cavi Mike, Feb 12, 2018 at 4:29 PM.

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  1. Cavi Mike

    Cavi Mike New Member

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    2006 Sierra with L33 HO 5.3 with 1-5/8 long tubes, dual 2-1/2 exhaust, no cats and ported LS6 intake. Getting ready to install a 226/236 .600 lift cam and I’m told I really need a bigger throttle body at this point because this cam will push this engine deep into the 400bhp range.

    The LS1 throttle body has 2 separate connectors so don’t know how to make that work - and I’m told the LS2 is a 6-pin where mine is 8. I won’t convert to cable because I’m not giving up my cruise control. Does anyone have any recommendations or experience with this?
     
  2. HackMcMASTER

    HackMcMASTER Big Louie

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    need X-link and NW DBW throttle body
     
  3. benz88

    benz88 GMFS Member

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    no need to upgrade to larger TB. They flow alot from the factory
     
  4. 2005_Silverado

    2005_Silverado *

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    x link if u want to convert but no need
     
  5. ILuvJDM

    ILuvJDM GMFS Senior Member

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    That LS6 intake is probably hurting performance on your truck, I would switch to NNBS or TBSS and use an x-link with them.
     
  6. 2005_Silverado

    2005_Silverado *

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    that would probably put him deep into the 500bhp though
     
    ferraiolo1, Phildirt and ScottZ71Lyfe like this.
  7. Cavi Mike

    Cavi Mike New Member

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    I went with the LS6 intake because they work better higher in the rev range, past the 6k mark. Stock cams don't have any use up there so it's easy to see why the TBSS intake is better, but I'm stepping beyond that point now.


    Why the need for the snotty post? The Crane Cams 224 will put a low compression LM7 well into the 400's, this is the WS6 Store High Lift ASA cam with more duration and more lift - and it's on a high compression L33. Also note I said Bhp, not whp.
     
  8. ILuvJDM

    ILuvJDM GMFS Senior Member

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    How much time do you spend at 6k+ rpm? And what's your redline set at? Unless you're revving to 10k, that powerband doesn't sound fun for a truck that weighs a couple tons
     
  9. GREENSIERRA

    GREENSIERRA GMFS Member

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    I would be more concerned with the header size and intake then the tb
     
  10. Cavi Mike

    Cavi Mike New Member

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    Shift point will be in the 6,800-7k range. LS6 intake and 1-5/8 headers are more than adequate at these power levels. Jumping to even 1-7/8" will maybe get me 5hp. But please, looking for throttle body info.
     
  11. GREENSIERRA

    GREENSIERRA GMFS Member

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    Sounds like you already know it all so a tb should be nothing for you to figure out.
    I also had a l33 in my truck before but what do I know.
     
  12. Spillerls

    Spillerls GMFS Member

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    Your stock TB is fine! But that's thing probs a slug with a power band that high and if you have a stock converter..
     
  13. Phildirt

    Phildirt n. fil-dert.

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    Spiller u finish porting heads yet or what
     
  14. Spillerls

    Spillerls GMFS Member

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    Nope work and weather been crap but soon lol
     
  15. Phildirt

    Phildirt n. fil-dert.

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    Work is valid, weather not so much unless your workshop is in the yard haha
     
  16. HackMcMASTER

    HackMcMASTER Big Louie

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    WTF is your problem. Get a life.
     
  17. Phildirt

    Phildirt n. fil-dert.

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    Fuck off.
     
  18. HackMcMASTER

    HackMcMASTER Big Louie

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    NO U!
     
  19. Phildirt

    Phildirt n. fil-dert.

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    YOure not the boss of me Hackysack Master
     
  20. HackMcMASTER

    HackMcMASTER Big Louie

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    Master Deez plastifgt
     

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