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  1. #1

    Default Throttle body for 2000 silverado 5.3

    Anyone have experience with an aftermarket throttle body? How much differwence do they make and will an 80 or 85mm one work better with my mods: Vararam intake, BBK 1-3/4 shorty headers, Gibson Supertruck exhaust, MSD 8.5 wires, AC delco iridium plugs gapped at .060, Jet billet servo, Diablo tuner.
    Last edited by ToreadorZ; 07-27-2009 at 04:41 PM. Reason: spelling

  2. #2

    Default

    Won't make a big difference that would be worth the price to it. The best way to go is get your throttle body ported by a well known porter. Since you'll have idle issues if done incorrectly.
    -Devin
    Late Model GM Tuner/Owner Whiplash Intense Performance
    If intense Performance looks is what you are looking for, then we have what you need to give you IntenseWhiplash.com
    Website is under construction, PM us with any parts inquires.

  3. #3

    Default

    while contemplating a cam step-up (comp 206/212 115 lobe sep 800-5800 powerband grind #249-54-450-11) I've thrown on all the bolt-ons. The next step or option are a set of 1.85 rockers w/ pushrods and springs. I'm assuming that either or both of these mods would benefit from a larger TB. I'm trying to keep the grunt down low as I can't see the point in a 5000lb vehicle with a power band in the 4-6k range

  4. #4

    Default

    your grunt wont change much unless you change your cylinders heads to a larger ports or go to a wild cam with an basic operation range of over 1500 rpms or higher as for the throttle body thats basic engine performance 101 the more air you can force in the more power your gonna produce

  5. #5

    Cool Throttle body for 2000 silverado 5.3

    I see you have a Vararam intake. I have one a Vararam volacity stack in my throttle body and I think that would work better than a bigger t/body and compement the Vararam intake. Your stock t/body is good for up to 400 hp.

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