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Will a TBI truck accept a GM performance crate motor...

Discussion in 'The Garage' started by wolfy87, Feb 6, 2004.

  1. wolfy87

    wolfy87 Registered Member

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    ..without doing away with all the stock sensors etc and using most of the original accessories? i.e. distributor, TBI unit, alternator, A/C? /forums/images/graemlins/dunno.gif Referring to one of the milder motors with 300-330 hp.

    Basically, will it bolt up without having to fabricate and hack a bunch of stuff up and still be able to pass emissions testing? /forums/images/graemlins/thinking.gif
     
  2. Thunder

    Thunder 3/4 ton status

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    You can make a GM 330 HO work with TBI but you will need to get a new chip burned.The 350 HO has too much cam for the stock chip to handle. You will also need the GMPP Vortec heads to TBI manifold ($400) or an aftermarket vortec carb manifiod and use a TBI adapter($250+-). It depends on the chip burner if you will be able to meet emissions with that engine. Also you will never make 330 HP with the stock 350 TB it only flows enough air for around 280 HP

    If you want to meet emissions, build a bit more power, And keep things easy. Just get a stock TBI crate engine. Then get Edelbrocks TBI manifold and cam kit. They also have a performance chip designed to work with those mods and will meet emissions. Then add a set of headers. Should be able to do that quite a bit less than a 350 HO.
    There are also aftermarket performance heads that work good with TBI. They sell for 500 to 900 bucks.

    If you want a performance crate TBI engine:sdpc 2000 Builds one based on that engine for TBI it makes around 280-300+ hp depending on your TB size.
     
  3. azblazor

    azblazor 1/2 ton status Premium Member

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    Generally yes. But you may have issues with getting the most HP out of it without modifing your TBI setup. Vacuum needs to be kept to acceptable levels for a TBI system to operate within it's design parameters (Cam profile).

    edit: Thunder said it better and quicker than I did /forums/images/graemlins/smile.gif
     

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