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TPI injector question

Discussion in 'The Injection Section' started by yoshisv, Jun 15, 2006.

  1. yoshisv

    yoshisv 1/2 ton status

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    Ok i have a TBI 350 with a mild cam and a little more compression. I also have a powerdyne 9psi supercharger in my basement, and a tpi system bought but not yet delivered that i plan on installing the same time i do the supercharger install. My question is how big of a set of injectors will i need to properly fuel this setup? I have a cartech fuel management unit, But it can only do so much. Any help would be greatly appreciated.
     
  2. Russell

    Russell LB7 Tahoe Status Premium Member GMOTM Winner

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    With forced induction, you often need to run in the range of 30 lb/hr injectors
     
  3. southernspeed

    southernspeed 1/2 ton status GMOTM Winner

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  4. yoshisv

    yoshisv 1/2 ton status

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    Thanks for the info
     
  5. dyeager535

    dyeager535 1 ton status Premium Member

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    And just as an FYI, (the info IS over on thirdgen) the Ford injectors are a pretty good deal, even though the price has gone up recently. They used to be SVO injectors, and you may see reference to them on thirdgen as such, but they aren't called that now.

    Summit has the cheapest I've seen them.
     
  6. Russell

    Russell LB7 Tahoe Status Premium Member GMOTM Winner

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    If you go with Ford injectors, make sure to put some oil onto the o-rings so they seat properly right off the start. The Ford injectors are actually fairly significantly shorter than the stock TPI injectors are, and the vac leak they can cause is definitely a big one!
     
  7. dyeager535

    dyeager535 1 ton status Premium Member

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    Yeah that is one thing I thought I'd figure out once I got them. There was some significantly different information out there regarding the o-ring.

    One post I saw said replace with GM o-rings and problem solved.
     
  8. yoshisv

    yoshisv 1/2 ton status

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    I wish i knew that before, Cause i had a set of 30 pound ford racing injectors left over from when i sold my mustang. I sold the injectors a month ago.
     
  9. yoshisv

    yoshisv 1/2 ton status

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    What would be the best fuel pressure regulater for my application?
     

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