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vortec heads/injection??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by jms, Aug 12, 2001.

  1. jms

    jms 1/2 ton status Author

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    Getting ready for fuel injection - first thought I just get the '88 K5 in the paper, but was too late. I've followed the TBI vs TPI discussion - here's my question: Are vortec heads compatible with TPI setups ('88 to '92)? I'm mulling over redoing the whole top of my engine (rebuilt 350/37k/~1 quart of oil per 3000 miles/no smoke/haven't checked compression). Alternatively, I could drop in a TBI, there are a few for sale here locally (SBC/BBC). Oh yeah, and I'm clearly way out of the RamJet 350 price range. Suggestions? Thanks, michael

    <a target="_blank" href=http://desertrider.net>http://desertrider.net</a>
     
  2. solowookie

    solowookie 1/2 ton status

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    somebody is gonna have to jump in here, but here goes...

    vortec heads are off of 1996 and later trucks so why don't you get the intake etc. and injection off of one of those??? (not sure how it would all fit, but it should if you are good at that kinda stuff).

    <font color=blue> Jeff - may the force be with you</font color=blue>
     
  3. pcorssmit

    pcorssmit 1/2 ton status

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    I think you would need a special lower-intake for the Vortec heads.

    Pete

    '83 K5, 350 TBI (ex 6.2), 700R4, NP208, Dana 60/14 bolt, 4.56s, Detroits, 3" lift, 15-39.5x15 TSLs
    '97 Dodge 2500 4x4 CC LB Sport, Cummins 5 spd
     
  4. jms

    jms 1/2 ton status Author

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    Local recycler has vortec engines, I have asked. All have harness cut, no ECM. I suppose I'll have let them know I'm really interested so they don't cut the next one they get. I've realized I may have to develop a closer relationship [​IMG] so they put the computer aside ("It says injection didn't come in an '85" - duh) and listen to what I have in mind....

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  5. solowookie

    solowookie 1/2 ton status

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    yea I would think that would be a good idea cuz you'd definately need a computer out of one of them... not sure how hard it would be to fabricate in all the a/c stuff etc., but worst case scenario is you could fabricate in the dash etc. also (could be real nice).

    <font color=blue> Jeff - may the force be with you</font color=blue>
     
  6. CaptCrunch

    CaptCrunch 1/2 ton status

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    Basically you won't be able to swap on the vortec setup because it would require a ton of customn work and tuning which might not even be possible (thinking eliminate tranny sensors) Big time PIA. Best bet for vortech heads is to go w/ a TBI setup

    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
    <a target="_blank" href=http://www.geocities.com/milnerlives_2000/blazer.htm>http://www.geocities.com/milnerlives_2000/blazer.htm</a>
     
  7. solowookie

    solowookie 1/2 ton status

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    there you got it, the master has spoken [​IMG]...

    I'm going with the vortec heads and TBI setup so if you want I'll let ya know how it turns out! [​IMG] (gonna be a BIG project)

    <font color=blue> Jeff - may the force be with you</font color=blue>
     
  8. jms

    jms 1/2 ton status Author

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    I had tried to get a vortec engine that came from a truck with manual tranny (less sensors?) - no luck. So plan B is a complete TBI engine and then change heads and intake.

    Solo, are you going 350 or 454 with your TBI project?

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  9. Chris Demartini

    Chris Demartini 1/2 ton status

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    <font color=blue>Cant you just have the ECM programed not to read info from the trans sensors? Can I use vortec heads on my 91 TPI setup?</font color=blue>
     
  10. CaptCrunch

    CaptCrunch 1/2 ton status

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    You would have to find a place that could do it as the computers in those vehicles don't have proms or chips. All you can do is reprogram it w/ a programmer or find some place to make a new one.

    As far as I know there is no intake yet available to mount a TPI setup on vortechs. There has been talk up at Doug Rippies here (A big vette place here) that one is in the works and will hopefully be released soon


    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
    <a target="_blank" href=http://www.geocities.com/milnerlives_2000/blazer.htm>http://www.geocities.com/milnerlives_2000/blazer.htm</a>
     
  11. Blazer_Boy

    Blazer_Boy 1/2 ton status

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    It can be done. You have to get a set of vortec heads that has been drilled to accept a different intake manifold. www.paceparts.com sells heads that are already drilled for pre '87 engines. With that option open you could buy the edelbrock fuel-injection conversion kit for pre '87 motors and have everything you want to change it over (cha-ching). You could also do what I'm going to do and just buy and edelbrock manifold that just came out to run a carb on vortec heads (no drilling required). Option three is to buy the vortec heads and see if you can purchase the manifold assembly for a ram jet 350, it you can. If you do that you have to buy a new distributor and probably a heavier fuel pump and there goes your budget. If you really have your heart set on fuel injection than take the heads you have and have them ported and maybe some bigger valves. Then go junkyard hunting and find a TPI from the late 80's/ earlt 90's. Then get your butt to painless performance.com and get yourself a closed loop wiring kit. See, tons of ways to get FI. Swapping the FI setup off of a vortec motor would take the wits of MacGyver and the finacial backing of bill gates. Well maybe not that extreme but it would be a pain to get the tranny to cooperate. There could also be a bunch of crap under the dash to dig out...fun, fun, fun.

    <a target="_blank" href=http://www.geocities.com/bigkern76>http://www.geocities.com/bigkern76</a>
     
  12. MudbogAD

    MudbogAD 1/2 ton status

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    This year GM made a new manifold built for the tbi that will fit on the vortec heads.

    Adam
    79' Jimmy
    3.08's(sucks)
    35's(Bigfoot MT's)
    Np 205, th350, 12B, 10B
    3" suspension lift
     
  13. Blazer_Boy

    Blazer_Boy 1/2 ton status

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    Damn you beat me to it! Oh well I did a little research and found what you were looking for. Its part # 12496821 . Its aluminum too so you could polish it to make look purdy, lol.

    <a target="_blank" href=http://www.geocities.com/bigkern76>http://www.geocities.com/bigkern76</a>
     
  14. wayne

    wayne 3/4 ton status

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    Ya but did you see the price tag on it. It should be gold plated.

    <font color=blue>Wayne<font color=blue>
    <font color=blue>Happy Trails<font color=blue>
     
  15. solowookie

    solowookie 1/2 ton status

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    if you get this from <a target="_blank" href=http://www.gmpartsdirect.com>http://www.gmpartsdirect.com</a> you can pick it up for 276 which isn't too bad...

    you'd still be cheaper with the intake and heads then you would be with aftermarket heads and intake (heads being the big $$$).

    <font color=blue> Jeff - may the force be with you</font color=blue>
    <a target="_blank" href=http://coloradok5.com/gallery/Jeffs-Stuff>http://coloradok5.com/gallery/Jeffs-Stuff</a>
     
  16. Blazer79

    Blazer79 1/2 ton status

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    You could do something else. You could get a TPI setup from an 80s Camaro and buy a set of World Castings Torquer heads. Those are almost as cheap as Vortecs and have the old-style bolt holes.

    <font color=purple>//////
    <a target="_blank" href=http://blazer79.freeyellow.com>blazer79.freeyellow.com</a></font color=purple><font color=black>
    Soon a 454 K5!!</font color=black>
    [​IMG]
     
  17. jms

    jms 1/2 ton status Author

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    Thanks for all the info. Didn't mean to get the just FI off a vortec - I was looking into getting a whole engine. Thanks for pointing me to Pace - predrilled vortec heads look like an interesting possibility. A Painless harness is on my shopping list already. I've read about the GM TBI manifold. BTW, this whole idea is CK5's fault anyway [​IMG] - before I started hanging out here, the engine in my truck was perfectly adequate....

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  18. HarryH3

    HarryH3 1 ton status Author

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    Here's some info on a manifold base for Tuned Port Injection that will bolt to the Vortec heads. Don't know how soon they'll be available... <a target="_blank" href=http://www.sdpc2000.com/htm/vortec_tpi.html>http://www.sdpc2000.com/htm/vortec_tpi.html</a>

    <font color=black>HarryH3 - '75 K5</font color=black>
    <a target="_blank" href=http://www.angelfire.com/super/ThunderTruck>www.angelfire.com/super/ThunderTruck</a>
    It's a great day to be alive...
     
  19. ftn96

    ftn96 1/2 ton status

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    Just go with the TBI vortec heads setup from paceparts for 1100 dollars. Has everything you need minus the TBI unit.

    Does anyone have a grinding disk I can borrow?[​IMG]3/4 in progress[​IMG]
    <a target="_blank" href=http://www.nashvillek5.freeservers.com>www.nashvillek5.freeservers.com</a>
     
  20. BurbinOR

    BurbinOR 3/4 ton status

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    Cool stuff Harry. That website is a good one to watch for more goodies...............as someone said here, you can never have enough power. Tho I'm happy with my 406TPI, you know how it is, squeeze a bit more out of anything............

    <font color=blue>'79 ONE TON TPI K5 - See it at---&gt;<a target="_blank" href=http://www.blazzinor.rockcrawler.com>www.blazzinor.rockcrawler.com</a>
     

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