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Anybody EFI a Pontiac Motor?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by DesertDueler, Dec 8, 2001.

  1. DesertDueler

    DesertDueler 1/2 ton status

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    I want to put a pontiac motor in my Jimmy but need injection. Has anyone converted a chevy TBI to one?

    86Jimmy 4"&35"MTRs,87 burb 4"&33"MT,69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  2. DesertDueler

    DesertDueler 1/2 ton status

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    ttt


    86Jimmy 4"&35"MTRs,87 burb 4"&33"MT,69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  3. Pure Insanity

    Pure Insanity 1/2 ton status

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    I am not positive, but I think a TBI 454 has an adapter of some kind that puts the TBI onto a carb intake. My buddy has an 89 454 dually, it looked like a factory adapter to install the TBI. Might be someplace to look. If I recall, it had water running thru the adapter also.

    If ya can't stop.......Smile as you go under! [​IMG]
    PIC of mine from flblazers site<a target="_blank" href=http://www.flblazer.alloffroad.com/photo3.html>
    GO</a>
     
  4. DesertDueler

    DesertDueler 1/2 ton status

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    I know they make an adapter to put them on, but I was wondering if anyone converted the dist. to allow the computer to do the timing and know the firing. I would like to use the stock setup since its really cheap, but so far looks like I will be going holley.

    86Jimmy 4"&35"MTRs,87 burb 4"&33"MT,69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  5. pcorssmit

    pcorssmit 1/2 ton status

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    Try to get a hold of Donovan, I think he has some info on how to do this.

    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
     
  6. DesertDueler

    DesertDueler 1/2 ton status

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    OK i will PM him

    86Jimmy 4"&35"MTRs,87 burb 4"&33"MT,69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  7. dyeager535

    dyeager535 1 ton status Premium Member

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    How long were the 301's made? '80 CA cars, and anything '81 up with 301 would have the CCC dist...spark and timing computer controlled. Not sure how you'd work the whole thing out, but you could probably do it. Guys ont eh Olds list have been talking about it, its a fairly complex project, no one has had the money to dump into actually doing it though.

    Dorian
    My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>www.dorianyeager.com/index2.html</a>
    Why insist on counting when the ring gear has the tooth counts stamped in?
     
  8. DesertDueler

    DesertDueler 1/2 ton status

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    The 301s were junk and none of them made were computer controlled. So bad to the drawing board.

    86Jimmy 4"&35"MTRs,87 burb 4"&33"MT,69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  9. dyeager535

    dyeager535 1 ton status Premium Member

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    The 301's may have been junk (although my buddy with a 301 trans am might disagree slightly, somewhere in the high 13's low 14's in a heavy car like that ain't bad) but the fact remains, if the 301 made it into '81, it will be CCC. The A-cars in '81 (Regal, Cutlass, Monte, Grand Prix) all had provisions to mount the 301, although that doesn't mean it actually made it that far. Don't have my Hollanders here to check. Can't believe everything you see on the net, but apparently there were CCC 301's www.dorianyeager.com/index2.html
    Why insist on counting when the ring gear has the tooth counts stamped in?
     
  10. BigJohnson

    BigJohnson 1/2 ton status

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    Don't know exactly what your looking for but this might be of some interest <a target="_blank" href=http://www.customefis.com/gmheidist.html>http://www.customefis.com/gmheidist.html</a>
     
  11. Don 79 TA

    Don 79 TA Registered Member

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    you can look an ranceefi.com
    he makes a TPI setup for the pontiac. most of everyone i know use carbs on the pontiac, to EFI a pontiac requires some creativity and big dollars. a decent well preped carb and fuel system is all you need, then you can have money left over for E-Heads :) or an Eagle crank to stroke the 389/400 blocks to 470+ cubes

    for some pontiac info try:
    classicalpontiac.com
    performanceyears.com

    great Pontiac info, in particular to Jim Hand's articles/research.
     
  12. Mudzer

    Mudzer 1/2 ton status Author

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    For more good reading, try doing a search for

    Jim Butler Performance Parts

    Kauffman Racing Engines

    These two build some of the most wild Pontiacs out there. I think the Deck height and camshaft to crank dimension of the 301 is substansially different than the 400/455 engines. So, I am not sure if the Distributor will work from a 301. I will have to pull out the books to see. If you can EFI your Pontiac, let me know how because I have a 428 ready to rock. I think I would try Turbo City. They had Pontiac listed as one of their TBI engines.

    Mudzer 1978/91 K5
    <font color=blue><a target="_blank" href=http://www.mudzer.rockcrawler.com>www.mudzer.rockcrawler.com</a></font color=blue>
     
  13. DesertDueler

    DesertDueler 1/2 ton status

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    I have talked to both of those guys on the phone about other stuff, but no EFI. The 301s are different, but I am not sure if the dist. was the same or not. Pretty sure they are not. I already know a carb works awsome for power. I have my pontiac 350 pushing over 500 hp on nitrous. Not to ofter do you see a pontiac 350 run, let alone low 11s in a 3400 lb car.

    86Jimmy 4"&35"MTRs,87 burb 4"&33"MT,69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  14. DesertDueler

    DesertDueler 1/2 ton status

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    I have talked to both of those guys on the phone about other stuff, but no EFI. The 301s are different, but I am not sure if the dist. was the same or not. Pretty sure they are not. I already know a carb works awsome for power. I have my pontiac 350 pushing over 500 hp on nitrous. Not to ofter do you see a pontiac 350 run, let alone low 11s in a 3400 lb car.

    86Jimmy 4"&35"MTRs,87 burb 4"&33"MT,69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  15. Mudzer

    Mudzer 1/2 ton status Author

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    I had a fairly stock 400 which powered my car to 12.50 1/4 mile times. 60 Foot times were in the 1.60's. Can't imagine the motor if I had put some money into it!

    Mudzer 1978/91 K5
    <font color=blue><a target="_blank" href=http://www.mudzer.rockcrawler.com>www.mudzer.rockcrawler.com</a></font color=blue>
     
  16. pcorssmit

    pcorssmit 1/2 ton status

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    The 301s came in '81 Firechickens. They are a short-deck motor, I think (not sure, though) the Distributor is different. I thought Donovan had figured out a way to mix'n'match parts from a Pontiac HEI with a TBI Chevy HEI.

    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
     
  17. dyeager535

    dyeager535 1 ton status Premium Member

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    The CCC specific dist. drive shaft is the only "hard" difference between a CCC dist and non CCC dist, AFAIK. All the other parts can probably be swapped, but the shaft "top" is not set up for advance weights on the CCC ones.

    Probably hack the bottom off of a Chev HEI CCC dist. drive shaft, and drill a hole through it, and be done with your Pontiac conversion.

    Dorian
    My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>www.dorianyeager.com/index2.html</a>
    Why insist on counting when the ring gear has the tooth counts stamped in?
     
  18. Emmettology 101

    Emmettology 101 3/4 ton status

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    WHat did you find out as far as the motor mounts go? I ahve been wanting to swap in a Poncho engine, but haven't looked into it much. I know there is an adapter plate available for the trannies, but I didn't know about the motor mounts... What all needs to be done to the mounts?

    Mike

    <font color=green>"1024x768x256... Sounds like one mean woman."</font color=green>

    <a target="_blank" href=http://www.geocities.com/emmettology101>www.geocities.com/emmettology101</a>
     
  19. DesertDueler

    DesertDueler 1/2 ton status

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    I will make my own mounts when the time comes. I just need to figure out the EFI junk. I really hate fuel injection, but its the way to go since I travel alot and always head up north.

    86Jimmy 4"&35"MTRs,87 burb 4"&33"MT,69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  20. Donovan

    Donovan 1/2 ton status

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    Okay I have talk to desert dueler about this and now I will tell you guys. What I did to change a Chevy HEI TPi into a Caddy HEI TPI is removed the cap and rotor. I took off the distributor gear and removed all the guts for the Chevy HEI. ( This was a 7 pin Distributor from a 88 Corvette). The Caddy runs the same direction as the Chevy but what I found out is that all the internal parts of the distributor is identical to a Chevy. The distributor gear the shaft and everything is the same but the Extrenal housing. So it was very easy to do. So basically I changed it for a 4 Pin distributor to a Computer controlled 7 pin. Now as for the distributor turning backwards on the Pontiac I found know reason why it will not work. There is nothing on the magnetic pickup that says it needs to turn clockwise or counterclockwise. I am almost thinking that the pontiac distributor is identical to a Chevy Distributor inside just like a Cadillac. If anyone has a Pontiac HEI distributor that they would let me borrow, I would take a closer look at it. Pete do you have one Handy? BTW I called Howell Fuel Injection and they didn't know if the HEI would work or not. Let me know.

    Donovan
    <a target="_blank" href=http://www.rustbucket.rockcrawler.com>www.rustbucket.rockcrawler.com</a>
    Got Leafs??
     

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