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Thread: points to hei
          
   
   

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  1. #1
    jyardgirl's Avatar
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    points to hei

     



    i have the hei distibutor from my 350. can i install it in my 472 and do away with the damn coil system. thanks
    BARB

    LET THE FUN BEGIN

  2. #2
    cffisher's Avatar
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    The shaft length is the same between the caddy an chevy but the body is a different length and diameter where it drops into the block. Because of the larger diameter of the HEI cap there is a few inches between the block and body to clear the AC compressor. Another issue you may have if you still have the AC compressor is that the inner of the dual belt will rub on the cap. When they went to the HEI they switched to a wider single belt to clear the cap. If you are not running the AC anymore you can just remove it and run a shorter belt(s) straignt from the crank pulley to the power steering pump. It will clear the water pump fine. If you motor has the smog pump you will also have to put a slight dent /bend in the tube that goes between the heads. A few of the performance people make dizzys for these motors. The 472 68-74 ,500 70-76, 425 77-79, and 368 80-85. Were all the same basic block so the dizzys will interchange. The basic HEI got phased in starting in 74. All 75-79 were HEI’s with mechanical and vacuum advance. Starting in 80 some of them were computer controlled timing so they did not have the weights. 75-79 there was an EFI option for those motors the top side of those dizzys is the same only difference is there is a sensor in the stalk that gave a tach signal to the ECU to fire the injectors. Only other catch is the 75-80 seville and 79 eldorado used the 350 EFI Oldsmobile motor so those wont fit your 472.

    Hope this helps
    Charlie
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  3. #3
    jyardgirl's Avatar
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    it does charlie. i have already removed the ac and the smog crap. my engine is a 71 472. it that makes a difference.
    BARB

    LET THE FUN BEGIN

  4. #4
    jyardgirl's Avatar
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    my distributor is a msd hei. it does not want to sit all the way down to the block. can someone recommend a hei distributor that is good but not very expensive?
    BARB

    LET THE FUN BEGIN

  5. #5
    jerry clayton's Avatar
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    Barb----how about bringing us up to date on EXACTLY what parts are on your car and how you have them wired???

    Points???? Hei????Msd????? Msd dist????Msd box?????

  6. #6
    HOSS429's Avatar
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    you need help barb .. wish i were closer to you ..
    iv`e used up all my sick days at work .. can i call in dead ?

  7. #7
    jyardgirl's Avatar
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    i had a coil wired to a points distributor. i have a msd hei distributor off of my 350. it does not fit. i really want to get rid of the coil system. my coil is wired to my ignition along with the electric choke from the carb with new wire. the - on the coil is wired to the distributor. i put all new spark plug wires and spark plugs on the engine and a new coil wire. i even tried running a wire to my fuse box on the ignition fuse. it was no different. i pulled the coil wire off the distributor and put a spark plug in it grounded to the block. took a wire to the + side of the coil and got a spark off the battery directly. the spark plug did not spark. it is a new coil. just tired of being hung up on this mess. the coil is wired to my pink wire coming off my ignition.
    BARB

    LET THE FUN BEGIN

  8. #8
    jerry clayton's Avatar
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    take the wire to the choke off the coil!!!!

  9. #9
    jyardgirl's Avatar
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    it is not on the coil it is wired with a wire nut with the coil to the ignition. but i will take it off tomorrow. i really appreciate all the help with this. i know you guys are getting tired of me bugging yall over and over with the same problem.
    BARB

    LET THE FUN BEGIN

  10. #10
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    Quote Originally Posted by jyardgirl View Post
    i know you guys are getting tired of me bugging yall over and over with the same problem.
    I don't think anyone on the forum feels like that, Barb.

  11. #11
    jyardgirl's Avatar
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    thanks tech
    BARB

    LET THE FUN BEGIN

  12. #12
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    Smile

     



    Hey Barb,Dont ever think that we are tired of your questions. We all feel your frustration,please keep pluging away at this and dont give up.

  13. #13
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    This should help to wire your Points Dist . A Friend passed it on to me .
    Attached Images
    Wisdom is acquired by experience, not just by age

  14. #14
    jyardgirl's Avatar
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    thanks tango and chopped. but i am going back to hei. found one by dui for my engine. now i am selling my wii to pay for it. but i did find out today that i had the points wired correctly. my brand new advanced auto coil is crap. had a friend come over that knows coils and he tested it out by wiring it directly to the battery and got no spark either.
    BARB

    LET THE FUN BEGIN

  15. #15
    jerry clayton's Avatar
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    You will not get any spark out of the coil with the electric choke wired to the same circuit as it creates a dead short to the voltage

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