Thread: hei upgrade 258

  1. #1
    ray's Avatar
    ray
    ray is offline Junior Member
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    i tried to upgrade to GM hei , followed directions but chewed cam gear. is there a bronze
    distributer gear Instead of amc v-8 gear? need new cam now but worried about destroying another. Has anyone been sucessfull at this upgrade ? please advise. :-x [addsig]

  2. #2
    joeycj5's Avatar
    joeycj5 is offline Senior Member
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    Yes, I did this swap on a AMC 360. How or why did the gear get destroyed?[addsig]

  3. #3
    ray's Avatar
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    ray is offline Junior Member
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    I guess when i installed the distributer , the base flange was not seated on motor block so i forced it down . When i swapped out distributer gear it came w/washers or oil slingers, i think this slinger prevented dist. shaft from moving up or down slightly to maintain proper gear mesh and from seatin base. I have since removed oil slinger/washer. :-? [addsig]

  4. #4
    bluebelle's Avatar
    bluebelle is offline Senior Member
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    ray,

    Pulling a cam is no picnic. #$%!* I’ve always tried to use bronze gears when installing distributors - at least when it was possible. Just for that reason.

    A friend had the dist lock-up due to oil starvation and it too fried the cam gear (both) so we became acutely aware of that.

    I haven't pulled my 4L apart (yet). Do you know if there's a bronze or steel gear in there? :-?

    blue
    [addsig]

  5. #5
    Snitty's Avatar
    Snitty is offline Senior Member
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    my 4.0 is coming apart when the wallet will let me... and will go back together as a 4.6[addsig]
    93 YJ 4.0
    Spring Over, 33x12.50 Mastercraft Courser M/T, High Flow Exhaust, Diamondplate Rear Bumper, Trimmed Flares, 6\" spotters


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  6. #6
    bluebelle's Avatar
    bluebelle is offline Senior Member
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    Hmmm, where's the extra 0.6 comming from????

    blue

    Sounds interesting. . . [addsig]

  7. #7
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    MudderChuck is offline Senior Member
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    I´m getting old and they say the first thing to go is the old mind. Did a HEI conversion about a decade ago or so, when I was trurning the motor over by hand, checking out some other stuff, the cam kept wanting to push the distributor out of the hole. Asked a buddy to hold it down, while turning and it still came out. He said he wasn´t strong enough to hold it in. Didn´t seem right to me, I remember it was something with the steel pin holding the two shafts together, but am racking my brain trying to remember exactly what it was, with no success. It will come to me eventually, if I mull over it enough.[addsig]
    DO IT IN THE MUD!

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