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500, 472, 425, 368 Discussion, 500 V864 - is this even theoretically possible? in Cadillac Engine Technical Discussion; So this could actually work...sounds like a great project! I am really excited to hear your progress! Are you going ...
  1. #16
    terrible one's Avatar
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    Re: 500 V864 - is this even theoretically possible?

    So this could actually work...sounds like a great project! I am really excited to hear your progress! Are you going for it?

  2. #17
    Fleetwood472 is offline Cadillac Owners Fanatic
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    Re: 500 V864 - is this even theoretically possible?

    Ya this could work, and you could save alot of gas in the process lol. I am trying to find out more info so I can try it on my 484. I wonder if anyone has been successful in converting this setup to their 472/500? It would be a sweet setup. I also was wondering if you could rig it up on a switch to kick it into v4 on the highway. - Justin

  3. #18
    PACADDYMAN is offline Cadillac Owners Member
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    Re: 500 V864 - is this even theoretically possible?

    Not Sure If Anyone Is Looking But I Know Of A Running 1981 Coupe With The V8-6-4 For Sale In Pa For $300. Also Just Saw A V8-6-4 Motor Only On Ebay For A Buy It Now Of $75.00 And You Pick Up

  4. #19
    LaneWvr is offline BAD EMAIL ADDRESS
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    Re: 500 V864 - is this even theoretically possible?

    I love the idea, love to hve it in my car!

  5. #20
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    davesdeville is offline Banned
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    Re: 500 V864 - is this even theoretically possible?

    A bunch of guys on the CB7 board have been discussing this and looks like one's going to try it. We'll see how that goes.

  6. #21
    terrible one's Avatar
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    Re: 500 V864 - is this even theoretically possible?

    Yeah they sure are. I really hope he does try it.

  7. #22
    Clay88 is offline Banned
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    Re: 500 V864 - is this even theoretically possible?

    Just a quick mockup to see if mounting the 368 valve train is feasable to a 425/472/500 engine. Non A.I.R. heads will be a bunch easier because of more clearance.
    -Clay88
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  8. #23
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    Re: 500 V864 - is this even theoretically possible?

    holy!

    someone is making it work!

    but....

    dosn't the 425 use a T-pedistal while the 368 had 2 bolts? THAT is what I don't understand.... how did you get them swapped over?

    The only parts I have from that 368 are the 4 selonoids, IIRC the rocker arms that go with them, and the valve covers... no pushrods, or none of the other rocker arms etc... that was back in NY and I doubt that car will be there if I ever go again.... so I sure hope I have enough parts.

    Can you please go into more detail...

    I remember I was told there was no way those will fit the 425/472/500 heads because they use 2 bolts vs 1 (or visa verca) and that another hold would have to be drilled and tapped in the head.... but it looks like you are doing it pretty easy....

  9. #24
    Night Wolf's Avatar
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    Re: 500 V864 - is this even theoretically possible?

    Thanks! I'll defintly check that out tomorrow.... getting late now

    good stuff....

  10. #25
    PACADDYMAN is offline Cadillac Owners Member
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    Re: 500 V864 - is this even theoretically possible?

    I Have A V8-6-4 Car That The Motor Will Be Coming Out Of Very Soon!!! If Anyone Is Looking For Parts, Computer, Whatever. Also Have A 1982 Coupe With A Knocking Buick V-6 Up For Grabs, Body Is Excellent Missing Grille Insert And Trunk Lid Is Dented. And Last But Not Least Have A 78 Sedan Minus Motor, Trans, And Driveshaft If Anyone Needs Any Parts Off Of That One Let Me Know And I Will Check Them Out, Previous Owner Began To Disassembly With Extreme Disregard Under The Premise Of Building A Demo Derby Car. Interior Not Too Busted Up For The Year, Door Panels And Seats Good, Light Blue Leather. Call Rich 484-695-0944 In Eastern Pa.

  11. #26
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    Re: 500 V864 - is this even theoretically possible?

    Eastern PA, damn, why can't I be in NY again.

    '82 Coupe with the Buick V6? that is RARE!

    how much of the '78 sedan is trashed, whats left and what is the interior color? do you have pics?

    About the V8-6-4, if nobody else will grab them, I would be interested in the 4 selonoids and both both covers, all the rocker arms and hardware that goes along with them too..... BTW does it run? why is it coming out of the car?

  12. #27
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    Re: 500 V864 - is this even theoretically possible?

    Remember to also get the spacer for the aircleaner or else the snorkel will hit the valvecovers.

  13. #28
    PACADDYMAN is offline Cadillac Owners Member
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    Re: 500 V864 - is this even theoretically possible?

    78 sedan - just took a close look at it basically the interior is all that is good they knocked the mirrors off with a crowbar and just banged up just about every panel on it

    82 coupe - grill and trunk lid will be taken off, motor knocks and trans is "iffy" another trans with it listed in classifieds as well

    81 coupe- just the v-8-6-4 for sale it idles perfect but has no power on road, was going to check into timing and 8-6-4 setup malfunction but found the 425 instead
    email me for pictures at a19chevelle70ss@aol.com

  14. #29
    eldrewado is offline Cadillac Owners Member
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    Re: 500 V864 - is this even theoretically possible?

    hey everyone im new to this forum (im on cadillacowners) i have a 71 eldo 500. and i intend to do the cylinder deactivation idea. i have been to the junkyard and have started taking heads off of an 81 368. i can also compare these to what i believe is a 500 in the same lot. does anyone know if the 368 heads can be ported by any reasonable amount and or if the valve diameter can be increased it dosnt look like there is much room to work with. the compression will be too high im assuming if u just bolt them strait on, so i will see if using two gaskets and or using different pistons will fix this im goin for 10.5 to 1 if i can. any info would be appreciated thanks

  15. #30
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    Re: 500 V864 - is this even theoretically possible?

    I honestly doubt anyone has seriously looked into 368 heads in terms of performance.

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