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500 Caddy in 50 Plymouth sd coupe

Discussion in 'The Hokey Ass Message Board' started by swaluda, Feb 19, 2013.

  1. swaluda
    Joined: Oct 12, 2012
    Posts: 127

    swaluda
    Member
    from pa.

    anyone ever do this? Anyone know where the exhaust manifold dumps. middle or rear of manifold? Anyone know what type tramsmissions are a bolt on? Just a very possible p***ing thought for a build, also with aluminum heads they are even lighter than most v8 motors, anyone ever know that. A little wider and higher though. Stan
     
  2. jetnow1
    Joined: Jan 30, 2008
    Posts: 2,201

    jetnow1
    ALLIANCE MEMBER
    from CT

    Turbo 400 trans (bop pattern on bellhousing) was stock. Most I have seen seem to have a rear dump on the manifold. Check Von Burkes thread- the best 55 caddy build for a lot
    on installing one of these engines as well as being a great read on it's own. Jim
     
  3. slammed
    Joined: Jun 10, 2004
    Posts: 8,150

    slammed
    Member

    The oil pan sump is a major concern. The Eldo's have a rear one.
     
  4. 40StudeDude
    Joined: Sep 19, 2002
    Posts: 9,562

    40StudeDude
    Member

  5. Moedog07
    Joined: Apr 11, 2011
    Posts: 519

    Moedog07
    Member

    Love the idea. 500 ft pounds of torque!
     
  6. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,756

    Rusty O'Toole
    Member

    I suppose it would be possible given unlimited time, money and talent. Then of course, it would help if your father owned a gas station when it came time to fill the tank and drive it.

    If you really want to put a Caddy in something there are a hundred better choices than a 1950 Plymouth. On the other hand, if you like the 1950 Plymouth there are lots easier engines to put in there than the Cadillac.
     
  7. Saxman
    Joined: Nov 28, 2009
    Posts: 3,556

    Saxman
    Member

    Well said. It can certainly be made to work but at first guess I'd say it ain't gonna be easy. Of course, if it were easy everybody would do it. How's your fab skills?
     
  8. 40StudeDude
    Joined: Sep 19, 2002
    Posts: 9,562

    40StudeDude
    Member

    I'd bet, with as light a body as the Plymouth is, he'll be p***ing more gas stations than I do in my '55 Caddy...and talk about torque...better find some good tires...!!!

    Of course, back in the good ol' days, putting a Caddy in a Plymouth was child's play...and I look at it this way...why not be different...??? That's why I built my Cadillac...it's different than a whole gaggle of '55-57 Chevies in one spot...not every rod run you go to has a ton of Cadillacs...be an individual...

    R-
     
  9. BORRACHO13
    Joined: Feb 6, 2008
    Posts: 1,097

    BORRACHO13
    Member
    from Menifee CA

    500 blocks are awesome!
    Part of hotroding is doing what is not considered normal! Stick with it, will be an amazing car I bet
    I have a 472 that I will put in to my 55 chev truck.. Hopefully next summer. We will see if tht deadline happens lol
     
  10. hippy killer
    Joined: Jan 11, 2011
    Posts: 210

    hippy killer
    Member

    go for man i love big caddy motors
     
  11. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,756

    Rusty O'Toole
    Member

    I'll bet Swaluda is happy to know putting a 500 Caddy in a 1950 Plymouth is child's play. Here I thought it might be difficult, knowing the problems people have run into putting much smaller engines in them.

    Now all he needs are complete instructions and parts list, which I am sure you can furnish, plus of course a child to help him do the job.
     
  12. kennyg1931
    Joined: Sep 14, 2009
    Posts: 58

    kennyg1931
    Member

    Install a stright sxle ./ that will stop all the clearance problems ?
     
  13. 40StudeDude
    Joined: Sep 19, 2002
    Posts: 9,562

    40StudeDude
    Member

    YOU obviously didn't read my post very well Rusty...here, let me put it up again so you can: Of course, back in the good ol' days, putting a Caddy in a Plymouth was child's play.. Note I said 'back in the good ol' days." Nowadays, that kind of information is lost what with everyone using SBC's and Fords in everything...

    Well, I can't say how difficult YOU think it is.

    Nope, can't help with any of it, .(including the child :rolleyes:)...he's on his own...I did offer a pair of exhaust manifolds..he's the one that's building it, not me. Besides, I'd have to have things go exactly my way...I'm a very hard taskmaster but thanx for your words of encouragement... that's what makes the hot rod world go 'round. :D

    R-
     
  14. plymouth1952
    Joined: Jun 30, 2008
    Posts: 2,324

    plymouth1952
    Member

    WTF is that about. It can be done but the amount of work is stargging The fire wall will need to be cut a R> 383/440/ is a killer tight fit. The fender wells will have to be kicked out as there in the way. the manifolds will work as they tuck under makeing the needed room for the sreering box. doable yes but hard but would run fast as hell. best of luck.
     
  15. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,756

    Rusty O'Toole
    Member

    OK so I'm wrong.... it really is easy..... nobody can tell you how to do it, they just know it's easy... or used to be easy, back in the good ol' days (before the 500 Caddy was invented) but now isn't so easy.

    Glad we cleared that up.

    By the way... I hate to admit it but of the V8 swaps I have seen in pre 55 Plymouth and Dodge cars, the Chev fits the easiest.
     
  16. bolt_boy_49
    Joined: Sep 17, 2008
    Posts: 42

    bolt_boy_49
    Member
    from USA

    I have been slowly working to put a 472 into a 1949 desoto and I have found that it fits quite well. I think my desoto is about 2 inches longer in the front than a Plymouth so that helps. If you switch to a rear sump oil pan and mount the engine so that the crank pulley ends up about 2 inches higher than the 218(?) that came out that should solve most of your clearance issues. The caddy engine also needs to go approx 4 inches to the p***enger side IIRC its been a while since I had a tape measure on it. Add custom headers and you should be well on your way to get it in there.

    The oil pump and filter is the only BIG problem. I actually cut down and welded an aluminum oil pump so I could use right angle pipe fittings and a remote oil filter so I didnt have to cut the cross member. I havent run that setup yet so I dont know if it will work.

    I am not done yet so I cannot offer advise about water pump/fan issues or the stock pedal locations.
     
  17. slammed
    Joined: Jun 10, 2004
    Posts: 8,150

    slammed
    Member

    SBC? The Cad will rule.
     
  18. plymouth1952
    Joined: Jun 30, 2008
    Posts: 2,324

    plymouth1952
    Member

    the 318 went in my 52 plymouth in about a week. not alot of work. tight around the trans hump area on the drivers side. the manifold was redone to help in that area. the mans asking for help thats what this page is about help. and to that this will be a hell of alot of work I agree the trans opening will be very tight. the area around the master will be an issue.
    the wheel wells will have to be cut way back as they bolt to the lower frame. the coresupport will need lots of work to fit the front of the motor.
    you will need to bring the motor up in the bay to clear the pan then your back to the trans tunnel again. in other words its not going to be easy but it can be done and i wish you luck.
     
  19. Sonny Day Out
    Joined: May 31, 2007
    Posts: 293

    Sonny Day Out
    Member

    All,

    Installing a rack and pinion allows you center the engine !

    Good Luck,
    Sonny
     
  20. jetnow1
    Joined: Jan 30, 2008
    Posts: 2,201

    jetnow1
    ALLIANCE MEMBER
    from CT

    Sorry for the mis id- I did a search on the thread and his came up first. The car and the entire thread are incredible and I am not even much of a custom guy- though there are a couple of threads on the HAMB that could convert me!
     
  21. 53 COE
    Joined: Oct 8, 2011
    Posts: 688

    53 COE
    Member
    from PNW

    Good source of info CAD500PARTS.COM

    A 1970 Coupe Deville 472 has been in my COE over 20 years:

    I used Eldorado exhaust manifolds for better clearance, there is a big difference. On the COE I have them switched side to side and upside down.

    There is a tight clearance oil pump, pic of it on the Cad500 site.
     

    Attached Files:

    Last edited: Feb 20, 2013
  22. zipoleon
    Joined: Dec 19, 2006
    Posts: 290

    zipoleon
    Member

    SBC , how boring . Rusty O I bet you drive a red '57 chevy too.
     
  23. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,756

    Rusty O'Toole
    Member

    Yesterday I drove a 1949 Chrysler Windsor with the original flathead six. Have never owned a 57 Chev in my life and have no plans to.

    I'm not a big Chev fan but prejudice does not blind me to the truth. I have seen several V8 swaps into pre 1950 MoPars and the Chev goes in easiest. I don't like it but it is the truth.
     
  24. swaluda
    Joined: Oct 12, 2012
    Posts: 127

    swaluda
    Member
    from pa.

    Fab Skills, whats that? Can i make it work? You Bet. Almost sounds like a rap song. No, Seriously.. Time wise ,im retired and have all the time i need. I fiqure if i originally wanted to sbc it that i would have lots of fab work anyway. Kind of ( How do you eat an Elephant ) One bite ay a time. Yeah, a Hell of a lot of work. Not just the motor, we (I) also have Rocker Panel, Floor pan replacement, Body Mounts, Rear Axle replacement, complete rewire to 12 volt ( fortunately i'm a master electrician by trade) complete interior redo, including dash and guages. On and On and On. Yeah, thats what im gonna do though. I have a brother in Colo Springs. if i need those exhaust manifolds i/ll let u know. I'm in Honduras right now and wont be able to hit the project again until May. Just lining up my ducks. Seems like most of u guys like the idea. With some nice aluminum heads and a slight motor modification, it should be one hell of a unit. Thanks, Stan
     
  25. unkamort
    Joined: Sep 8, 2006
    Posts: 1,012

    unkamort
    Member

    Who makes these aluminum heads of which you speak?
     
  26. swaluda
    Joined: Oct 12, 2012
    Posts: 127

    swaluda
    Member
    from pa.

    A company named Bulldog, good for 700 horse and with the aluminum heads you come in weighing less than a sbc with the cast heads on it. Stan
     
  27. phukinartie
    Joined: Oct 8, 2008
    Posts: 965

    phukinartie
    Member

    Your best bet is a small block mopar w/ a 904 trans and a A Body driver side exhaust manifold you will still have to do a little "shaving" of the p*** side firewall not much though, Those in frame springs are tight...If you sub frame it you got loads of room
    I think a caddy in a mopar will give it a real narrow resale market Good luck either way!
     

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