I've killed it....

Transmissions and Rear Ends

  1. Eauledoit11

    Eauledoit11 Member

    Messages:
    20
    Likes Received:
    4
    Joined:
    Nov 22, 2012
    I know how Charlie Brown felt when his Christmas tree fell over now...

    So I blew the motor in my 77 aspen. What are some pros and cons to an engine swap? If I went with another period slant six would it be as simple as plug n play? Where does one even acquire such an item in good enough condition?

    If the money is to be spent, would it be better spent in something more modern or upgraded?

    I've never tackled a job this big before and I figured I'd ask the experts! :D

    IMG_8966.JPG
     
  2. Mr C

    Mr C Well-Known Member

    Messages:
    292
    Likes Received:
    82
    Joined:
    Apr 22, 2014
    Cons to something different than a slant 6...you'll need motor mounts (schumacher makes this easy now) and the trans too.

    It's just work. You can do it.
     
  3. Master M

    Master M Well-Known Member

    Messages:
    300
    Likes Received:
    109
    Joined:
    Nov 22, 2014
    Look around and see if you can find a slant 6 for a more straightforward replacement. You will also be able to transfer any good parts from the old one. Is the blown motor beyond reasonable repair ?
     
  4. old yellow 78

    old yellow 78 Well-Known Member

    Messages:
    1,218
    Likes Received:
    381
    Joined:
    Aug 28, 2015
    Location:
    near Allentown, PA
    That's a nice looking sedan, with a very unusual color. I would look for a good Super Six if your engine is beyond repair. Much easier/cheaper to replace, and the /sixes are such great engines anyway. If the body is in good shape, it would be a great move to rebuild the new engine if needed before re-installing.
     
  5. BudW

    BudW Moderator Staff Member

    Messages:
    4,194
    Likes Received:
    1090
    Joined:
    Mar 4, 2012
    Location:
    Oklahoma City
    You have me wondering what might be wrong with your original engine. In many cases, I might be more cost effective and faster to repair your existing engine.

    If you are going to replace the engine, going back with a /6 (either 1-bbl or 2-bb (the 2-bbl being referred as a super six)) will be by far a lot easier than replacing with a V-8, for almost everything will need to be changed under hood.

    If you are dead set for changing over to a V-8, it might be easier to obtain a donor car for all of the little things you will need for the changeover.

    Items that are needed for a /6 to V-8 changeover (this is not a comprehensive list):
    Engine
    Transmission (if automatic)
    If automatic transmission – the transmission cooler lines.
    Kickdown linkage
    IF manual transmission – the Bell housing.
    K-frame (note: you can get engine mounts to retain the /6 K-frame, but cost for them might be about same as getting a small block K-frame).
    Engine mounts
    Throttle cable
    All engine pulleys
    All engine brackets
    In most cases the radiator necks are in different locations between /6 and V-8 – but not in all situations. I would plan on replacing the radiator.
    Engine wiring harness. It can be modified to fit if wanted.
    If equipped with A/C – A/C lines/hoses and engine brackets/pulleys (compressor is the same).
    If equipped with P/S, the P/S hoses, pump mounting brackets and pulley (pump is the same).
    I don’t know what state you are in (you might want to add a signature page with details) so various emission components might also be a factor.


    If converting to a Super Six, parts needed will be:
    Intake manifold
    Carburetor
    Throttle cable
    Kickdown linkage
    Air cleaner
    Fuel line (sometimes they are the same)

    Hope this helps.
    BudW
     
  6. Joe12459

    Joe12459 Well-Known Member

    Messages:
    884
    Likes Received:
    149
    Joined:
    Sep 21, 2012
    Location:
    Catskill Mountains, NY
    Hmm, be careful who you ask about engine swaps, LOL! You can go from relatively inexpensive and easy to outrageously expensive and complicated really quickly. If you don't want to rebuild/replace the slant six, a small block upgrade is a cost effective and relatively easy upgrade in these cars. Like BudW said, it makes it a lot easier if you have a donor car. Of course, if you really want to do something different, you can squeeze a big block in there, or even a gen 3 Hemi!
     
  7. Eauledoit11

    Eauledoit11 Member

    Messages:
    20
    Likes Received:
    4
    Joined:
    Nov 22, 2012
    The body is in fair shape. My neighbor backed into the driver door last year and I haven't gotten to that (its just as well I'm not fond of the color anyhow) but as far as the damage, I'm really not sure. I know I threw a rod, and I'm pretty sure it bust out the side of the block. I cant really tell what's what cause everything is covered in oil.
     
  8. Eauledoit11

    Eauledoit11 Member

    Messages:
    20
    Likes Received:
    4
    Joined:
    Nov 22, 2012
    I know the Aspens that year had a V8 option. But if i could fix the six, I'd rather do that. I haven't done anything to it yet cause I wanted to know what kinds of things to look at while doing a project of this magnitude. Moneypits and rabbit holes to avoid etc.
     
    Justwondering likes this.
  9. Joe12459

    Joe12459 Well-Known Member

    Messages:
    884
    Likes Received:
    149
    Joined:
    Sep 21, 2012
    Location:
    Catskill Mountains, NY
    The slant six is a great engine. If you're not looking for more power, I would rebuild what you have. It will be a lot more cost effective, and that engine is very reliable when set up properly.
     
  10. slant6billy

    slant6billy Well-Known Member

    Messages:
    2,868
    Likes Received:
    570
    Joined:
    Dec 21, 2011
    In my awkward assbackwards opinion- Donor car is a must. My suggestion: Get an 83-88 Diplomat, Fury or 5th that has a V8. That will give you the trans, motor and radiator. Now, your slant's a non lean burn 6, so you can easily go with a mopar performance distributor and plug right into the 2 wire dizzy pickup. Drive shafe should be the same as long as it is a 904 trans (on your slant ) and 904 on the donor. Again, just my opinion. You have options
     
  11. AJ/FormS

    AJ/FormS Well-Known Member

    Messages:
    1,108
    Likes Received:
    242
    Joined:
    Apr 26, 2016
    Location:
    On the Circle of the earth, Southern Man,Canada
    Where you at?
    I have a running, driving, 1980 Volare with a Hi-Comp, 77Aspen, SuperSix engine in it,with a bit of a cam. I'd let you have it cheap. The only good body parts left on it are the hood and the roof. The rest is pretty rotten.The 904 in it works real good too. But the rear gears are maybe 2.5s to 2.7s. I didn't build it to be fast, but to be fuel sipper, which it wasn't all that good at.:(
     
  12. Eauledoit11

    Eauledoit11 Member

    Messages:
    20
    Likes Received:
    4
    Joined:
    Nov 22, 2012
    so lets say the rod busted through the side of the block...is that repairable? Could i just bring it into any old head shop or what?
     
  13. Eauledoit11

    Eauledoit11 Member

    Messages:
    20
    Likes Received:
    4
    Joined:
    Nov 22, 2012
    haha right? I'm intrigued....how much do you think it would cost to ship it from Canada to Texas? lol
     
  14. AJ/FormS

    AJ/FormS Well-Known Member

    Messages:
    1,108
    Likes Received:
    242
    Joined:
    Apr 26, 2016
    Location:
    On the Circle of the earth, Southern Man,Canada
    Waaaay to much
     
  15. 7T8 Custom

    7T8 Custom Well-Known Member

    Messages:
    805
    Likes Received:
    274
    Joined:
    Oct 17, 2015
    Location:
    Vancouver, British Columbia
    Road Trip?
     
  16. 80mirada

    80mirada Well-Known Member

    Messages:
    1,113
    Likes Received:
    310
    Joined:
    Sep 3, 2012
    Location:
    Wisconsin, West Bend depends
    If your block is broken it is done for, the cost to weld a block is very pain. That said throwing a rod through the block on a late slant six is very unlikely. Can the engine be barred over(turned over by hand or tool)?
     
  17. BudW

    BudW Moderator Staff Member

    Messages:
    4,194
    Likes Received:
    1090
    Joined:
    Mar 4, 2012
    Location:
    Oklahoma City
    Can you go over, in detail, what happened before it “quit”?
    I haven't seen many /6 with tossed rods – but it can happen to anything.

    If block is damaged, then it is time for engine.

    If nothing has left sides (poked through) of engine, then there is a great chance you can repair existing.
    Pictures would be a big help.


    There is a car term: barring tools or barring the engine. I guess “barring” is derived from using a “bar” to turn engine over with, mainly term is used for setting valve timing or other operations.

    You should be able to use the harmonic balancer bolt and turn engine clockwise . It can take a bit of effort to move at times, so having a 24” breaker bar or similar helps.

    If engine turns but stops at one location then stop. Then start turning engine back over the other direction (counter clock wise). If it turns roughly 7/8ths of a turn before stopping, then a tossed rod is a good possibility.

    If there is a lot fresh oil in a certain location, then use a flashlight and mirror and you should be able to find a location.
    BudW
     
  18. Joe12459

    Joe12459 Well-Known Member

    Messages:
    884
    Likes Received:
    149
    Joined:
    Sep 21, 2012
    Location:
    Catskill Mountains, NY
    Ouch, I guess not.
     
  19. MiradaMegacab

    MiradaMegacab Well-Known Member

    Messages:
    1,586
    Likes Received:
    399
    Joined:
    Feb 27, 2011
    Location:
    Long Island NY
    JB Weld
     
  20. AJ/FormS

    AJ/FormS Well-Known Member

    Messages:
    1,108
    Likes Received:
    242
    Joined:
    Apr 26, 2016
    Location:
    On the Circle of the earth, Southern Man,Canada
    Back in the late 70s I had an ugly green 69 Barracuda 225/904. It was hotted up a bit with a "crate" long block from a local rebuilder. I hotted up the trans a bit and installed a 2800TC. I never did check the rear gears. Well a local kid rolled his 340 Demon and was looking for a car, and he had his eye on mine. The car was actually in mint condition and pretty, with it's white interior and ugly green skin. Anyway, he had a bunch of parts stripped off his rollover, and I told him I might consider a swap, if he could build a big enough pile of good stuff. A bit of time goes by and he shows up with a mountain of stuff. And of course me, at the time, being a dick, said the pile was not big enough. Well a bit more time goes by and he shows up with a second mountain of stuff. Well by now I'm getting suspicious of where all this stuff is coming from. But I look it over and nothing looks overtly new, and he's a good kid, so the deal is made. About a month goes by, and he shows up with my X car. Only now it has a windowed block and a pile of rags stuffed into the hole, and he is driving a 5 cylinder 225! He wants to know if I have a spare 6 banger,lol.
    I guess I shoulda teached him how to read the tach,lol. Apparently he was shifting it about the time it quit building rpms....... Anybody know how high a stock 225 can rev to before it quits reving? No? Me neither. I seen mine hit 4500 many times. And it seemed to have a bit more in her. I mighta seen 4800 a time or two, but it was long done pulling. Ivy green? Was that a color in 69? I bought that car about 6 months before I got married. I crashed it on our wedding day, driving like the dick I was.We never made it back to the party....