368 to 472 swap issues
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 15 of 15
500, 472, 425, 368 Discussion, 368 to 472 swap issues in Cadillac Engine Technical Discussion; I am swapping out the 368 for a 472 in my car, its a 1948 Packard on a 80's ? ...
  1. #1
    Howsha Fern is offline Cadillac Owners Member
    Automobile(s): 1977? deville?
    Join Date
    Sep 2011
    Age
    38
    Posts
    4

    368 to 472 swap issues

    I am swapping out the 368 for a 472 in my car, its a 1948 Packard on a 80's ? model Cadillac frame and drive train. I know the 368 was only used a short time so that will help me figure out what the frame under this car is too.
    My problem i just ran into is. the oil pan hitting the cross member when i tried to place the motor. im not sure the year 472 motor I am working with i see 71 stamped in the side of the block. any help as to what i need to make this motor fit, on what everyone told me was a bolt in swap. the 368 motor i pulled is gone now i scrapped it after pulling the few parts i thought i needed.

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    the APEMAN is offline Cadillac Owners Fanatic
    Automobile(s): 1980 FBC
    Join Date
    Mar 2010
    Age
    52
    Posts
    219

    Re: 368 to 472 swap issues

    Do you have 368/435 RWD motor mounts or the ones with a huge stud sticking out?

    Both 368 and 472 were used in FWD and RWD and you could have a custom pan too.

    Pix?

  4. #3
    jayoldschool's Avatar
    jayoldschool is offline GM RWD V8 addict
    Automobile(s): 81 FWB D'Elegance coupe
    Join Date
    Sep 2006
    Location
    Ontario, Canada
    Age
    42
    Posts
    7,002

    Re: 368 to 472 swap issues

    Ape would know more than me, but I recall that 368 cars that have 472/500s swapped in have to use the 368 oil pan. Perhaps that is the issue.

  5. #4
    the APEMAN is offline Cadillac Owners Fanatic
    Automobile(s): 1980 FBC
    Join Date
    Mar 2010
    Age
    52
    Posts
    219

    Re: 368 to 472 swap issues

    RWD '77 up 472 and 500 swap can use a 368 or 425 pan along with oil pickup.

    The 368 oil pickup has a different style seal to the block so be extra careful to make sure it isn't sucking wind.

  6. #5
    drmenard is offline Cadillac Owners Connoisseur
    Automobile(s): 95 fleetwood 81 deville
    Join Date
    May 2003
    Location
    Massachusetts
    Posts
    1,004

    Re: 368 to 472 swap issues

    The 368 oil pan bolts up to the 425, 472 and 500, but when using on the 500 the very bottom has to be hammered or dimpled to clear the rod bolts, they can just touch the bottom. the pick ups are a different story. The pick up will not fit a 68 or 69 block, they fit a 70 on. But the tab that bolts to the main bearing has to be bent and a new hole drilled. I am using a 368 pan on a 70-472 and this is what I have done.

  7. #6
    the APEMAN is offline Cadillac Owners Fanatic
    Automobile(s): 1980 FBC
    Join Date
    Mar 2010
    Age
    52
    Posts
    219

    Re: 368 to 472 swap issues

    If you need a picture of a 1980 368 that came out of a Fleetwood to identify your situation just holler.

  8. #7
    Howsha Fern is offline Cadillac Owners Member
    Automobile(s): 1977? deville?
    Join Date
    Sep 2011
    Age
    38
    Posts
    4
    Thread Starter

    Re: 368 to 472 swap issues

    Mts had the correct pan for me. USED and mailed in a bag in box dripping at my doorstep. rear sump and pan bolted in perfect after 3 days cleaning pan. but now my newest issue. upgraded the transmission as recommended. but its cross member-tranny bushing mount is not lining up and my drive shaft is to long HAHAH DAMN projects. Being a Cadillac rear wheel drive 368 motor frame and drive train under my 48 Packard body. is there a way to figure out what years used this setup? Sadly the old motor and transmission wher removed from my yard by illegal scrappers while out of town, so i have no old parts to reference. so im not sure what tranny will fix this issue and survive a 472 motor and not take major cut and welds to make fit. any ideas? its a stock cadi frame and drivetrain just no idea what year or make

  9. #8
    drmenard is offline Cadillac Owners Connoisseur
    Automobile(s): 95 fleetwood 81 deville
    Join Date
    May 2003
    Location
    Massachusetts
    Posts
    1,004

    Re: 368 to 472 swap issues

    Pictures would help. If you are going to put in a TH400 transmission , they came with 3 different length tail pieces. Changing the transmission from one length
    tail to another means taking the internals out of the transmission.

  10. #9
    jayoldschool's Avatar
    jayoldschool is offline GM RWD V8 addict
    Automobile(s): 81 FWB D'Elegance coupe
    Join Date
    Sep 2006
    Location
    Ontario, Canada
    Age
    42
    Posts
    7,002

    Re: 368 to 472 swap issues

    368 was 1980 and 1981 only (up to 84 for commercial chassis). RWD, DeVille and Fleetwood only. It would already have a TH400 in it. Driveshaft is easily shortened by any local driveline shop (or by you with a cut off wheel/grinder and a MIG welder).

  11. #10
    the APEMAN is offline Cadillac Owners Fanatic
    Automobile(s): 1980 FBC
    Join Date
    Mar 2010
    Age
    52
    Posts
    219

    Re: 368 to 472 swap issues

    There are still places that can cut and rebalance driveshafts. Find one and ask them exactly how to measure twice so they can cut once.

    Any idea how much the Packard weighs?

  12. #11
    drmenard is offline Cadillac Owners Connoisseur
    Automobile(s): 95 fleetwood 81 deville
    Join Date
    May 2003
    Location
    Massachusetts
    Posts
    1,004

    Re: 368 to 472 swap issues

    I thought the cross member was the problem. Is it worth all the cutting and welding instead of just getting the right part that fits? The 472's were all with long tail shafts and all the 425's and 368's were bolted to a short tail shaft.. The early 400's had better parts inside and more metal in the case. I would change the tail....

  13. #12
    Howsha Fern is offline Cadillac Owners Member
    Automobile(s): 1977? deville?
    Join Date
    Sep 2011
    Age
    38
    Posts
    4
    Thread Starter

    Re: 368 to 472 swap issues

    OK so I got a th400 tranny and i will have to move the cross member back and shorten the drive shaft, sorry for not posting sooner i had internet issues, 3ne3m03p85T55Z25U3b7i1d71f23e89ff11f3.jpg this is the car im working with

  14. #13
    drmenard is offline Cadillac Owners Connoisseur
    Automobile(s): 95 fleetwood 81 deville
    Join Date
    May 2003
    Location
    Massachusetts
    Posts
    1,004

    Re: 368 to 472 swap issues

    How long is the tailshaft on the th400 you have?

  15. #14
    the APEMAN is offline Cadillac Owners Fanatic
    Automobile(s): 1980 FBC
    Join Date
    Mar 2010
    Age
    52
    Posts
    219

    Re: 368 to 472 swap issues

    Here's some Packard eyecandy for inspiration from one of my other hobby interest sites:

    http://amfone.net/Amforum/index.php?topic=36767.0

  16. #15
    BRUCE ROE is offline Cadillac Owners Fanatic
    Automobile(s): Eldorado
    Join Date
    Jun 2009
    Posts
    217

    Re: 368 to 472 swap issues

    [QUOTE=Howsha Fern;12940402]OK so I got a th400 tranny and i will have to move the cross member back and shorten the drive shaft, sorry for not posting sooner i had internet issues, Attachment 236722 this is the car im working with [/QUOT

    If you had an 80s 368 frame & drive train, you should already have a TH400, which bolts right
    up to a 472/500. I wouldn't change anything with the drive shaft or trans mount. If the time
    comes to go through the trans, it can be built up some with 472/500 parts and still fit the car.

    Bruce Roe

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting