Will 1 ton cab work on 1/2 ton?

[Blazin]

The arms that run the wipers under the cowl are sometimes referred to as wiper transmissions.
Its actually the splined stubs that the wiper arms go onto that are different, but swapping out the whole assembly is easier. If you leave the 81, and up stubs on there the 73-87 hood will clean them off the cowl the first time you shut it.

You can use a body lift and not have to cut the center out, and swap it with the tall one if using a 2wheel drive low center hump cab. Body lifts are more trouble than they are worth in my, and most others opinions. Its pretty simple to swap. Cut the low hump out on the stamped line, use a newer high hump center that's been cut out, you can trim it down a little at a time for a nice fit. then use self drilling screws/ bolts with a 3/8ths, or 7/16ths hex head to secure it. Metal roofing butyl tape works well for a sealant. The early to mid 70s 4 wheel drive cabs had a removable center hump. they work as well.

[bake74]

      The center hump in a 2wd is lower than a 4wd.  So yes, modifications will need to be done. 
     The hood hinges and wipers post were also mentioned.  These will have to be modified the 81 and up will not work on the 80 and below on these areas.   There are threads on this in the project's column.  Capt has done this conversion and has documented it very well, so you should check it out so you know what you are getting into.   
     http://forum.73-87chevytrucks.com/smforum/index.php/topic,9070.0.html

     I have sent you a pm also, check your messages.   Tom

[Kris_77stepside]

Oh, for some reason when you said transmission assemblies I thought you were talking about the actual transmission and it's parts lol.  I spent some time last night with the search bar finding out as much as I can about body part swaps and looking at some build threads.  Sorry, I'm not trying to sound stupid or make anyone mad, but I still don't understand the center hump thing.  Maybe I left out some information.  I have a 77 with a th350 and it is a 2wd truck.  The cab is from an 85, not sure what trans but believe it was auto but it is also a 2wd cab.  So if the new cab is an auto and 2wd,  couldn't I just use it as is without swapping out the center hump?  Thanks for the link bake74, but I'm not swapping the front clip.  I'm going to keep my 77 front clip.  Thanks.   

[thirsty]

You should be ok with the humps if both are 2wd automatics. Make sure you get the wiper assembly if you are going to use the 77 front clip. Another thing is you vin location will be different I believe. 77 was on the door post right? 85 will be on the dash. Are you getting a title with it?

[bake74]

You should be ok with the humps if both are 2wd automatics. Make sure you get the wiper assembly if you are going to use the 77 front clip. Another thing is you vin location will be different I believe. 77 was on the door post right? 85 will be on the dash. Are you getting a title with it?

      Yes, started with some 78's, I have seen some with the door vin# and some with the dash vin#, all 79's had them in the dash, even the blazer I have sitting in my driveway right now has it in the dash.

     [quote au.thor=Kris_77stepside link=topic=23019.msg191077#msg191077 date=1328974689]
 but I still don't understand the center hump thing.  Maybe I left out some information.  I have a 77 with a th350 and it is a 2wd truck.  The cab is from an 85, not sure what trans but believe it was auto but it is also a 2wd cab.  So if the new cab is an auto and 2wd,  couldn't I just use it as is without swapping out the center hump?  Thanks for the link bake74, but I'm not swapping the front clip.  I'm going to keep my 77 front clip.  Thanks.   
[/quote]
 

Well if you look at my name you can see that mine is a 77 and for transmission I have a th350.  The 78 cab is a 4x4 truck and it has a th400 trans.  So looks like it should work, just have a tall center hump cause there is no way I can cut mine out and swap it cause mine is completely gone.  Thanks.

     

     I am once again confused ?     In the above quotes you stated 77 a 85, and a 78 cab is a 4x4 truck and it has a th400.  Now the 78 cab was mentioned before you said anything about 2wd trucks, so I assumed the 78 was actually your 77 and that you just got flustered and put down wrong year.  Hence the reason for that different in humps, so if all are 2wd trucks, then you do not need to worry about anything, they should all be the same, so your in luck.

[Blazin]

You should be good with the center hump. For some reason I was thinking you had a 4x4!!

[Kris_77stepside]

     I am once again confused ?     In the above quotes you stated 77 a 85, and a 78 cab is a 4x4 truck and it has a th400.  Now the 78 cab was mentioned before you said anything about 2wd trucks, so I assumed the 78 was actually your 77 and that you just got flustered and put down wrong year.  Hence the reason for that different in humps, so if all are 2wd trucks, then you do not need to worry about anything, they should all be the same, so your in luck.

I finally see what happened now lol.  When I first started this thread I was asking about a 78 1 ton cab that was 4x4 with a th400 and if it would work on my 77.  But I didn't really post a whole lot of info when I started it.  The guy with that cab sent me some more pics of it and it turned out that it was in pretty bad shape.  So then I remembered that the guy I got the box from had a cab off of that truck which is where the 85 2wd cab comes from.  Hope that clears up any confusion.  Sorry about that. 

[Kris_77stepside]

Oh and the guy (with the 85 cab) is busy all week so I probably won't be able to check it out till next week.  He's going to try to get some pics of it for me though.  He said he has the title but does't know where it is.  If he can't find it can I just put my vin (which is on the door jamb) onto that cab or what would be my other options?  I'm gonna post a want add on craigslist and see if anyone else has a clean one.

[bake74]

      You did not hear this from me, but if it was me, if I got the 85 cab, I would use my vin# and put it in the door, I would also change out the dash pad if possible or at least take off the other vin# and cover it up so the hole is no longer there.  Just saying what I would do, not that it is legal or anything.

[thirsty]

I have seen quite a few of these trucks repaired that where rusted so badly that all the sheet metal around the vin had to be replaced.   

[firefighter]

I swear, I have no idea how a VIN plate could jump from one cab to another !!     

[bake74]

I swear, I have no idea how a VIN plate could jump from one cab to another !!     

      It's those pesky gremlins I tell you.  You know you are not suppose to feed them after midnight.