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Old 01-24-2007, 12:01 PM   #1
bulky
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1985 cab going on a 1977 chassis

Any headaches putting an 85 cab, nose and bed on a 1977 chassis? Both are 2 wd long beds. I know 97% of the things bolt up, but just double checking with the people that would really know.... .

I just want to make sure I get everything I need lined up before the swap (Cab mounts, radiator support placement etc....).

Thanks
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Old 01-24-2007, 01:59 PM   #2
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Re: 1985 cab going on a 1977 chassis

Get the mounts that go with the cab and you should be all set. I believe you will have to modify your front bumper/frame mounts to run the 85 bumper...Chris (captkaos) has a pic of how he did his, hopefully he'll chime in.

The headlight wiring will also need to be modified to work with the new front clip.
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Old 01-25-2007, 12:32 AM   #3
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Re: 1985 cab going on a 1977 chassis

Thanks for the tips.
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Old 01-25-2007, 06:16 PM   #4
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Re: 1985 cab going on a 1977 chassis

Correct. If you need a pic of the bumper, I can post a link...
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Old 01-25-2007, 07:28 PM   #5
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Re: 1985 cab going on a 1977 chassis

If you have a pic handy that would be great.
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Old 01-26-2007, 02:34 PM   #6
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Re: 1985 cab going on a 1977 chassis

here ya go:

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Old 01-26-2007, 02:36 PM   #7
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Re: 1985 cab going on a 1977 chassis

Beautiful red x's Chris.
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Old 01-26-2007, 03:31 PM   #8
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Re: 1985 cab going on a 1977 chassis

Weird, anyone else having that problem. they are linked to my captkaoscustoms.com website, and it isn't down.

http://www.captkaoscustoms.com/images/bumpertrim1.jpg
http://www.captkaoscustoms.com/images/modifiedhorns.jpg
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Old 01-26-2007, 04:04 PM   #9
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Re: 1985 cab going on a 1977 chassis

Pics look good. They are worth a thousand hacksaw blades..

Time to break out the plasma cutter.

Thanks again for the help!!!
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Old 01-26-2007, 04:22 PM   #10
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Re: 1985 cab going on a 1977 chassis

They are working now Chris...for some reason they weren't earlier...and I even copied and pasted the URL to a new window.
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Old 01-26-2007, 06:07 PM   #11
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Re: 1985 cab going on a 1977 chassis

Quote:
Originally Posted by bigblock73 View Post
They are working now Chris...for some reason they weren't earlier...and I even copied and pasted the URL to a new window.
That is really weird....
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Old 02-15-2007, 09:40 PM   #12
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Re: 1985 cab going on a 1977 chassis

So a cab from an 80's truck should bolt right on to a 70's frame with the mounts from the newer cab?
Core support will mount up no problems too?
Looking at a '78 or '79 stepside that is lowered and nice wheels. No engine, tranny and some seious rust issues in the cab. I have an '85 cab and clip in good shape.
I am having problems with emissions testing on the 80's trucks but prefer the look of the 80's so maybe this could be my answer.
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Old 02-15-2007, 11:00 PM   #13
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Re: 1985 cab going on a 1977 chassis

bulky you doing the swap on that white truck you got??
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Old 02-16-2007, 06:37 AM   #14
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Re: 1985 cab going on a 1977 chassis

Quote:
Originally Posted by kevinr1970 View Post
So a cab from an 80's truck should bolt right on to a 70's frame with the mounts from the newer cab?
Core support will mount up no problems too?
Looking at a '78 or '79 stepside that is lowered and nice wheels. No engine, tranny and some seious rust issues in the cab. I have an '85 cab and clip in good shape.
I am having problems with emissions testing on the 80's trucks but prefer the look of the 80's so maybe this could be my answer.
No the mounts need to match the chassis not the cab.

GM changed the size of the body mount holes on the chassis in the 80's.
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Old 02-16-2007, 11:49 AM   #15
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Re: 1985 cab going on a 1977 chassis

We got some people saying you need the mounts to match the cab and other say they need to match the frame. Which way is it?
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Old 05-11-2007, 09:37 PM   #16
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Re: 1985 cab going on a 1977 chassis

Allright, allright, I know digging up an old thread, but I didn't feel like creating another one. I am trying to put a '84 cab on a '74 chassis and guess what, neither cab mounts work! The '74 cab mount bolts are to short for the coresuport and the '84 mounts won't fit in the holes on the frame. So more or less it can be done with the help of something to enlarge the holes in the frame.
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