1985 cab going on a 1977 chassis - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bulky · 01-24-2007, 12:01 PM

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

bigblock73 · 01-24-2007, 01:59 PM

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.

bulky · 01-25-2007, 12:32 AM

Thanks for the tips.

**Captkaos** · 01-25-2007, 06:16 PM

Correct. If you need a pic of the bumper, I can post a link...

bulky · 01-25-2007, 07:28 PM

If you have a pic handy that would be great.

**Captkaos** · 01-26-2007, 02:34 PM

here ya go:

bigblock73 · 01-26-2007, 02:36 PM

Beautiful red x's Chris.

**Captkaos** · 01-26-2007, 03:31 PM

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

bulky · 01-26-2007, 04:04 PM

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

Time to break out the plasma cutter.

Thanks again for the help!!!

bigblock73 · 01-26-2007, 04:22 PM

They are working now Chris...for some reason they weren't earlier...and I even copied and pasted the URL to a new window.

**Captkaos** · 01-26-2007, 06:07 PM

Quote:

Originally Posted by bigblock73

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....

kevinr1970 · 02-15-2007, 09:40 PM

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.

84 400 · 02-15-2007, 11:00 PM

bulky you doing the swap on that white truck you got??

beaterC10 · 02-16-2007, 06:37 AM

Quote:

Originally Posted by kevinr1970

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.

SanitysBane · 02-16-2007, 11:49 AM

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?

SanitysBane · 05-11-2007, 09:37 PM

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.

01-24-2007, 12:01 PM	#1
bulky Bulky Join Date: Aug 2004 Location: Rhode Island Posts: 163	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

01-24-2007, 01:59 PM	#2
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,824	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. __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale

01-25-2007, 12:32 AM	#3
bulky Bulky Join Date: Aug 2004 Location: Rhode Island Posts: 163	Re: 1985 cab going on a 1977 chassis Thanks for the tips.

01-25-2007, 06:16 PM	#4
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Re: 1985 cab going on a 1977 chassis Correct. If you need a pic of the bumper, I can post a link... __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

01-25-2007, 07:28 PM	#5
bulky Bulky Join Date: Aug 2004 Location: Rhode Island Posts: 163	Re: 1985 cab going on a 1977 chassis If you have a pic handy that would be great.

01-26-2007, 02:34 PM	#6
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Re: 1985 cab going on a 1977 chassis here ya go: __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

01-26-2007, 02:36 PM	#7
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,824	Re: 1985 cab going on a 1977 chassis Beautiful red x's Chris. __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale

01-26-2007, 03:31 PM	#8
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	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 __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

01-26-2007, 04:04 PM	#9
bulky Bulky Join Date: Aug 2004 Location: Rhode Island Posts: 163	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!!!

01-26-2007, 04:22 PM	#10
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,824	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. __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale

02-15-2007, 09:40 PM	#12
kevinr1970 Senior Member Join Date: Aug 2004 Location: Everett, WA Posts: 2,316	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. __________________ 2009 Honda Fit CfC (bsf 44.9 mpg) 2000 Tahoe Limited 1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below 1991 GMC CrewCab Dually 4x4, just going to fix things up for now 1982/1989 K5/GMC Jimmy 2wd 1987 GMC 1/2 ton swb 2wd Crew (sold)

02-15-2007, 11:00 PM	#13
84 400 Sb 400 club Join Date: Nov 2005 Location: NH / MA Posts: 2,746	Re: 1985 cab going on a 1977 chassis bulky you doing the swap on that white truck you got?? __________________ 1984 chevy c10, built 400sb,.(SOLD) 77 K10 Project / daily driver "The Grinch" http://67-72chevytrucks.com/vboard/s...d.php?t=318363 1956 Willys Wagon (327 chevy) Project (Now Buick 225) 1980 Corvette L-48 4 speed 1992 Mustang GT built 5.0 5 speed 1985 C10 LWB Sold 1982 K10 SWB plow truck Parted out 1986 D30 M1028 fire brush truck Parted out

02-16-2007, 11:49 AM	#15
SanitysBane Registered User Join Date: May 2004 Location: Lubbock, Texas Posts: 2,121	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? __________________ '96 Nissan Pathfinder '02 Firebird Trans Am. '88 K5 Blazer

05-11-2007, 09:37 PM	#16
SanitysBane Registered User Join Date: May 2004 Location: Lubbock, Texas Posts: 2,121	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. __________________ '96 Nissan Pathfinder '02 Firebird Trans Am. '88 K5 Blazer Last edited by SanitysBane; 05-11-2007 at 09:37 PM.



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