1973-87 Chevy & GMC Squarebody Cab Mount Removal/Install
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- Опубліковано 17 сер 2020
- Classic Truck Specialist David Welch gives a step-by-step guide on removing and installing Cab Mounts on 1973-1987 Squarebody Chevrolet or GMC Pickups. Dave also shows us what these bushings look like as well talking about why he prefers installing Urethane mounts when removing the factory Rubber type. Replacing the bushings will help you keep your sheetmetal aligned and your truck riding smoothly down the road.
Product Links:
1973-80 Urethane Cab Mounts
www.holley.com/products/exter...
1981-87 Urethane Cab Mounts
www.holley.com/products/exter...
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Almost 2 am ha ha I can't sleep and am finding all the vids I need for my square body project thanks to this channel lol thanks !!!
Thanks for watching!
Kick ass demo video Dave ! Easy to understand and makes a confident to tackle it himself!!
Thanks Adrian!
David's videos are the best how to videos on UA-cam
You really save alot of headaches showing us these videos thanks so much for details on everything it really helps so much 👍👍👍💯💯💯
Our pleasure!
Awesome video. Explained and demonstrated in detail
Thanks for watching!
When did Kurt Russell get into automotive wrenching?
Ha ha thanks for sharing your info.
Excellent video!
Thanks for watching!
You are Amazing. Thank You.
Thanks man!
This guy's the best
Thanks brother!
Awesome! Since the prior generation C/K series pickups (67-72) are relatively the same, these procedures should work for them as well, at least I'm hoping since I have a '68. I've cut out an opening in the floorboard of a Suburban 1500 in order to access the electric fuel pump so that i didn't have to empty the fuel or drop the tank. But I've never thought of cutting an access for a bad nut. I like it! 👍
To add, for those who didn't know this. At the 9:16 mark, when replacing that bushing it might be a good idea to have a look at the ground strap and replace it as needed since bad grounds can cause electrical issues.
Thanks for another great video David!
On the 67-72 there won't be a problem with nut access since they are NOT trapped in the sheet metal like the Squarebody's setup. Also, excellent suggestion on the Ground strap replacement! Thanks for the comment!
So need to do this, found one old rubber laying on the top of the frame a while back, I can't convince myself to cut into the floorpan though, it's the only damn thing that looks pristine on my truck lol
It's a must if you need new mounts. Consider it the necessary sacrifice.
Your video is the absolute best presentation on the subject of replacing cab mounts that I have seen. I have a question . The cab on my 2000 S-10 shifted driver’s side to passenger side about three quarters of an inch. What is going on with the cab mounts on my truck? Thanks!
Sounds to us like they are loose. check to see if they've worn out and loosened.
Great explanation!! Thank you!!
You didn’t mention what to do when the bottom metal are to far gone and where to get them?
I haven’t been able to get them!! Any suggestions??
Thank you so much for your help
Great show
You basically have to rebuild the metal frkm scratch
Bolts were froze on my 84. cage nuts just spin so I drilled a 3/8 hole for extension thru floor and 5/16 for a punch. Put punch thru cage nut to hold then broke nut loose. Worked well on all 4. Be sure to check that body lines match. Mine did not so had to go back and shim left side of cab 1/2" with large washers. 6mo later had to go back again cause new side step brackets attach to cab mounts. Hope this saves ya some time. fravar
Thanks for those tips!
Did you shim both front and rear driver side? Or just the rear? I have the same issues where the cab sits lower on the driver side
I'm confused on what the 3/8 hole is for. Could you please explain?
If you’d cut the bolt then you’d still have to cut the floor to get the rest out?
There are questions about torque in these comments. The "1980 GMC Light Duty Trucks Service Manual X-8032" shows the torque requirement for the 4 Body Mounting bolts on Page 2D-62. It is 45 ft-lbs. Page 2D-1 says it applies to 2WD 1/2, 3/4, and 1 ton, and 4WD 1/2 and 3/4 ton.
Great video! I have a 1981 K 10 and I’m having a problem with my gas tanks I believe it’s the vent hose and that’s it’s possible clogged. Anyway you guys can do a video on it or possibly how to remove the gas tank and clean everything out that would be great thanks! Jack
What's the specific problem you're having Jack? Difficult to fill, vapor locking, etc... ?
It’s difficult to fill up. It will only fill up my tank about 2 gallons of fuel when I click the handle over to automatic fill versus me holding the handle out whole time. My gas gauge works perfectly fine and it reads both tanks at the right amounts of gas is in them.
@@TheNinja8000 This is super common on Squarebody trucks. You don;t really have a problem that needs addressing, it's just a poorly designed fuel filler from the factory. Our '75 GMC shop truck suffers from the same problem. A long term solution to the problem would be a great new product!
BROTHERS Truck Parts okay thank you very much for the information!
I love the UA-cam Certified badge on his shirt 🤣🤣
Good eye!
@@BROTHERSTruckPartsTV it’s mint!!
thats one big wrench.
Super video, very helpful. I have a 1991 suburban that I have to change body mount on. BUT I need these washer.mine is ruined by rust. But is not to be found. anyone know?
Well, you're kind of in a spot there. You can grab some good used sleeves from the junkyard/eBay/Craigslist etc, or you can fabricate a new set using steel tubing a large washers. Unfortunately nobody is making replacements at the moment.
@@BROTHERSTruckPartsTV Thanks for reply. have to look online for someone then. very little of such parts here in Norway as it has been rusted. Keep up the good work :-)
Any tips for replacing the cab floor braces both the one that goes to the rocker/ kick panel and the main support channel on my 73 are in bad shape and I have the replacements just trying to figure out how to do it before I just dive in
Too many options to go through here, call Dave at his shop and ask his advice. 909-489-8646
Do u have a video of alignment of the cab if some of us pulled off the cab completely?
Not yet, but we do have plans to make that video soon.
Is there a way to do it by taking the cab braces ? I have to replace them anyway if not I’m going to sawzall through my bushings, don’t want to cut through my floor
If you have to replace them anyway then yes, you could cut into the brace to gain access to the bolt.
Would a bad body mount cause the fender and door not to line up properly? I'm looking on an older truck, noticed driver side body mount look pretty rough but there is a bit of a gap between the front fender and the door. The door closes okay, got to give it a slam but it isn't too hard to close.
Hello, Yes it would it is important to make sure the cab is centered on the frame.
I have a 1980 k10. Do I need a particular set? I didn’t see one for a 4wd half ton in my year
This Kit fits 3/4 Ton 2wd & 1/2 -3/4 Ton 4wd applications. Link: www.brotherstrucks.com/1973-80-CHEVY_GMC-TRUCK-CAB-MOUNTS-URETHANE-3_4-TON-2WD_4WD-STD-CAB/productinfo/NRG5104/
Looks very different from my '73 K-10 step.
Hi Dave Yup I am in NH. I am 62 yr;s old. I have been staying on the road doing my own stuff since 1975. I have to get on it with the 1986 K30 cab mounts. My brackets are still all there. I needed to see your vid cutting the hole. I dont have a lift but The part you said dont jack from that is angeld is what I need to replace. I am fresh out of bed rails. What do you think.
Fab it out of sheet. It's a basic floor support, so as long as you replace it with something equally supportive you'll be fine!
@@BROTHERSTruckPartsTV Thank you .
Hey brothers trucks, my 1970 c15 has the front end shifted to the passenger side, I loosened the rad mount bolts and I managed to shift it back to the driver side but I need to move it another 1/2”, can I loosen the cab and shift it more? Any tips on shifting the cab as well or is brute force required lol
Loosen the cab mount and apply brute force. It's going to be all about getting your cab square on the frame before you even try to get your fenders and hood to line-up properly. We have found it helpful to attach a come-along to the cab and anchor it to something solid, then just jack the come-along to tug the cab in whatever direction you need to move it. It works good because it allows you to make minor adjustments instead of big ones.
@@BROTHERSTruckPartsTV awesome I appreciate the help guys!
Does the 2001 Silverado have a cage but in the floorboard too? I got a broken off bolt can I just sawzall it outta there?
Sorry, we don't know. We specialize in 1947-87 trucks and have little knowledge of the 1988+.
I'm getting rid of the body lift. I'm also replacing the cab. Frame is a 1979 k10 and the cab is a 1985. The original bolts are gone and I will like to know what the sizes are of the original bolts. Any help would be appreciated.
Call our shop Monday and someone can check that out for you. 800-97-2767
@@BROTHERSTruckPartsTV man that's a fast reply. Guess I will call Tuesday. What is your number since you have me one digit missing.
@@hondapilot73 Sorry, 800-977-2767
Where is a good place to get a seat for a 1975 c20 pickup? What other years will fit that seat? Thank you
If your looking for a stock seat then junkyards and swapmeets are your options. We carry custom seats on our website www.brotherstrucks.com too. Anything from 1973-87 will fit.
Look for a tilting seat back. Much nicer
Does the mounts you installed in this video fit a 77? I ordered part number NRG6108 and says it’s for 81-87. The mounts look exactly the same
NRG6108 is for an 81-87 truck, we do carry mounts for the 73-80 truck also #NRG5104. The cab mounts themselves may be the same for both versions, it's possible the extra items in the kit are where the difference is. The shop is actually closed at the moment, so we can't check on this for you until tomorrow. You are welcome to wait for a reply here, or just call us in the morning which will probably be much quicker.. 800-977-2767
So the actual mounts ARE the same, the hardware and peripheral items are where the difference is. Please contact our sales department if you need to make an exchange.
BROTHERS Truck Parts sounds good thanks for the info. I have already ordered the correct mounts.
@@randomguy1807 Right on!
my radiator bushings are bad do I have to change all of the them or can I just change the radiator bushings I'm sure all of them is bad though
You could just do the radiator bushings if you want. Keep in mind that if the cab bushings are worn and you replace the radiator bushings it could cause your front fender to door alignment to change.
@@BROTHERSTruckPartsTV thank you
I wish you were my dad bro
I had to cut all my cages out on my G body it was so rusted and bad so I know the program sometimes it’s just a pain in the butt
100% Agree!
What is the solution if my washers are rusted beyond repair?
Well, you're kind of in a spot there. You can grab some good used sleeves from the junkyard/eBay/Craigslist etc, or you can fabricate a new set using steel tubing a large washers. Unfortunately nobody is making replacements at the moment.
LMC sells the hardware parts if yours are rusted
I have often wondered why GM couldn't put a dab on anti sieze on those body bolts at time of assembly.
I know. It eats up a whopping ten seconds to brush some on the threads. Too many don't believe in the use of anti-seize
How tight are they supposed to be any special torque setting?
30-35lbs inch once they bottom out
@@BROTHERSTruckPartsTV Thank you so much for getting back to me really appreciate it and I will torque them as you said 👍👍👍
was wondering what was the torque for tighten them down
We go until the bolt stops on the crush sleeve and then we torque to 35lbs.
@@BROTHERSTruckPartsTV ok thanks
Does this also apply to K5 blazers sir?
It's all very similar. Obviously it's not going to be exactly the same on a Blazer or Suburban, but all the tricks and techniques will be the same.
@@BROTHERSTruckPartsTV appreciate it man. Hopefully all of the nuts come out without a fuss.
Helps to know that no front end of the cab! Just the cab.
What is the thread pitch on the bolts and the caged nut?
Sorry can't remember off the top of our heads.
@@BROTHERSTruckPartsTV is their a way u could find out for me?
@@nickolausvassallo744 Pulled a front bolt out to check and on our truck it's 7/16 - 14. Should be the same across all Squarebodies. Good luck with your project!
@@BROTHERSTruckPartsTV are the back ones bigger?
@@nickolausvassallo744 Same
What are the torque specs on those bolts?
65-80 lbs
@@BROTHERSTruckPartsTV thank you
In park no engine or transmission 😂