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-   -   Rear control arm change (https://67-72chevytrucks.com/vboard/showthread.php?t=748064)

wpavlis 10-08-2017 05:30 PM

Rear control arm change
 
1 Attachment(s)
My father was in town this weekend so I had an extra hand. I needed to replace my rear springs from all the times my father and grandfather overloaded the old girl when They were on the farm. It seemed only fitting that he help me fix it. I reconditioned a set of control arms I picked up cheap on craigslist. I had hoped to get both done, but my old nemesis rust put a stop to that. We gave my grinder and cutoff wheel a good workout. I had to cut out the u bolt, front pivot bolt, and even the top spring mounting bolt out. The front pivot bolt is below. Tough work but it felt good to wrench with my father, even though most of the work was done with a grinder. Now I just need to find a torque wrench that goes to 200ftlbs for the new ubolt.Attachment 1697151

AussieinNC 10-08-2017 05:46 PM

Re: Rear control arm change
 
Yep, I have warned several here to make sure they have all new fasteners,,,,on hand before they start...

Most of these fasteners have been in place for 40 + years...and they dont like being moved in most cases...

Lots of rust remover spray...some heat sometimes and as you have discovered...split that nut with an air chisel and it will fall off....

Have fun...:chevy::chevy::chevy:

wpavlis 10-08-2017 08:35 PM

Re: Rear control arm change
 
Yeah, I tried heat and spray. Neither worked. I only have a small mapp gas torch, so maybe it wasn't enough. I don't have an air chisel so I cut some slots in the nut and used a chisel and hammer. I just decided to cut out the upper spring mount. The nut that goes in the frame was fused with the washer. I believe that any attempt to remove it any other way would have been futile. Having replacement hardware is always a good idea. I find that even when I can get them out the are at least somewhat damaged.

BugzC10 10-09-2017 03:45 PM

Re: Rear control arm change
 
Quote:

Originally Posted by wpavlis (Post 8056662)
Yeah, I tried heat and spray. Neither worked. I only have a small mapp gas torch, so maybe it wasn't enough. I don't have an air chisel so I cut some slots in the nut and used a chisel and hammer. I just decided to cut out the upper spring mount. The nut that goes in the frame was fused with the washer. I believe that any attempt to remove it any other way would have been futile. Having replacement hardware is always a good idea. I find that even when I can get them out the are at least somewhat damaged.

I'm going to be doing same shortly. Who are you buying the hardware from?

wpavlis 10-09-2017 05:41 PM

Re: Rear control arm change
 
I got the springs from gmc Paul's. I am pretty sure I got the spring mounts and u bolts from orange car and truck. I did end up buying a longer bolt for the lower spring mounts as the bolt that came in the kit was short. The front pivot bolt I used came with my used control arms. They came off an az truck and had no real rust on them. They are just standard grade 8 bolts available at any hardware store. I can measure length and size if you need it.

BugzC10 10-10-2017 10:49 AM

Re: Rear control arm change
 
Quote:

Originally Posted by wpavlis (Post 8057278)
I got the springs from gmc Paul's. I am pretty sure I got the spring mounts and u bolts from orange car and truck. I did end up buying a longer bolt for the lower spring mounts as the bolt that came in the kit was short. The front pivot bolt I used came with my used control arms. They came off an az truck and had no real rust on them. They are just standard grade 8 bolts available at any hardware store. I can measure length and size if you need it.

Thanks, but found the size...3/4-10 x 4”. No luck with local big box or hardware. Found a set on eBay.
http://www.ebay.com/itm/2-3-4-10x4-G...53.m1438.l2649

wpavlis 10-10-2017 11:04 AM

Re: Rear control arm change
 
I find that ace or true value tends to have a better selection than the orange or blue big box.

BossHogg69 10-10-2017 11:21 AM

Re: Rear control arm change
 
Quote:

Originally Posted by wpavlis (Post 8057874)
I find that ace or true value tends to have a better selection than the orange or blue big box.

x2 My local Ace Hardware is where it's at - much better bolt selection than HD or Lowe's.

GASoline71 10-10-2017 11:31 AM

Re: Rear control arm change
 
Yup... our local Ace Hardware has 2 isles dedicated to fasteners. Fastenal is the distributor that stocks them. Great stuff!

Gary

BugzC10 10-10-2017 11:42 AM

Re: Rear control arm cha
 
Quote:

Originally Posted by wpavlis (Post 8057874)
I find that ace or true value tends to have a better selection than the orange or blue big box.

I agree...I usually go to local Ace, but since we are still surrounded by water and only have one vehicle that can get through the water, I opted for delivery to the neighbors. My grandson retrieves the mail and UPS deliveries each day.

ho70 10-10-2017 05:13 PM

Re: Rear control arm change
 
http://www.bowtiebits.com/store/stor...ategory_ID=111

AussieinNC 10-10-2017 08:48 PM

Re: Rear control arm change
 
https://www.mcmaster.com/

or

LMCTRUCK...

http://www.lmctruck.com/icatalog/cb/full.aspx?Page=65


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