Factory Rear Sway Bar

[BadCompany]

How does the factory rear bar mount? Is it bolted to the axle tubes and frame as i have seen on other vehicles? If I could get my hands on a factory bar how easy would it be to put it on my 87 R10? Any pics or info would be greatly appreciated. Thanks

[86454k30]

The only "factory" rear sway bar came on 73-87 C30 dually pickups and on some 73-80 C30 single rear wheel trucks with the camper special package. No other 73-87 model was available with a rear sway bar from the the factory.

[BadCompany]

Thanks for the reply. If I found one would it just bolt on or would I have to fab brackets?

[RPOZ11]

Originally Posted by 86454k30

The only "factory" rear sway bar came on 73-87 C30 dually pickups and on some 73-80 C30 single rear wheel trucks with the camper special package. No other 73-87 model was available with a rear sway bar from the the factory.

I really wanted to do that to my C/20!
What all do I need?

[BadCompany]

Does sound like it would be less of a headache to just go aftermarket. From what I have read it also seems to be difficult to find a factory setup (kinda makes me want a factory bar more). Is there a company that sells the square u-bolts?

[86454k30]

Originally Posted by BadCompany

Does sound like it would be less of a headache to just go aftermarket. From what I have read it also seems to be difficult to find a factory setup (kinda makes me want a factory bar more). Is there a company that sells the square u-bolts?

Anyone who builds springs makes ubolts. You can even buy them from napa.

[86454k30]

Originally Posted by RPOZ11

I really wanted to do that to my C/20!
What all do I need?

Find a c30 and take the rear sway bar, brackets that attach sway bar to ubolts and ubolt plates.

[86454k30]

If you found one from a C30 you would need to replace your ubolts with the square style, opposite position of the round one and add the axle plates like a 1 ton has on the bottom of the axle. It would be much easier to install a new hellwig rear sway bar than try and install one from a c30...IMO.

[Mattman2010]

A rear sway bar off of a c30 will not fit on a c10/20 because the spring pads are mounted closer together on a c30 than on a c10/20. You won't be able to adapt a c30 rear sway bar easy at all so it is best to go with an aftermarket.
Posted via Mobile Device

[BadCompany]

Found a rear bar at pull-a-part yesterday evening. Got lucky someone had already taken the rearend and just left the sway bar hanging by the end links. Got the bar, u-bolt brackets, and round spacers that go between the u-bolt bracket and plate for 28 bucks. Didnt realize the springs were closer together on a C30. I guess I will have to knock the dust off of the old tape measure today and see if it will work on my truck. If not I made the trip worthwhile by grabbing a beefy 1.25'' front bar also!! Are the u-bolt plates the same on a C30 and C10?

[crewcabsquared]

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[RPOZ11]

I found this image online for the 1-ton trucks.
I believe that there are 2 different dually rear axle widths.
Ive wanted to do this to my C/20 and have seen a few trucks using this.

[RPOZ11]

Can someone post a good image for the 10-bolt truck rear sway bar; Factory & aftermarket?

[BadCompany]

I will try and post pics as soon as I get new bushings and find some u-bolts and u-bolt plates.

[cory d]

i saw a rear sway bar on a g20 van and the pick n pull today that i am temted to get. let us now how it handles after you put the bars on

[KrazyRay]

I parted a 77 K10 and it had a rear sway bar, but it was missing the bracket to the axle.
It looked factory. Maybe it was retrofit years ago.

[GM72K10]

Factory parts book showing rear sway bar

[N2TRUX]

Originally Posted by GM72K10

Factory parts book showing rear sway bar

Are you showing that for reference? It looks to be the breakdown for a C/K 30 DRW assembly. AFAIK GM never offered a rear sway bar on a C10 truck.

[RPOZ11]

Originally Posted by N2TRUX

Are you showing that for reference? It looks to be the breakdown for a C/K 30 DRW assembly.

It shows the R3, C3, & V3...denoting the 30 series applicaion.

Would the 3/4 C/20 Trucks use the same C/30 sway bar we all have shared above?

It would be cool if there was a GM drawing showing the 1/2 ton units.

This thread still needs to work towards showing what a 1/2 ton C/10 would get.

[GM72K10]

Originally Posted by N2TRUX

Are you showing that for reference? It looks to be the breakdown for a C/K 30 DRW assembly. AFAIK GM never offered a rear sway bar on a C10 truck.

Just for reference I happen to have that set up in my k30 dually cucv
Posted via Mobile Device

[RPOZ11]

Originally Posted by GM72K10

Just for reference I happen to have that set up in my k30 dually cucv
Posted via Mobile Device

Can you share a pic with us how it looks installed on your truck?

[txlowtrucks]

Do suburbans run a rear sway bar that will work on a half ton?
Posted via Mobile Device

[hatzie]

Originally Posted by txlowtrucks

Do suburbans run a rear sway bar that will work on a half ton?
Posted via Mobile Device

No. The only squares listed in the GM parts books with rear sways are the K/V30 & C/R30 trucks.

[RPOZ11]

Found an AfterMarket ADDCO rear sway bar for 73 & up trucks.
Not sure if it is still available.
hope its useful...

ADDCO #020-202
1'' Rear Sway Bar
1973-91 Blazer 2WD/C-10/C-20
1973-91 Blazer K10 4WD/2DR Tahoe/Yukon
1973-91 Blazer K20, K30 4WD
1973-91 Suburban/Yukon XL 4WD/1500
1973-96 Suburban/Yukon XL 4WD/2500/3500
1973-87 C10/C20/C30 2WD/4WD

http://www.jegs.com/i/ADDCO/020/202/10002/-1

ADDCO :
http://www.addco.net/aftermarket.htm

ADDCO Distributors (per their website)
http://02bbfb5.netsolhost.com/distributors.htm

[71blksuper4x4]

Bringing back up an old thread, but there is also the mid to late 70's 3/4 ton rear sway bar that should work on 1/2 tons and 3/4 tons. It was an option on the Camper Edition 3/4 tons. It has a cast piece that wraps around the bottom side of the axle and is held by round ubolts instead of the squared ones. It would have the correct width of the 42.5" spring pad spacing width vs the 40.5" 1 ton spacing.