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-   -   Rear susoension way too stiff on 1985 dually (https://67-72chevytrucks.com/vboard/showthread.php?t=454777)

ratty65 03-23-2011 11:41 AM

Rear susoension way too stiff on 1985 dually
 
Ok so I know these things are meant to carry heavy loads but the rear suspension is way too stiff. Right now when driving down the road if I hit a bump at over 35-40 mph the rear end almost wants to kick out on me. The truck has not been lowered and was wondering if there was anything I could do to soften it up a bit for now. My plans are to drop it in the future but for now just want to make it bearable and safer.

D13 03-23-2011 12:00 PM

Re: Rear susoension way too stiff on 1985 dually
 
Replace the rear springs with 1/2 a pack, or 3/4 springs with 1/2 a pack, but kiss your load capability goodby.

ratty65 03-23-2011 12:05 PM

Re: Rear susoension way too stiff on 1985 dually
 
Im not really worried about my load capabilities as i hardly ever carry anything. whne you say replace with a 1/2 pack are you saying replace withthe springs off a half ton?

jitteryguy 03-23-2011 12:37 PM

Re: Rear susoension way too stiff on 1985 dually
 
I removed 4 springs and all the over load crap, it lower'd the truck a little and soft'nd up the ride some, better tire's help'd the ride a bunch too. rides as smoth as my 1/2 ton did now. it wont handle as much payload as befor but still will handle more than I'll ever haul in it.

ratty65 03-23-2011 12:51 PM

Re: Rear susoension way too stiff on 1985 dually
 
Quote:

Originally Posted by jitteryguy (Post 4572256)
I removed 4 springs and all the over load crap, it lower'd the truck a little and soft'nd up the ride some, better tire's help'd the ride a bunch too. rides as smoth as my 1/2 ton did now. it wont handle as much payload as befor but still will handle more than I'll ever haul in it.

Im a newbee to this so excuse my ignorance. When removing the 4 leafs did you take from the bottom or top?

jitteryguy 03-23-2011 02:31 PM

Re: Rear susoension way too stiff on 1985 dually
 
from the bottom of the spring pack, then at the top theres a 1" block then the overload spring, I also got a set of the 2" lower'n shackles that AutoZone stocks, they fit ours trucks, theres a cross brace on the bed that needs to be trim'd where the shackle sits for clearance. my fenders are bout even with the top of tire with this set up.

ratty65 03-23-2011 02:41 PM

Re: Rear susoension way too stiff on 1985 dually
 
Quote:

Originally Posted by jitteryguy (Post 4572435)
from the bottom of the spring pack, then at the top theres a 1" block then the overload spring, I also got a set of the 2" lower'n shackles that AutoZone stocks, they fit ours trucks, theres a cross brace on the bed that needs to be trim'd where the shackle sits for clearance. my fenders are bout even with the top of tire with this set up.

I dont know if I want to do the shackles as I dont want the truck to have a reverse rake. if doing these shackles evens it out then I may look into it. Are these specific to our trucks or are these universal shackles? oh and would you know a part number by any chance?

Thanks for all your help.

Your truck is the reason my wiffe let me get a dually . She said I will have to wait to get the semi wheels but she likes the stance and looks on yours.

jitteryguy 03-23-2011 03:27 PM

Re: Rear susoension way too stiff on 1985 dually
 
your wife has good taste if ya she agreed to a dually !
mine is still a little high'r in the rear with this set up, but I would do the springs first and see how much more ya wanna go, the shackles will 2 or 3 set'n so ya wanna know where its at befor ya decide which set'n ya want.
I dont have a part # but they are a unaversal shackle, spring width is pretty common so they most all truck's


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