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Rear Sag
#769700 January 15th 2021 11:24 am
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1995 GMC 2500 Vandura 130k miles w/350 .Read a lot about sag and trying to fix w/o replacing springs. The front end floats a little and will be going with new shocks all the way round but rear is sagging. This van never had a trailer behind it and is low top conversion.,,,,
I understand rear sagging has a lot to do with how the front end feels and rides so wish to fix it all with shocks and some kind of spring helper.
Adjustable air shocks I've heard will not help but "Hellwig" may but read that if springs are warn out then won't.
New springs are like 275,5 leaf 2.25" each and Hellwig 9511-L35 is 276 + 150 for install kit.
I guess the question is,,,,will new shocks "KYB Mono" all the way round plus Hellwig work or am I wasting my time and should just get new springs? I don't want to go air ride...Thanks in advance.

Attached Files 20210115_111754.jpg
Re: Rear Sag
Dino #769703 January 15th 2021 12:33 pm
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New leaf springs is needed ... shocks will hold the weight ....for a while then your back to where you are now...


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: Rear Sag
Dino #769705 January 15th 2021 1:06 pm
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Since you're going to replace the shocks anyway why not try a load levelling shock that comes with a coil spring for the rears, its worth a try.

Advance has them
monroe-load-adjusting-shock-absorber-58658

Then if that doesn't do it you could then do the leaf spring replacement. What do you think about that Frscke?

Last edited by Doone; January 15th 2021 1:08 pm.

85 Chevy Beauville G20

Re: Rear Sag
Dino #769708 January 15th 2021 2:27 pm
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Buy it right or buy it twice ...


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: Rear Sag
Dino #769711 January 15th 2021 2:48 pm
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Rust N Dents
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I agree.
Anything other than replacing the springs is a band-aid fix that will just come back to haunt you later.

If the spring is the issue...
...replacing the spring is the fix.


[Linked Image]
Re: Rear Sag
frscke1 #769716 January 15th 2021 4:12 pm
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pooh-bah
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Originally Posted by frscke1
Buy it right or buy it twice ...


Truer words have never been spoken!


Re: Rear Sag
frscke1 #769719 January 15th 2021 4:17 pm
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I stand corrected!

However, I would still put the load levelers in the rear when replacing the springs.

Last edited by Doone; January 15th 2021 4:19 pm.

85 Chevy Beauville G20

Re: Rear Sag
Dino #769720 January 15th 2021 6:13 pm
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Thanks for all the advise, this topic is all over the net and so many different ideas....I'll look into load levelers because yes it needs new shocks all way round think they are original.
I guess they are just old,,,like I said this van never pulled a trailer but must have carried some heavy loads....
Monroe is 58575 for my yr 1995 G2500
I like the KYB Mono 565032 for the front , I guess mixing brands does not matter?

Last edited by Dino; January 15th 2021 6:20 pm.
Re: Rear Sag
Dino #769731 January 15th 2021 6:38 pm
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Those are for fronts,,,,says 58658 won't fit all I see is air shocks for my year....Good Grief!

Re: Rear Sag
Dino #769740 January 15th 2021 8:45 pm
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journeyman
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I had a similar sag and fixed it by replacing the 4/1 springs with 5/1 springs and it made a huge difference. Not just in looks, but ride and stability. This is the fix you need for yours. You'll only waste time and money replacing the other bits.


Jason
1984 Chevy G20 5.3L/4L60E
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