#135128 - 05/27/07 08:08 PM
REAR END SAG.....Anyone Cure This?
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Junior Member
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Registered: 05/26/07
Posts: 10
Loc: Near Pittsburgh
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Hello,
My 1999 GTP 4-Door looks as if the rear end is slightly lower than the front end.
A little sag.
Anyone here have the same problem? If so, does anyone have a cure that won't be too complicated or cost too much?
Thanks!
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#135129 - 05/27/07 08:11 PM
Re: REAR END SAG.....Anyone Cure This?
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Member
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Registered: 03/07/05
Posts: 5158
Loc: Southern KY
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I think someone was using heavier Alero rear springs. Otherwise, probably time for new struts and springs in the rear.
_________________________
'13 Mustang 3.7V6 - MT82
'00 GP SE (L67 Swap, XP, Headers, 3.25")
'98 GTP, '01 Bonne
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#135131 - 05/27/07 09:41 PM
Re: REAR END SAG.....Anyone Cure This?
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Member
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Registered: 04/22/05
Posts: 3075
Loc: Cleveland, OH
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Why not do springs while you're back there. It would suck if you did the struts and then found out you had to go back and do the springs anyway.
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#135132 - 05/27/07 10:16 PM
Re: REAR END SAG.....Anyone Cure This?
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Member
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Registered: 05/23/03
Posts: 8078
Loc: Austin, TX
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A set of new KYB's will solve your issue.
Why not do springs and struts? Not doing springs will keep the cost down and you'll get the same results.
_________________________
Bobby
Died 5/1/08, resurrected 5/15/08
ASCD SD hood, 17" Bullitts, Overkill PCM, 3.4" Pulley, NGK TR55IX, K&N 9" cone filter, JimmyC D/P, U-bend removed, Flowmaster 40 series, Hooker big bore tips with resonators, S/B brake lines, drilled/slot rotors, GMPP handling kit, KYB struts, F&R strut supports, HID's, LED's, 2.5" Air Dam, red GTP overlays on custom badges, white rear insert.
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#135133 - 05/27/07 10:27 PM
Re: REAR END SAG.....Anyone Cure This?
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Member
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Registered: 06/29/06
Posts: 3618
Loc: CT, U.S.A
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The stiffest rear springs from GM would be part # 10258880 $37.55 each. Available from http://www.gmpartsdirect.com Grab a pair of KYB struts from Ebay, and new strut mounts No more sagging rear! 
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#135134 - 05/27/07 10:27 PM
Re: REAR END SAG.....Anyone Cure This?
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Member
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Registered: 04/18/05
Posts: 8901
Loc: Bradenton, FL
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im just getting lowering springs for the front 
_________________________
Corey Smith 
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#135135 - 05/27/07 10:27 PM
Re: REAR END SAG.....Anyone Cure This?
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Member
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Registered: 04/13/06
Posts: 6709
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I wish I did springs while I was in there. I put some Monroe Quick assembly sensatrac struts on a 99 GTP coupe. Lifted the rear quite a bit, but couldn't tell how much since there were 4 15" subs and one big arse amp in the back. But it definitely did the trick. Much easier than using compressors for the springs.
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 2002
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#135136 - 05/27/07 11:49 PM
Re: REAR END SAG.....Anyone Cure This?
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Member
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Registered: 05/23/03
Posts: 8078
Loc: Austin, TX
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Originally posted by 20gtp02:
I wish I did springs while I was in there. I put some Monroe Quick assembly sensatrac struts You should've used KYB's instead.
_________________________
Bobby
Died 5/1/08, resurrected 5/15/08
ASCD SD hood, 17" Bullitts, Overkill PCM, 3.4" Pulley, NGK TR55IX, K&N 9" cone filter, JimmyC D/P, U-bend removed, Flowmaster 40 series, Hooker big bore tips with resonators, S/B brake lines, drilled/slot rotors, GMPP handling kit, KYB struts, F&R strut supports, HID's, LED's, 2.5" Air Dam, red GTP overlays on custom badges, white rear insert.
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#135137 - 05/27/07 11:51 PM
Re: REAR END SAG.....Anyone Cure This?
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Member
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Registered: 04/13/06
Posts: 6709
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I did use KYBS, the Monroe's went on the 99 Coupe. My KYBs
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2002
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#135138 - 05/28/07 12:14 AM
Re: REAR END SAG.....Anyone Cure This?
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Member
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Registered: 05/23/03
Posts: 8078
Loc: Austin, TX
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Some day I'll learn to read sigs. 
_________________________
Bobby
Died 5/1/08, resurrected 5/15/08
ASCD SD hood, 17" Bullitts, Overkill PCM, 3.4" Pulley, NGK TR55IX, K&N 9" cone filter, JimmyC D/P, U-bend removed, Flowmaster 40 series, Hooker big bore tips with resonators, S/B brake lines, drilled/slot rotors, GMPP handling kit, KYB struts, F&R strut supports, HID's, LED's, 2.5" Air Dam, red GTP overlays on custom badges, white rear insert.
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#135139 - 05/28/07 01:55 AM
Re: REAR END SAG.....Anyone Cure This?
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Member
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Registered: 04/30/06
Posts: 3201
Loc: Groton, CT
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You all have such long sig lines! What's the use... who needs to read anyways? 
_________________________
 '97 SE with alot of mods
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#135140 - 05/28/07 09:24 AM
Re: REAR END SAG.....Anyone Cure This?
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Member
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Registered: 12/15/05
Posts: 5286
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Originally posted by drummerboy1307: You all have such long sig lines! What's the use... who needs to read anyways?  Funny, since none of us really talk to one another on here.
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 WizAire CAI w/9" K&N & HV3, 2.5" d/p w/h/f cat, Cobra CB, PowerSlot slots w/Hawk HPS, GR-2s, GMPP handling kit, NextLevel STBs, Pilot Sport A/S Plus tires. 98 L36/MM5 RaC
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#135141 - 05/28/07 04:07 PM
Re: REAR END SAG.....Anyone Cure This?
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Member
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Registered: 11/17/04
Posts: 712
Loc: Kansas (Redneck Country)
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I just recently replaced my struts and springs all around with KYB AGX struts and the stiffest springs that I could possibly get for a W-body (other than airbag suspension). they were Olds Intrigue springs (rears) and they made my car sit slightly higher. I can tell, but 99% of other people can't. I love the ride- firm and tight, but not so stiff that it jars me around, plus I can adjust the damping rate of my struts to be a littile softer/harder, etc.
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98 GTP GMPP handling kit, HomemadeFWI, MSD coils, Taylor wires, 180 drilled tstat, TR6IX plugs, Intense STD PCM, JimmyC DP, Thrasher shift kit (mild setting), AGX/Intrigue spring setup, drilled/slotted rotors with Hawk HPS pads. Hopefully more to come
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#135142 - 05/28/07 04:22 PM
Re: REAR END SAG.....Anyone Cure This?
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Member
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Registered: 04/13/06
Posts: 6709
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HAHAHA...sig length...I actually went to add more and I was maxed out in characters. I almost posted about giving me more characters!
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2002
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