Duramax Diesels Forum Truck of the Week
  #1  
Old 04-17-2017, 08:47 PM
Yuptown_lly Yuptown_lly is offline
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Default Lowered lly ride quality

I have a 2005 cc sb lly with 2" lowering shackles and the keys cranked to where the cvs sit flat. Truck is on 16"x10" mickey thompson classic 2s with 285/75/16 toyo a/t. Within the last year ive installed moog idler and pitman arm, moog tie rods, moog hub assemblies, just installed moog upper control arm and lower ball joints as well as blistein 5100 up front (the rancho rs5000 from last year were shot im sure the rear are to theyre junk). The ride is still stiff as hell, I also installed z71 style bump stops which im thinking about changing or removing maybe even. Id love some air bags for the rear and definetly plan to do blisteins in the rear soon. Ive been running 60psi front tires 55 rear and thinking about changing that to 50 all round? Whats yals input? Anybody else sitting at my height have a super stiff and bumpy ride?
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5" mbrp exhaust, 3" mbrp downpipe, s&b intake, Rudy's diesel turbo inlet, egr delete, profab economy flow intake tube, pcv reroute, fass titanium 150 lift pump, removed stock fuel filter assembly, lbz fuel pressure regulator, glowshift gauges, 2" lowering shackles, duramax tuner efi live[/I][/B]
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Old 04-17-2017, 09:00 PM
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c5fourj c5fourj is offline
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I run about 45 psi in my tires when just driving around. Ride is still very stiff, but it helps a bunch.
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2006 GMC cc/sb
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Overloads pulled, 2" drop shackles, torsion key bolts pulled, on 285/55/20
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  #3  
Old 04-17-2017, 09:16 PM
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WVRigrat05 WVRigrat05 is online now
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Mine had 40 when I checked today, I'm running 32 again in the rear and 35 in the front, it def helped. Dropping the front end, and new shocks next days off hopefully.
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05' Black Chevy CC/SB LT- Blackout Performance built motor/trans/tuning- Gone

The Blessed Hellride- 08' White GMC Sierra SLT CC/SB,
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Last edited by WVRigrat05; 04-17-2017 at 09:21 PM.
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  #4  
Old 04-17-2017, 10:09 PM
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whitetrash21 whitetrash21 is offline
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May or may not make a difference, but the 5100s have always stiffened up the ride on any Duramax I've owned. Much better handling when loaded but with no weight on them, the ride is definitely stiffer than with factory shocks.

Tires I keep at 55 front and rear since i'm loaded 90% of the time.
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  #5  
Old 04-17-2017, 10:24 PM
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1TRIKHD 1TRIKHD is offline
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Aren't the 5100's for stock ride height? If your lower then that up front the shocks could be part of the problem.
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2006 CCLB LT3 Victory Red

SDP Built Trans w/ Goerend G billet stator
S472sx-e .87/1.0ar w/ SDP Piping
Wagler street intake
Tuned by Aaron Wiebe
Custom 80" Trac Bars by MBS Diesel
ADII 165
Full Kryptonite Front end
PPE manifolds up pipes
Special Thanks to: Scott@ SDP, Aaron Wiebe @ All In Truck Performance, Lyle & Clay @ Bama Offroad, and Justin Goode @ MBS Diesel

Best time to date: 12.80 @ 110.78
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Old 04-18-2017, 04:02 AM
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SoCalMike SoCalMike is offline
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Pictures of the front end setup would help. You could be sitting on the jounce bumper too much. Unloaded tire pressure should be around 50 psi front 40 psi rear. To really know what psi you can run, find the load inflation chart for you tires.

I have a 285/70/17 E tires and run 47 front 38 rear unloaded. With my tires I can go lower but things get squishy and mpg goes to crap.

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Old 04-20-2017, 08:54 AM
SierraDuramax SierraDuramax is offline
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im thinking about lowering my duramax this week. I want to go 3 inch shackles in the rear and then just take the bolts out of the torsion bars, just nervous about the ride quality cause right now my truck drivers pretty good right now!!
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Old 04-20-2017, 09:46 AM
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Quote:
Originally Posted by SierraDuramax View Post
im thinking about lowering my duramax this week. I want to go 3 inch shackles in the rear and then just take the bolts out of the torsion bars, just nervous about the ride quality cause right now my truck drivers pretty good right now!!
I have 3" drop shackles and bolts out and mine rides pretty damn good for a CCLB
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2006 CCLB LT3 Victory Red

SDP Built Trans w/ Goerend G billet stator
S472sx-e .87/1.0ar w/ SDP Piping
Wagler street intake
Tuned by Aaron Wiebe
Custom 80" Trac Bars by MBS Diesel
ADII 165
Full Kryptonite Front end
PPE manifolds up pipes
Special Thanks to: Scott@ SDP, Aaron Wiebe @ All In Truck Performance, Lyle & Clay @ Bama Offroad, and Justin Goode @ MBS Diesel

Best time to date: 12.80 @ 110.78
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  #9  
Old 04-20-2017, 06:50 PM
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Have you pulled the overload?


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Old 04-20-2017, 08:38 PM
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1TRIKHD 1TRIKHD is offline
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Quote:
Originally Posted by bigmackmiller View Post
Have you pulled the overload?


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Overload is still in.
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2006 CCLB LT3 Victory Red

SDP Built Trans w/ Goerend G billet stator
S472sx-e .87/1.0ar w/ SDP Piping
Wagler street intake
Tuned by Aaron Wiebe
Custom 80" Trac Bars by MBS Diesel
ADII 165
Full Kryptonite Front end
PPE manifolds up pipes
Special Thanks to: Scott@ SDP, Aaron Wiebe @ All In Truck Performance, Lyle & Clay @ Bama Offroad, and Justin Goode @ MBS Diesel

Best time to date: 12.80 @ 110.78
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  #11  
Old 04-21-2017, 12:04 AM
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henery97 henery97 is offline
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FWIW i pulled the overload on my LBZ & it still rides like crap. Rancho 9000s & bags.
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  #12  
Old 04-21-2017, 06:15 AM
Yuptown_lly Yuptown_lly is offline
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My blistein 5100s are stock height shocks which should be about right because at factory setting my truck sat pretty low up front. My torsion bolts arent all the way out my cvs sit about flat, id like to go lower i just have to trim some more to clear the tires at a lower height. Im running about 50 psi front and 45 rear now it has helped the ride some but still very stiff, you hit a bump or pot hole brace yourself. Oh and railroad crossings can be a bit rough to.
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2005 2500hd crew cab short bed lt
5" mbrp exhaust, 3" mbrp downpipe, s&b intake, Rudy's diesel turbo inlet, egr delete, profab economy flow intake tube, pcv reroute, fass titanium 150 lift pump, removed stock fuel filter assembly, lbz fuel pressure regulator, glowshift gauges, 2" lowering shackles, duramax tuner efi live[/I][/B]
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  #13  
Old 04-21-2017, 08:30 AM
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WolfLLY WolfLLY is offline
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My lb7 rides like crap lowered.
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