GXP stock sway bar or 34MM GMPP?
10-13-2016, 11:57 AM
#1
Launching!
Thread Starter
GXP stock sway bar or 34MM GMPP? Should I stick with a stock GXP sway bar or go with the thicker GMPP 34 MM one?
I do not know if there is any advantage to connecting the sway bar link to the strut as the GXP does stock as opposed to connecting it to the Lower Control Arm like it is on other W-bodies required if I go with the 34mm bar...
I do not do autocross etc my car is more of a street driver in and out of traffic, 1/4 mile straight car etc...
Is there REALLY any advantage with going with a control arm mounted 34mm sway bar instead of the 20mm or whatever it is STOCK ONE?
I do not know if there is any advantage to connecting the sway bar link to the strut as the GXP does stock as opposed to connecting it to the Lower Control Arm like it is on other W-bodies required if I go with the 34mm bar...
I do not do autocross etc my car is more of a street driver in and out of traffic, 1/4 mile straight car etc...
Is there REALLY any advantage with going with a control arm mounted 34mm sway bar instead of the 20mm or whatever it is STOCK ONE?
10-13-2016, 12:11 PM
#2
its all about how you want the car to behave, with the 20mm bar the car oversteers hard, with the 34mm bar, the car will be biased towards understeering, makes it alot more predictable IMO, i like the way it felt after the swap.
10-13-2016, 12:17 PM
#3
Launching!
Thread Starter
seeing as I put out a lot of power... thicker bar would for sure limit torque steer over the smaller strut mounted stock bar yes?
Also... with a thicker bar I am assuming that more pressure will be put at the point it connects to the lower control arm... can that little tab where it mounts hold up? One little metal flap with a hole is all it looks like on the required control arm....
Also... with a thicker bar I am assuming that more pressure will be put at the point it connects to the lower control arm... can that little tab where it mounts hold up? One little metal flap with a hole is all it looks like on the required control arm....
10-13-2016, 12:44 PM
#5
Should I stick with a stock GXP sway bar or go with the thicker GMPP 34 MM one?
I do not know if there is any advantage to connecting the sway bar link to the strut as the GXP does stock as opposed to connecting it to the Lower Control Arm like it is on other W-bodies required if I go with the 34mm bar...
I do not do autocross etc my car is more of a street driver in and out of traffic, 1/4 mile straight car etc...
Is there REALLY any advantage with going with a control arm mounted 34mm sway bar instead of the 20mm or whatever it is STOCK ONE?
I do not know if there is any advantage to connecting the sway bar link to the strut as the GXP does stock as opposed to connecting it to the Lower Control Arm like it is on other W-bodies required if I go with the 34mm bar...
I do not do autocross etc my car is more of a street driver in and out of traffic, 1/4 mile straight car etc...
Is there REALLY any advantage with going with a control arm mounted 34mm sway bar instead of the 20mm or whatever it is STOCK ONE?
10-13-2016, 12:55 PM
#6
Launching!
Thread Starter
my sway bar bushings are shot and so also the sway bar is rusty where it goes into the bushing... so I need a whole new setup anyway... 20mm or 34 mm?
It does handle like it's on rails already you are correct... just wondering if the 34mm with eliminate the torque steer from the Turbo setup.
It does handle like it's on rails already you are correct... just wondering if the 34mm with eliminate the torque steer from the Turbo setup.
10-13-2016, 01:02 PM
#7
I don't think much will help with 600+ horsepower, its really just about finishing and refining at this point. Drive train is set, a bigger bar, some poly bushings and the BMR package for the rear is really almost everything left even available without a full custom set up. After that you will have a tough time TRYING to spend, everything is done lol.
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10-13-2016, 01:09 PM
#8
my sway bar bushings are shot and so also the sway bar is rusty where it goes into the bushing... so I need a whole new setup anyway... 20mm or 34 mm?
It does handle like it's on rails already you are correct... just wondering if the 34mm with eliminate the torque steer from the Turbo setup.
It does handle like it's on rails already you are correct... just wondering if the 34mm with eliminate the torque steer from the Turbo setup.
10-13-2016, 06:20 PM
#9
Our problem is toe outo under alot of power when launching alignment is crucial. If you haven't upgraded your control arms you might want to do so also.
Also the biggest thing for you is limiting engine movement. Lower mounts in poly helps make the car very predictable.
If 6ou want a LSD they can be had for 500 from EP RACING.
Also the biggest thing for you is limiting engine movement. Lower mounts in poly helps make the car very predictable.
If 6ou want a LSD they can be had for 500 from EP RACING.
10-13-2016, 06:21 PM
#10
I don't think much will help with 600+ horsepower, its really just about finishing and refining at this point. Drive train is set, a bigger bar, some poly bushings and the BMR package for the rear is really almost everything left even available without a full custom set up. After that you will have a tough time TRYING to spend, everything is done lol.
10-15-2016, 10:45 AM
#14
Launching!
Thread Starter
I've ordered the 34MM bar up front along with better bushings on the LCA... but I was reading...
http://www.getoverkilled.ca/wbodytech.html
and it says that ADDCO makes part number 2179 a 25mm hollow rear sway bar... which is an upgrade from the stock rear sway bar.
Anyone use this yet? Could probably pair it with a 25mm universal bushing from Moog???
http://www.moog-suspension-parts.com/moog-k90400
I'm not sure I may contact moog and see if they know its a long shot...
http://www.getoverkilled.ca/wbodytech.html
and it says that ADDCO makes part number 2179 a 25mm hollow rear sway bar... which is an upgrade from the stock rear sway bar.
Anyone use this yet? Could probably pair it with a 25mm universal bushing from Moog???
http://www.moog-suspension-parts.com/moog-k90400
I'm not sure I may contact moog and see if they know its a long shot...
Last edited by Red_Zone; 10-15-2016 at 10:52 AM.
10-15-2016, 01:09 PM
#15
That rear bar is tough to find, a site called neverenoughauto supposedly will still take that order and fulfill, but its not listed?. The bar comes with bushings I believe, but I think you still need the end links. Or try Addco directly, most likely since not much interest the bars are made as needed.
They have the solid smaller rear bar still listed, but 2179 is hollow and bigger and would be the one I would consider first. even so this 639 bar is about 22mm compared to stock 18mm.
http://www.neverenoughauto.com/i-192...model%3DIMPALA
They have the solid smaller rear bar still listed, but 2179 is hollow and bigger and would be the one I would consider first. even so this 639 bar is about 22mm compared to stock 18mm.
http://www.neverenoughauto.com/i-192...model%3DIMPALA
Last edited by rottonj; 10-15-2016 at 03:11 PM. Reason: Added info
10-22-2016, 10:29 AM
#16
Launching!
Thread Starter
Man.. I got in the 34MM front sway bar... I don't see how this thing fits... the stock GXP bar looks straight from bushing to bushing so it hits in the bushings at 90 degrees... but this 34mm bar is all bent and curved I don't see how it will sit in the bushing at 90 degrees its going to be at an angle and likely put way to much stress on the bushing...
Who here actually has a GXP that has the 34mm front sway bar? How does it fit?????
Who here actually has a GXP that has the 34mm front sway bar? How does it fit?????
10-22-2016, 11:29 AM
#17
Both Spawne and myself have the bar as well as probably many others, it fits trust me. The rear of the cradle gets dropped a few inches and it goes right in. You saw the pic in my other post?
https://ls1tech.com/forums/ls4-perfo...on-brakes.html
https://ls1tech.com/forums/ls4-perfo...on-brakes.html
10-22-2016, 10:35 PM
#20
Launching!
Thread Starter
The zerk... is it greasing between the bushing and the clamp or did you drill the bushing too so it greases the bar and bushing(could one drill the bushing and install a brass tube to maintain the bushings rigidity and ensure grease passes to the bar?)