Suspension Guru’s input on this list, please... - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

speedypeat · 06-27-2019, 04:19 PM

So, originally I had communicated with JPSS concerning a package that included their Sway Bar, Control Arms, Drop Links, Caster Locks, Z28 Toe Links, their billet Radius Arm Inserts, B6 monotubes and DSE springs. I ended up having to go overseas for work a bit suddenly, and once I returned home I discovered JPSS was no more. I’ve researched this forum quite a bit to try to get the appropriate GM part numbers and add to their recommendations from other sources.. I have already ordered and received the B6s and the DSE springs, along with Pegasus Cradle Bushings. While not a 32mm adjustable Sway Bar, I thought the ZL1 piece might be better with my stock SS front bar... Are the Z28 Radius Arms superior to inserts currently? Thoughts on the Z28 RUCA bushings vs the JDP Motorsport bushings sold already in the brackets? Car is a 2010 Camaro SS, square setup, 20x10 wheels (275/40-20)...

Here’s “The List”... Any and all thoughts/criticism are/is valued...

DSE adjustable caster kit

ZL1 Rear Sway Bar w/Rear Lower Control Arms & End Links

Link Rod x 2
Product ID: 22845487

Bushing (RUCA)
Product ID: 23104906

Bushing (RUCA)
Product ID: 23104907

Trailing Arm x 2
Product ID: 23104900

Lower Control Arm
Product ID: 23105018

Lower Control Arm
Product ID: 23105019

KillboyPowerhead · 06-27-2019, 06:24 PM

DSE has a rear sway bar that's similar in stiffness to JPSS's bar. (FYI, JPSS's bar isn't adjustable, but it is designed to mount directly over top of the lower mounting point. Also, if you lower the car, consider cutting the drop link so that the drop links will again be inline, perpendicular to the ground, instead of leaning forward).

The Z28 upper control arms bushings come in brackets as well (if you didn't know); I believe GM said that they're 400% stiffer than other versions so I imagine this bushing would be similar or better than aftermarket ones (or at the very least, good enough, depending on your application and experience).

Not sure off hand if anyone else makes radius rod inserts; I know Pegasus was developing solid aluminum bushings but not sure of the status of those. Again, considering the Z28 is a "track ready" car I'd imagine the Z28 inserts would be good enough.

The Z28 also offers different/stiffer rear shock mounts which I opted for, although I don't know if I notice a huge difference... Not that I'm a professional driver by any means.

If you're going this far, maybe consider caster plates (like from Pegasus) to give more caster for better wheel-centering; or if you're drilling out the front subframe (I assume you are if you got the radius rod washer kit by DSE) then the caster plates can be turned inward to bring the struts inward, thus increasing straight-line stability, while being able to reduce excessive camber via the knuckle (also don't need too much front camber with the extra caster).

Depending on how much camber you want, at ~1.5" drop in the rear you may require "camber bolts" (or drill out the subframe like for the front radius rods) to get less than -1.0° camber or so.

Hope this helps.

SS 310H55A · 06-27-2019, 11:47 PM

Since JPSS shut down, you won’t be able to get billet radius rod inserts. Next best thing will be the z/28 radius rods. I managed to score a brand new set of the billet inserts from someone on here. I’ve been tempted to PM JPSS to see if I could get his permission to have a local shop duplicate them, but I don’t know it’s worth the effort even if he were to agree.

hammdo · 06-28-2019, 12:07 AM

Or, you could go 6th gen like I did:

https://www.camaro5.com/forums/showt...85577&page=174
https://www.camaro5.com/forums/showt...85577&page=175

I’ve done just about every suspension mod out there over the years and tested them on the track ;o)

-Don

speedypeat · 06-28-2019, 01:11 AM

First time I saw the 6 Gen parts use! Brilliant stuff!

speedypeat · 06-28-2019, 01:15 AM

Quote:

Originally Posted by KillboyPowerhead

DSE has a rear sway bar that's similar in stiffness to JPSS's bar. (FYI, JPSS's bar isn't adjustable, but it is designed to mount directly over top of the lower mounting point. Also, if you lower the car, consider cutting the drop link so that the drop links will again be inline, perpendicular to the ground, instead of leaning forward).

The Z28 upper control arms bushings come in brackets as well (if you didn't know); I believe GM said that they're 400% stiffer than other versions so I imagine this bushing would be similar or better than aftermarket ones (or at the very least, good enough, depending on your application and experience).

Not sure off hand if anyone else makes radius rod inserts; I know Pegasus was developing solid aluminum bushings but not sure of the status of those. Again, considering the Z28 is a "track ready" car I'd imagine the Z28 inserts would be good enough.

The Z28 also offers different/stiffer rear shock mounts which I opted for, although I don't know if I notice a huge difference... Not that I'm a professional driver by any means.

If you're going this far, maybe consider caster plates (like from Pegasus) to give more caster for better wheel-centering; or if you're drilling out the front subframe (I assume you are if you got the radius rod washer kit by DSE) then the caster plates can be turned inward to bring the struts inward, thus increasing straight-line stability, while being able to reduce excessive camber via the knuckle (also don't need too much front camber with the extra caster).

Depending on how much camber you want, at ~1.5" drop in the rear you may require "camber bolts" (or drill out the subframe like for the front radius rods) to get less than -1.0° camber or so.

Hope this helps.

Brilliant, thanks so much!

speedypeat · 06-28-2019, 01:18 AM

Quote:

Originally Posted by SS 310H55A

Since JPSS shut down, you won’t be able to get billet radius rod inserts. Next best thing will be the z/28 radius rods. I managed to score a brand new set of the billet inserts from someone on here. I’ve been tempted to PM JPSS to see if I could get his permission to have a local shop duplicate them, but I don’t know it’s worth the effort even if he were to agree.

Is Justice Pete still active on the forum??

SS 310H55A · 06-28-2019, 08:41 AM

Quote:

Originally Posted by speedypeat

Is Justice Pete still active on the forum??

No but if you PM him I’m sure he’ll still get the email notification. I figure 50/50 chance he’ll actually respond.

DrkPhx · 06-28-2019, 08:29 PM

The Pegasus solid cradle bushings and rear Z/28 upper control arm bushings are maybe the best suspension mod combo for this car. They really tighten up the slop in the rear end and the improvement is noticeable. I bought the Z/28 front radius arms and just removed the delrin inserts and installed them on the stock arms. They really tighten up the steering.

06-27-2019, 04:19 PM	#1
speedypeat Drives: 2010 SS Join Date: Jul 2016 Location: VA Posts: 6	Suspension Guru’s input on this list, please... So, originally I had communicated with JPSS concerning a package that included their Sway Bar, Control Arms, Drop Links, Caster Locks, Z28 Toe Links, their billet Radius Arm Inserts, B6 monotubes and DSE springs. I ended up having to go overseas for work a bit suddenly, and once I returned home I discovered JPSS was no more. I’ve researched this forum quite a bit to try to get the appropriate GM part numbers and add to their recommendations from other sources.. I have already ordered and received the B6s and the DSE springs, along with Pegasus Cradle Bushings. While not a 32mm adjustable Sway Bar, I thought the ZL1 piece might be better with my stock SS front bar... Are the Z28 Radius Arms superior to inserts currently? Thoughts on the Z28 RUCA bushings vs the JDP Motorsport bushings sold already in the brackets? Car is a 2010 Camaro SS, square setup, 20x10 wheels (275/40-20)... Here’s “The List”... Any and all thoughts/criticism are/is valued... DSE adjustable caster kit ZL1 Rear Sway Bar w/Rear Lower Control Arms & End Links Link Rod x 2 Product ID: 22845487 Bushing (RUCA) Product ID: 23104906 Bushing (RUCA) Product ID: 23104907 Trailing Arm x 2 Product ID: 23104900 Lower Control Arm Product ID: 23105018 Lower Control Arm Product ID: 23105019

06-27-2019, 06:24 PM	#2
KillboyPowerhead Drives: 2015 Z/22 Join Date: Aug 2015 Location: Ontario, Canada Posts: 944	DSE has a rear sway bar that's similar in stiffness to JPSS's bar. (FYI, JPSS's bar isn't adjustable, but it is designed to mount directly over top of the lower mounting point. Also, if you lower the car, consider cutting the drop link so that the drop links will again be inline, perpendicular to the ground, instead of leaning forward). The Z28 upper control arms bushings come in brackets as well (if you didn't know); I believe GM said that they're 400% stiffer than other versions so I imagine this bushing would be similar or better than aftermarket ones (or at the very least, good enough, depending on your application and experience). Not sure off hand if anyone else makes radius rod inserts; I know Pegasus was developing solid aluminum bushings but not sure of the status of those. Again, considering the Z28 is a "track ready" car I'd imagine the Z28 inserts would be good enough. The Z28 also offers different/stiffer rear shock mounts which I opted for, although I don't know if I notice a huge difference... Not that I'm a professional driver by any means. If you're going this far, maybe consider caster plates (like from Pegasus) to give more caster for better wheel-centering; or if you're drilling out the front subframe (I assume you are if you got the radius rod washer kit by DSE) then the caster plates can be turned inward to bring the struts inward, thus increasing straight-line stability, while being able to reduce excessive camber via the knuckle (also don't need too much front camber with the extra caster). Depending on how much camber you want, at ~1.5" drop in the rear you may require "camber bolts" (or drill out the subframe like for the front radius rods) to get less than -1.0° camber or so. Hope this helps. __________________ Overkill/Self Tuned; Mace Camshafts; K&N Typhoon Cold Air Intake; Ported 80mm Throttle Body/Intake Manifolds/Manifold Spacer; Solo Performance High-Flow Cats, Cat-back Exhaust; Vitesse Motorsports Throttle Controller; Elite Engineering E2 Catch Can; BC Racing BR Coilovers; JPSS Delrin Radius Rod Bushing Inserts, Sway Bars; Pegasus Aluminum Rear Cradle Bushings, Camber/Caster Plates; Z/28 Toe Links, Trailing Arms, Upper Control Arm Bushings, Rear Shock Mounts

06-27-2019, 11:47 PM	#3
SS 310H55A Drives: 2014 Camaro SS Join Date: Jan 2019 Location: Southern California Posts: 253	Since JPSS shut down, you won’t be able to get billet radius rod inserts. Next best thing will be the z/28 radius rods. I managed to score a brand new set of the billet inserts from someone on here. I’ve been tempted to PM JPSS to see if I could get his permission to have a local shop duplicate them, but I don’t know it’s worth the effort even if he were to agree. __________________ 2014 SS \| MGW Flat Stick shifter \| Raceseng Slammer shift knob \| Z/28 spoiler and grill

06-28-2019, 12:07 AM	#4
hammdo 'It's an experiment' Drives: [COTW 2/09/15] '11 GPI LSA SC Z/LE Join Date: May 2014 Location: Dallas TX Posts: 8,699 View My Garage	Or, you could go 6th gen like I did: https://www.camaro5.com/forums/showt...85577&page=174 https://www.camaro5.com/forums/showt...85577&page=175 I’ve done just about every suspension mod out there over the years and tested them on the track ;o) -Don __________________ 747 RWHP 794 RWTQ "Horsepower sells cars, torque wins races." - Enzo Ferrari See My Build: http://www.camaro5.com/forums/showthread.php?t=385577

06-28-2019, 01:11 AM	#5
speedypeat Drives: 2010 SS Join Date: Jul 2016 Location: VA Posts: 6	First time I saw the 6 Gen parts use! Brilliant stuff!

06-28-2019, 08:29 PM	#9
DrkPhx Drives: 2013 Triple Black ZL1 / 2006 TB SS Join Date: Feb 2011 Location: MN Posts: 2,250	The Pegasus solid cradle bushings and rear Z/28 upper control arm bushings are maybe the best suspension mod combo for this car. They really tighten up the slop in the rear end and the improvement is noticeable. I bought the Z/28 front radius arms and just removed the delrin inserts and installed them on the stock arms. They really tighten up the steering.