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Discussion Starter · #1 ·
Does anyone know if the OE Struts are different and springs etc.?

The reason I ask, could I just purchase lowering springs for a G8 and install on my SS? I know the VF chassis is updated, however did they go down to the coils to and change it? If so, is it so much that a set of lowered coils would not work?
 

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The struts are different, the width of the clevice differs between VE & VF.
Also the VF springs may in theory be different because of lighter aluminium alloy now used in the knuckle and lower control arms.
A full set of VE/G8 front lower control arms weighs 29 pounds in steel.
 

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As stated, springs are "not the same" between VE & VF, but it isn't conclusive that the springs will not interchange, only that different PN's were assigned/installed in production, based on the model specs, weight vs ride height targets, etc. As far as fit/form/function, at least one aftermarket supplier - Pedders - has indicated by their catalog listings that the springs they offer will fit both VE & VF. Note the springs highlighted in RED.

If that is the case, by extrapolation it can be assumed to indicate that any brand of lowering spring made for a G8 is going to fit the SS--but that is not to say that the amount of drop or the actual spring rates will be suitable or the same for both series chassis due to the lower weight of VF vs VE as well as the changes in weight distribution between the 2 variants, which is a relatively minor difference when you're tossing the OE springs and installing something from the aftermarket.

To be clear, this is NOT a "plug" for Pedders - just a point of reference that seems to indicate that springs offered for VE/G8 from at least one source are compatible for fitment on VF/SS.


Holden Commodore 2013-on VF Sedan 2013-on

Sedan 2013-on | Pedders Suspension <click to view

Coil Over Kits [Full Car]
160094 Extreme XA Coilover Kit

Front Spring Low

2954 Pedders Sportsryder Coil Spring
202954 Pedders Coil Spring
220092 Pedders Sportsryder Coil Spring

Rear Spring Low

2955 Pedders Sportsryder Coil Spring
202955 Pedders Coil Spring
212955 Pedders Sportsryder Coil Spring


Holden Commodore 2006-2013 VE Sedan, 2006-On

Catalogue | Pedders Suspension <click to view

Coil Over Kits [Full Car]
164064 Remote Cannister Adj. Coilover
160064 Pedders Extreme XA Coilover Kit

Front Spring Low
2954 Pedders Sportsryder Coil Spring
202954 Pedders Coil Spring
2956 Pedders Sportsryder Coil Spring

Front Spring Standard

7954 Pedders Heavy Duty Coil Spring

Front Spring Raised

7854 Pedders Heavy Duty Coil Spring

Rear Spring Low

2955 Pedders Sportsryder Coil Spring
202955 Pedders Coil Spring
2957 Pedders Sportsryder Coil Spring
212955 Pedders Sportsryder Coil Spring

Rear Spring Standard

7955 Pedders Heavy Duty Coil Spring

Rear Spring Raised
7855 Pedders Heavy Duty Coil Spring
 

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One must keep in mind Pedders USA is no longer in business.
 

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Discussion Starter · #8 ·
I was wondering this as I may just buy the Eibach Pro-Kit and lower my SS. It will not be as aggressive as Coil overs, on the other hand the roads in Michigan suck bad and I already have a Bagged car as it is. No need to scrape the ground. Just close the wheel gap a touch.

The weight difference between the GXP and SS is less than 100lbs or so.

Thanks for the info Navy Lifer!
 

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even if they did exchange the spring rates would almost undoubtedly be wrong. the weight balance on the SS is not the same as the G8. hang tight i just sent my stock coils back to H&R last week so they can check to see if they already have something or will make new ones.
 

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One must keep in mind Pedders USA is no longer in business.
As acknowledged--the web info provided is from the Australian website, and was only for reference, to illustrate that the Pedders springs (off-topic, really) appear to be interchangeable between VE & VF...I'm not shillin' for Pedders. I don't know if any of the other spring suppliers (Tein, H&R, Eibach, Lovells, etc)....have anything listed for the VF chassis or SS specifically or if any of their VE springs also are listed as suitable for VF, as Pedders has done.

MM - your statement about spring rates & weight distribution is a bit misleading, at best, as the weight (total & F/R %) is not THAT radically changed, when you consider how widely driver & passenger weight varies, and what someone may put in the trunk....and if H&R or any other spring supplier really cared about offering a product for a new "sporting" vehicle like the SS, they wouldn't wait for some take-off springs or the urging of an interested party/owner inquiry, they would get them from GM and test them and see whether they had the product already on the shelf or get the process started to put a "correct" spring in production. At worst, well, I'm just not buying what has been stated....and I'll leave it at that.

Unfortunately, the reality of this car is that suppliers of anything specific to the vehicle have to decide whether it's worth it to even produce something when production is likely to be so low that the business case is very difficult to justify. When one supplier (H&R) looks at what percentage of the spring market they may realize out of the process, it will be interesting to see whether they do anything more than just qualify their existing G8 spring kit.
 

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As acknowledged--the web info provided is from the Australian website, and was only for reference, to illustrate that the Pedders springs (off-topic, really) appear to be interchangeable between VE & VF...I'm not shillin' for Pedders. I don't know if any of the other spring suppliers (Tein, H&R, Eibach, Lovells, etc)....have anything listed for the VF chassis or SS specifically or if any of their VE springs also are listed as suitable for VF, as Pedders has done.

MM - your statement about spring rates & weight distribution is a bit misleading, at best, as the weight (total & F/R %) is not THAT radically changed, when you consider how widely driver & passenger weight varies, and what someone may put in the trunk....and if H&R or any other spring supplier really cared about offering a product for a new "sporting" vehicle like the SS, they wouldn't wait for some take-off springs or the urging of an interested party/owner inquiry, they would get them from GM and test them and see whether they had the product already on the shelf or get the process started to put a "correct" spring in production. At worst, well, I'm just not buying what has been stated....and I'll leave it at that.

Unfortunately, the reality of this car is that suppliers of anything specific to the vehicle have to decide whether it's worth it to even produce something when production is likely to be so low that the business case is very difficult to justify. When one supplier (H&R) looks at what percentage of the spring market they may realize out of the process, it will be interesting to see whether they do anything more than just qualify their existing G8 spring kit.
i wasn't auguring with you... :X however it is not misleading. your misleading people by using an aftermarket manufacture to judge they are the same. not to mention you are a cutting and pasting off the internet, just to show that someone listed them with the same part number. not to mention have even looked at the the springs or struts off the car?

as far as i am concerned if you don't want to buy H&R so be it no sweat off my back. buy a rebranded over priced pedders product as far as i am concerned.

also i as crazy paul said

The struts are different, the width of the clevice differs between VE & VF.
Also the VF springs may in theory be different because of lighter aluminium alloy now used in the knuckle and lower control arms.
A full set of VE/G8 front lower control arms weighs 29 pounds in steel.
i'll leave my statement at that. lets move along. PLEASE :mellow:
 

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i wasn't auguring with you... :X however it is not misleading. your misleading people by using an aftermarket manufacture to judge they are the same. not to mention you are a cutting and pasting off the internet, just to show that someone listed them with the same part number. not to mention have even looked at the the springs or struts off the car?

as far as i am concerned if you don't want to buy H&R so be it no sweat off my back. buy a rebranded over priced pedders product as far as i am concerned.

So which one of you fellas has something figured out to lower my SS? hmmmm????
I haven't misled anyone. The Pedders Australia listing (from their own Oz website) was simply to provide a point of reference--if any supplier SHOULD know, it would be an Australian brand, as to what products they offer may be common between VE & VF chassis. It was not an effort to steer anyone toward using a specific brand of lowering spring...Pedders does not appear to be favored, for various reasons, but I have no reason to pile on--I don't take cheap shots if they aren't deserved. If there is another brand that substantiates or refutes their spring info regarding VE<>VF spring compatibility, by all means, post it up.

I made reference to H&R, which offers a G8 (VE) spring kit, to suggest that in ANY effort to determine what is needed to lower the VF chassis, a supplier would logically start their process by acquiring the production springs from the OE and evaluating them against their current fitment of a similar platform (G8 in this case), as it MAY be that, just as Pedders Australia has indicated by their listings, that the same springs offered for VE (and WM - Caprice) are suitable for VF. That they (H&R) are willing to take the springs from (your) SS is good, though I maintain that IF they were truly interested in a fitment for this chassis, the work would have already been done.

I ran into this when researching lowering springs for the 2011 Caprice PPV (WM platform), which is simply a stretched VE chassis--with another 150 - 200# or so of total vehicle weight. H&R was not able or willing to offer any assistance, but I've since learned that their G8 springs do work for the PPV, even though it is not listed as an application for their spring kit.

To suggest that the VE springs from various sources cannot be correct due to difference in vehicle weight is the misleading part of this--for production springs from the OEM, yes, they are quite specific due to the ride/trim height targets set for each production variant...but not so much in the aftermarket for lowering springs (if Pedders info is correct in regard to their own products).

And to be clear, I have no preference, and definitely no issues with H&R, otherwise--my intent is only to indicate that the aftermarket spring market, generally, is not responding as fast on this vehicle as potential customers seem to want - as LiquidR3D's inquiry suggests. I won't say "just use H&R G8 springs", but I am inclined to believe they WILL work--ie. they will FIT, but it's not a lock that the change in ride height will be the same as claimed for G8, for various reasons--especially if there's a difference in strut/shock spring collar placement, when comparing VE & VF components--although the Pedders information on their springs would suggest this is not the case.

I may ultimately consider using some OE SS springs to lower my own car (PPV) which was built with a higher baseline ride height.

We're all learning, hopefully.
 

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Discussion Starter · #16 ·
Thanks for your input. If anything based on this I can buy some Eibach or Tein or H&R etc coils. "If" they work out and ride great and look good then we have a winner. "IF" they do not match up or lower like I want, I simply sell them to a G8 owner. Of which I personally know several. The labor can all be done by myself and then just an alignment.

Worth a shot in my opinion.

Thanks Bill.
 

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Auto part Firearm Gun

The front struts are very similar. Like Paul stated the difference is where the knuckle bolts on.
GXP on the bottom and SS on the top.

The rears are more different. I'll have a picture soon.

-Greg
 

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GXP on top and SS on the bottom
Shock absorber Suspension part Auto part

Rears
The SS shock has a larger tube and the spring mount is flat all the way around.
the GXP shock the spring mount is angled.

The SS shock looks very similar to the Camaro rear shock.
-Greg
 

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GXP on top and SS on the bottom
View attachment 7457
Rears
The SS shock has a larger tube and the spring mount is flat all the way around.
the GXP shock the spring mount is angled.

The SS shock looks very similar to the Camaro rear shock.
-Greg
IIRC when reading a review on GMI by Mark (no not me :) ) Cadle he mentioned the Camaro in relation to suspension changes
 
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