03-26-2014, 12:24 PM | #1 |
2013 Camaro SS1LECTSVZ28
Drives: 2013 AGM 1SS/1LE Join Date: Nov 2012
Location: Suburbs of Detroit, MI
Posts: 2,440
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PIF2: Adjustable Rear Camber Bolts
PIF: Pay it forward with useful info to help others and save a few dollars.
I see this one come up a lot in threads.....So for those looking for an adjustable rear camber bolt after lowering: SPC 87430 About $30 from our sponsors here. (You need two boxes as each contains 1 camber bolt and 1 caster bolt) Double the range of rear camber and toe adjustment on the popular Camaro to increase handling performance and minimize tire wear. Remove and replace the OE cam bolts with our 87430 kit for +/- 1.0 degree camber change and +/- 2.0 degrees toe change. No slotting or grinding needed! Rear Adjustment Range: Camber +/- 1.0 degree Toe +/- 2.0 degrees Installation time: .6 hr/side Required: 1 per wheel Pedders makes one too......but you would have to search to see who has inventory left at this time. -Matt Last edited by Dropspeed; 04-14-2014 at 06:38 AM. |
12-01-2014, 04:54 AM | #2 |
Drives: '16 C7 Z51 Join Date: May 2012
Location: Redmond, WA
Posts: 3,056
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Ordered two of these at $27 shipped on Amazon per kit. When I installed Z/28 suspension kit, I was surprised to see that I could not get more than -1 camber at the rears, which will not be enough for Trofeo Rs :(. Considering Z/28 shocks lower the car by 33mm as well, I was actually expecting the other way around.
Here's hoping this is enough. If not, I'll have to go the route of adjustable rear arms, which add quite a bit of weight where you wouldn't want.
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12-01-2014, 06:43 PM | #3 |
Drives: 14 1SS Camaro 1LE, NPP, Recaros Join Date: Nov 2013
Location: NC
Posts: 819
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Any idea how much camber you pick up after lower the car an 1"? I was barely able to get 1 degree in mine at OEM height, not enough but will be dropping car 1" and wonder if I should order adjustable control arms as well. Thx
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12-01-2014, 07:44 PM | #4 |
Drives: '16 C7 Z51 Join Date: May 2012
Location: Redmond, WA
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Mine did stay at -1 max after Z/28 suspension. Perhaps GM somehow compensates for the height drop in suspension design, so you don't get high negative camber. All good, except I wanted high negative camber
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12-02-2014, 03:49 PM | #5 | |
corner barstool sitter
Drives: 08 Mustang GT, 19 WRX Join Date: Jul 2012
Location: Eastern Time Zone
Posts: 6,990
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Quote:
Crudely, the closer the LCA and UCA are to being the same length, the smaller the camber changes will be for any given amount of suspension travel or lowering. But sometimes, what you want is a little more camber gain. Norm |
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12-02-2014, 04:56 PM | #6 |
Drives: G5.R Join Date: Sep 2010
Location: SoCal
Posts: 2,377
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X25, did you measure a drop when you installed the z/28 parts? I thought the lower ride height of the z/28 was because of its 26.2" OD tires vs the SS's 28.7"
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12-02-2014, 06:50 PM | #7 |
Drives: '16 C7 Z51 Join Date: May 2012
Location: Redmond, WA
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GM lists Z/28 as 33mm lower, which is about 1.3"? The tire diameter difference only explains 0.8" of it.
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12-06-2014, 03:53 AM | #8 | |
Drives: '16 C7 Z51 Join Date: May 2012
Location: Redmond, WA
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Quote:
Now that I have the Trofeo R tires as well, it is crucial that I hit my camber targets. I'm thinking about -1.5R / -2.5F. As is, I cannot go more than -1 rear, so did not go more than -1.8F not to upset the balance : (
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'16 Corvette C7 Z51 1LT (Build Thread)
'14 AGM 1SS 1LE [COTW 11/17/14] (Build Thread) (SOLD) '13 Mazda MX-5 Club (Build Thread) '17 RAM 1500 Crew Cab 4x4 Night Edition '15 Nissan Rogue S AWD |
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12-06-2014, 07:37 AM | #9 | ||
corner barstool sitter
Drives: 08 Mustang GT, 19 WRX Join Date: Jul 2012
Location: Eastern Time Zone
Posts: 6,990
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Quote:
Unless the hub carriers are different, with the control arm pivot points on it relocated, the rate of camber change can't vary from what it was before by very much. The ratio of the arm lengths and their inclinations would change only minutely if the link lengths are the only changes. Quote:
FWIW: Most SLA and multilink independent suspensions gain negative camber as they move in the 'bump' direction. But it is possible to arrange the links such that the camber gain in the bump direction goes positive (aka "the wrong way") instead, while the geo roll center goes underground. In 1969, Buick's "accu-drive" was one example. Norm |
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12-06-2014, 01:21 PM | #10 | |
Drives: '16 C7 Z51 Join Date: May 2012
Location: Redmond, WA
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Quote:
http://www.camaro5.com/forums/showth...90#post8057990 1" drop usually adds at least -0.5 camber based on others' experience. Not in my experience.
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12-06-2014, 02:25 PM | #11 |
Drives: '16 C7 Z51 Join Date: May 2012
Location: Redmond, WA
Posts: 3,056
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I went ahead and checked it out. Watch this video:
I hope the numbers are adding up better now
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12-06-2014, 09:02 PM | #12 | |
Drives: '16 C7 Z51 Join Date: May 2012
Location: Redmond, WA
Posts: 3,056
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Quote:
Measuring from the hub is definitely harder (depending on wheel surface), but is consistent regardless of wheel and tire choice, which is why that's the only way I see being used, at least in other cars' enthusiast sites (S2000, BRZ, Miata, EvoX, etc.). I did not take my time to get very accurate measurements after the Z/28 install, but the drop in height is obvious. Both fronts and rears come complete from the kit, with the hats already installed. Actually, the installation could not be easier. All I torqued was the top and bottom connections for the struts and shocks. The kit comes with the Z/28-spec suspension control arms, too. One thing I have in mind is that I installed all the components when the car was on the lift, with tires/hubs sagging inwards (with as positive camber as they can get). Since I tightened these suspension components without load, perhaps all the little tolerances it has in bolt holes, etc. might have favored positive camber. FYI, I don't think I'd have any clocking/binding issue since Z/28 control arms all have metal sleeves for the bolt holes, etc., which would prevent any such binding, unlike aftermarket bushings. I actually don't like aftermarket bushings anymore; the OEM designs look a lot more durable.
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'16 Corvette C7 Z51 1LT (Build Thread)
'14 AGM 1SS 1LE [COTW 11/17/14] (Build Thread) (SOLD) '13 Mazda MX-5 Club (Build Thread) '17 RAM 1500 Crew Cab 4x4 Night Edition '15 Nissan Rogue S AWD Last edited by X25; 12-06-2014 at 09:15 PM. |
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