GT350 Front Camber Adjustment

Discussion in 'How To Forum' started by Black Boss, Jan 24, 2016.

  1. Black Boss

    Black Boss TMO Addict

    Messages:
    1,363
    Likes Received:
    464
    Joined:
    Sep 29, 2012
    Location:
    Michigan
    I had bought a set of MM camber plates that I was planning to install. However it turns out that there's an alternative. Ford sells service bolts that are smooth and a slightly smaller diameter than the splined OE bolts:

    [​IMG]

    I used a micrometer to measure them today -- the service bolt is 0.4mm smaller.

    Here are the part numbers. Bolt: W715295-S439 Nut: W520216-S441

    @cloud9

    The service nut is Nylock, unlike the OE nut

    I plan to install once I've finished the 1,000 mile Break-in -- 185 miles to go!
     
    DocWalt likes this.
  2. VoodooBoss

    VoodooBoss Rick Moderator

    Messages:
    18,226
    Likes Received:
    1,048
    Joined:
    Nov 30, 2010
    Location:
    90 Miles East of Sonoma Raceway
  3. cloud9

    cloud9 Gary

    Messages:
    6,581
    Likes Received:
    5
    Joined:
    Nov 29, 2010
    Location:
    Sioux Falls, SD
    Re: Front Camber Adjustment

    Excellent. I'd much rather go this route and leave the factory suspension as original as possible. Anxious to see your results but I'm assuming we can get the recommended camber? What are you planning to do with the MM plates as I have a set NIB as well.
     
  4. Black Boss

    Black Boss TMO Addict

    Messages:
    1,363
    Likes Received:
    464
    Joined:
    Sep 29, 2012
    Location:
    Michigan
    Re: Front Camber Adjustment

    I think you need to unclip the speed sensor wiring harness to get access. Also I talked to one of the Ford Performance Techs who was very helpful -- he said to be careful not to hit the caliper brake pipe with the wrench. Once the old bolts are out I plan to lightly torque the new ones and adjust camber and then torque to spec. Final torque spec is 184 lbft. As with the Boss I will re-check Toe after and Camber changes.
     
  5. ArizonaBOSS

    ArizonaBOSS Because racecar. Moderator

    Messages:
    7,421
    Likes Received:
    746
    Joined:
    Dec 6, 2010
    Location:
    Arizona, USA
    Re: Front Camber Adjustment

    184 ft-lbs, wow.
     
  6. cloud9

    cloud9 Gary

    Messages:
    6,581
    Likes Received:
    5
    Joined:
    Nov 29, 2010
    Location:
    Sioux Falls, SD
    Re: Front Camber Adjustment

    Going to have to do this one on a lift so you can do chin ups on the torque wrench.
     
  7. moto

    moto Ron

    Messages:
    240
    Likes Received:
    13
    Joined:
    May 6, 2012
    Location:
    Las Vegas, NV
    Re: Front Camber Adjustment

    The knuckle is still center though(not offset) and so you would just have to position it while tightening? How far apart are the 2 bolts as that will tell how much angle that will change?
     
  8. mattlqx

    mattlqx Mustangless

    Messages:
    437
    Likes Received:
    190
    Joined:
    Nov 27, 2015
    Location:
    Chandler, AZ
    Re: Front Camber Adjustment

    Excuse my noobishness... but where exactly does this bolt go? I'm understanding that because it's smooth and slightly smaller it will allow for more travel on whatever it's bolting down for more possible camber? Are the track alignment suggestions they give on the owners manual insert possible without this new bolt? Do you just want still greater changer in camber?
     
  9. Black Boss

    Black Boss TMO Addict

    Messages:
    1,363
    Likes Received:
    464
    Joined:
    Sep 29, 2012
    Location:
    Michigan
    Re: Front Camber Adjustment

    There are 2 bolts (each side) that secure the bottom end of the strut to the knuckle. The OE bolts have no clearance and therefore camber cannot be adjusted. These bolts allow for a small range of adjustment -- hopefully enough to achieve the recommendations of 1.75* for the R and 1.5* for the 350.

    Mine has 1.2* with the OE bolts, so I only need 0.55*
     
  10. ArizonaBOSS

    ArizonaBOSS Because racecar. Moderator

    Messages:
    7,421
    Likes Received:
    746
    Joined:
    Dec 6, 2010
    Location:
    Arizona, USA
    Re: Front Camber Adjustment

    @Black Boss does it look like there is enough room in the strut flange to simply elongate the upper hole laterally to allow for more adjustment range?
     
  11. cloud9

    cloud9 Gary

    Messages:
    6,581
    Likes Received:
    5
    Joined:
    Nov 29, 2010
    Location:
    Sioux Falls, SD
    Re: Front Camber Adjustment

    Ron said Ford hogged the holes on the Track Tour cars when he was at LS. I assumed they hogged the lower hole though. I did that on my Boss to get -2.8* vs. -2.4* with the MM cc plates.

    @Moto
     
  12. moto

    moto Ron

    Messages:
    240
    Likes Received:
    13
    Joined:
    May 6, 2012
    Location:
    Las Vegas, NV
    Re: Front Camber Adjustment

    I remember we did the math assuming the bolts were 4" apart(that's what the boss/S197 is) and you would need about .035" of grinding the strut holes(total for one hole or half for both) to get the .5*. If you can get .016(.4mm) per bolt then you should be really close to .5* unless the bolts are more than 4" apart.
     
  13. mattlqx

    mattlqx Mustangless

    Messages:
    437
    Likes Received:
    190
    Joined:
    Nov 27, 2015
    Location:
    Chandler, AZ
    Re: Front Camber Adjustment

    Is this typical? I thought camber was usually achieved by just adjusting the upper mount. But I guess without the range that aftermarket C&C plates allow this is required it sounds. Is there no adjustment possible on the upper mounts?
     
  14. cloud9

    cloud9 Gary

    Messages:
    6,581
    Likes Received:
    5
    Joined:
    Nov 29, 2010
    Location:
    Sioux Falls, SD
    Re: Front Camber Adjustment

    Most of us used CC plates on the upper mount for the Boss. Most popular were Maximum Motorsports and Vorshlag. The problem was you were typically limited to about -2.3 to -2.4* and with Hoosiers or slicks you needed more like -2.7 to -3.0*. The only way to get the additional camber was to hog the strut to spindle holes.

    The design of the GT350 front suspension doesn't require as much negative camber as we needed on the S197 chassis. The idea of using the bolts is to "simplify" by leaving the strut in place and just replacing the 4 bolts on the lower end of the strut. This way you don't have to pull the entire strut out of the vehicle, disassemble it and reinstall with the CC plates (strut mount).

    There is no factory adjustment on the front strut mounts. There is enough adjustment in the rear to gain the recommended camber for track use.
     
  15. mattlqx

    mattlqx Mustangless

    Messages:
    437
    Likes Received:
    190
    Joined:
    Nov 27, 2015
    Location:
    Chandler, AZ
    Re: Front Camber Adjustment

    Excellent, thanks. I'll snag some of these bolts.
     
  16. modernbeat

    modernbeat TMO Advanced

    Messages:
    130
    Likes Received:
    26
    Joined:
    Jul 2, 2012
    Location:
    Dallas, TX
    Re: Front Camber Adjustment

    Well, there are three ways to get camber up front. The first is, of course, a camber plate. It's usually limited by the opening in the top of the strut tower. The next is strut-spindle interface. Either camber bolts or lengthening the upper bolt hole. But gaining negative camber here reduces inboard tire room, which is direly needed. The last method is to lengthen the lower arm, which requires an aftermarket arm and tie rod and introduces all sorts of failure points.

    But, we can also address the main limitation of the camber plates. We can open up the top of the strut tower to allow more movement. Our camber plates were designed to go further than the tower opening allows. The Boss 302S came with towers slotted all the way through the reinforcement rib. We open it up in a more subtle way without making it look hacked up or obviously modified.

    Here are the stock Boss 302S strut openings.
    [​IMG]

    [​IMG]

    Here is the stock GT strut tower.
    [​IMG]

    Here is the opened up strut tower.
    [​IMG]

    Here is one that is mid-cut. The jig we use is in place and the tower is about halfway sawed through.
    [​IMG]
     
  17. ArizonaBOSS

    ArizonaBOSS Because racecar. Moderator

    Messages:
    7,421
    Likes Received:
    746
    Joined:
    Dec 6, 2010
    Location:
    Arizona, USA
    Re: Front Camber Adjustment

    That's pretty slick, Jason. I "302Sed" mine and while not as elegant, it is effective.
     
  18. Black Boss

    Black Boss TMO Addict

    Messages:
    1,363
    Likes Received:
    464
    Joined:
    Sep 29, 2012
    Location:
    Michigan
    Re: Front Camber Adjustment

    Yea I think there's enough meat on the flange -- just hate to butcher those struts!

    As pointed out, the advantage of camber plates is that they maintain strut/tire clearance and the 302S versions mounted with the top of the shock stud under the strut tower making elongating the tower hole optional -- the downside is I hate spring compressors -- not an issue with Boss coilovers ;)
     
  19. Black Boss

    Black Boss TMO Addict

    Messages:
    1,363
    Likes Received:
    464
    Joined:
    Sep 29, 2012
    Location:
    Michigan
    Re: Front Camber Adjustment

    Good news -- the 350 strut holes are closer together at 3", so in theory there should be over .6* of adjustment -- we'll see!
     
  20. Tob

    Tob TMO Advanced

    Messages:
    192
    Likes Received:
    49
    Joined:
    Nov 27, 2011
    Location:
    Upstate
    Re: Front Camber Adjustment

    GT350 Mag strut ear dimensions.


    Center to center dimension
    [​IMG]


    Ear hole diameter
    [​IMG]
     
    DocWalt likes this.

Share This Page