Shelby Drop Control arm clearance questions

Discussion in 'Technical' started by David74maverick, Jul 2, 2009.

  1. David74maverick

    David74maverick Member

    Joined:
    Mar 11, 2005
    Messages:
    818
    Likes Received:
    1
    Trophy Points:
    127
    Location:
    Arizona
    Vehicle:
    '74 maverick, '87 Celica
    I've been searching this forum for the shelby drop which did come up with quight afew results but didn't find the answers I was looking for.
    By dropping the control arms will I have to modify the strut towers on either side of the control arms? hammer them, drill them, what?
    I also heard about some upper control arm bushing retrofit kit by MOOG that replaces the metal bushings with rubber which provides more clearance on either side of the control arm. What do you think about the moog kit? do they need to be pressed in? hammered in?

    thank you.
     
  2. jayman

    jayman Member

    Joined:
    Aug 14, 2002
    Messages:
    430
    Likes Received:
    2
    Trophy Points:
    92
    Location:
    San Diego, Ca
    Vehicle:
    69.5 Maverick/72 Grabber
    I have done both of these things.

    1. Shelby drop of 1". When I did this, I used a template for a 67 - 70 Mustang (available from most Mustang mail order shops.) This moved the holes down and slightly aft (back). I did not have to modify the shock towers and had plenty of clearance both front and back of the pivot shaft.

    2. Moog makes the rubber isolated replacement bushing kit similar to what is used on Chevy upper control arms. These are pressed into place, thereby stripping the threads out of the control arm. If you already have stripped pivot shaft threads, this is not a concern. The advantages of these are more clearance front and aft of the shaft, no need to lube them and they reduce shocks transmitted to the chassis from the road. I wouldn't use them for serious road racing, though.
     
  3. rthomas771

    rthomas771 Member

    Joined:
    Jan 22, 2008
    Messages:
    8,080
    Likes Received:
    969
    Trophy Points:
    498
    Garage:
    1
    Location:
    GA
    Vehicle:
    '74 Maverick 302 5-Speed.'60 Falcon V8. '63.5 Falcon HT
    Jay, what year Maverick did you do this mod on? I wanted to do this to my 74 but the inner brace inside the tower was in the way.

    [​IMG]
     
  4. David74maverick

    David74maverick Member

    Joined:
    Mar 11, 2005
    Messages:
    818
    Likes Received:
    1
    Trophy Points:
    127
    Location:
    Arizona
    Vehicle:
    '74 maverick, '87 Celica
    Did you still have access to the grease fittings? or do you think you would if you didn't do the moog kit? because when I changed my upper control arms afew years ago I couldn't even install zerk fittings, even the straight ones would of been touching the strut tower so I haven't been able to grease my upper control arms for about 5+ years. thanks.
     
  5. jayman

    jayman Member

    Joined:
    Aug 14, 2002
    Messages:
    430
    Likes Received:
    2
    Trophy Points:
    92
    Location:
    San Diego, Ca
    Vehicle:
    69.5 Maverick/72 Grabber
    I did the Shelby drop on a '72 that did not have the extra bracing that is shown in your picture. I was able to use the 90 degree zerks in that car. I did have to verify that the shaft was centered in the arm as mine had been mis-assembled with the shaft further to the back than it should have been. I found this when doing the initial alignment at home and noticed extreme differences in the adjustments left to right. Yet the frame measurements indicated that the car was straight.

    I used the Moog saver kit on a '72 without the drop. Lots of space front and rear with that kit. Quieted the front suspension down quite a lot also.
     
  6. David74maverick

    David74maverick Member

    Joined:
    Mar 11, 2005
    Messages:
    818
    Likes Received:
    1
    Trophy Points:
    127
    Location:
    Arizona
    Vehicle:
    '74 maverick, '87 Celica
    it would be nice if moog made a "space saver" kit with poly instead of rubber... durability...
     
  7. mr 2.3

    mr 2.3 New Member

    Joined:
    Nov 28, 2009
    Messages:
    2
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    bradenton fl
    Vehicle:
    1971
    hey I used a mustang 2 spindle on my 71 maverick and have some camber issues do they make a adjustable upper comtrol arm for this
     
  8. David74maverick

    David74maverick Member

    Joined:
    Mar 11, 2005
    Messages:
    818
    Likes Received:
    1
    Trophy Points:
    127
    Location:
    Arizona
    Vehicle:
    '74 maverick, '87 Celica
  9. mr 2.3

    mr 2.3 New Member

    Joined:
    Nov 28, 2009
    Messages:
    2
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    bradenton fl
    Vehicle:
    1971
  10. mercgt73

    mercgt73 Member Supporting Member

    Joined:
    Sep 6, 2003
    Messages:
    3,831
    Likes Received:
    359
    Trophy Points:
    223
    Location:
    Eastern Shore, Maryland
    Vehicle:
    1973 Comet GT (clone), 1974 Mustang II, 1980 Bobcat Wagon
    I thought that the 67-70 Shelby drop did not relocate the holes towards the rear of the vehicle. Only the 65-66 Mustangs moved rearward. The first link says moving the holes rearward is for an "Increased Caster Drop". Is that why you did it that way? :huh:

    http://home.bresnan.net/~dazed/drop
    http://members.cox.net/mbstang/template.jpg
     

Share This Page