Alignment Specs

Discussion in 'Suspension, Steering, Brake & Wheel Topics' started by 1981zapper, Aug 28, 2019.

  1. 1981zapper

    1981zapper Veteran Member

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    Just rebuilt my front suspension on my '81 Z,

    -Hotchkis Coil Springs 2 in. Drop part #1908F
    -Hotchkis Tuned 1.5 Street Performance Series Front Shocks (made by Fox)
    - Moog control arm bushings (uppers & lowers)
    - Moog Upper & lower ball joints
    - Moog offset Control Arm Shaft # K6148 (increase negative chamber)
    - Hellwig Motorsports 1-5/16" Sway bar
    - All new Moog Inner, outer tie rods, idler arm, center link

    I'm going to be running 225/45/17 on a 17x8 with 4.5 Backspacing, my concern is my tires rubbing on the outer inner fenders, I recall reading on here to give additional negative chamber for clearance,

    with my suspension set up, what alignment specs should this suspension be set to??

    thanks
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  2. Rene Melten

    Rene Melten Veteran Member Lifetime Gold Member

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    Take it from the "King" David Pozzi, tall ball joints help.

     
  3. COPO

    COPO Veteran Member Lifetime Gold Member

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    Take it to Stevenson’s Steering in Oshawa, Taunton Rd and Sommerville. They’ve been around since the 50’s.
     
  4. BonzoHansen

    BonzoHansen Administrator Lifetime Gold Member

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    225/45/17 is a small tire.

    Run as much caster as can be added, -.75° camber, zero toe.
     
  5. Jeep43

    Jeep43 Veteran Member

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    Yeah, maybe a typo. The tall ball joint will improve the tire to inner fender rub issue as you will get more camber gain with the same amount of compression.
     
  6. G72Zed

    G72Zed Veteran Member

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    A 17x8 with 5" BS instead of 4.5"would help, it would also allow you to run a slightly wider tire like a 245/45/17.

    As BonzoHanson states, use as much caster as possible, and the tall UBJ does help on - camber gain on bump.

    But I have wear issues with Zero toe, good for autocross/road course, but with allot of highway miles, I had issues with the insides, now use 1/16th total toe.
     
  7. BonzoHansen

    BonzoHansen Administrator Lifetime Gold Member

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    I would not argue with that toe set
     
  8. 1981zapper

    1981zapper Veteran Member

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    I already installed new Moog upper ball joints, I wish I went with a taller upper ball joint, I'm running the off-set cross shaft to give me some additional negative camber

    I did a lot of reading lately guys are running a range of specs;

    what do you guys think of these specs

    - Caster : as much as I can get with factory arms (probably positive 2.5 - 3.0 degrees)
    - Camber: negative 1 - 1.5 degree
    - Toe: positive 1/16 which works out to be +0.07 per tire with a 25" tall tire
     
    Last edited: Sep 1, 2019
  9. 1981zapper

    1981zapper Veteran Member

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    I ran a small tire on purpose, I'm afraid of tire rubbing with my backspacing
     
  10. G72Zed

    G72Zed Veteran Member

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    I like it, nice setup. Keep an eye on the inside tire with 1.5 -camber.

    If you ever want to improve on this, and go to the next level of handling, look at the adjustable upper A-arms like SPC. You can dial in a crap load of +caster, and go back a tad on the negative camber settings as you will gain dynamic camber on turn in with high +caster settings among other benefits.
     

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