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    1. #681
      Join Date
      Sep 2010
      Location
      Beach Park IL
      Posts
      2,651
      Country Flag: United States
      The first thing I did when I put similar spindles on my car was drill out the steering arms and put a 5/8' bolt in there.

      Donny

      Support your local hot rod shop!


    2. #682
      Join Date
      Apr 2001
      Location
      The City of Fountains
      Posts
      16,009
      Country Flag: United States
      So the stud that goes into the steering arm broke?
      1970 GTO Version 3.0
      1967 Cougar build
      GM High-Tech Performance feature
      My YouTube Channel Please Subscribe!
      Instagram @projectgattago
      Dr. EFI
      I deliver what EFI promises.
      Remote Holley EFI tuning.
      Please get in touch if I can be of service.

      "You were the gun, your voice was the trigger, your bravery was the barrel, your eyes were the bullets." ~ Her

    3. #683
      Join Date
      Aug 2012
      Location
      Peoria, AZ
      Posts
      1,757
      Country Flag: United States
      Quote Originally Posted by dontlifttoshift View Post
      The first thing I did when I put similar spindles on my car was drill out the steering arms and put a 5/8' bolt in there.

      Thanks for the heads up Donny!! 😃

      - - - Updated - - -

      Quote Originally Posted by andrewb70 View Post
      So the stud that goes into the steering arm broke?

      Yup...
      Lance
      1985 Monte Carlo SS Street Car

    4. #684
      Join Date
      Aug 2012
      Location
      Peoria, AZ
      Posts
      1,757
      Country Flag: United States
      So I think I know why I had the part failure Sunday.

      This is the good one from the passenger side...that hadn't broken...yet...





      And this is the one that broke...







      Frankly, I'm surprised they lasted as long as they did all things considered. These Baer Bump Stop posts have been in these Speedtech Steering arms for 4 years...with just the top half of the taper making contact letting the bottom half move back and forth just slightly.

      There are a TON of people that have broken these tapered studs apparently but I'm curious if they know exactly WHY they are breaking??? I do now...
      Lance
      1985 Monte Carlo SS Street Car

    5. #685
      Join Date
      Apr 2001
      Location
      The City of Fountains
      Posts
      16,009
      Country Flag: United States
      So the taper on the stud is not quite right?
      1970 GTO Version 3.0
      1967 Cougar build
      GM High-Tech Performance feature
      My YouTube Channel Please Subscribe!
      Instagram @projectgattago
      Dr. EFI
      I deliver what EFI promises.
      Remote Holley EFI tuning.
      Please get in touch if I can be of service.

      "You were the gun, your voice was the trigger, your bravery was the barrel, your eyes were the bullets." ~ Her

    6. #686
      Join Date
      Aug 2008
      Posts
      17
      Wow just read the entire thread excellent build with a lot of good info. I am subscribing for updates, I have a 86 T-type with much of the same suspension on it that I hope to get on a track next year sometime.

    7. #687
      Join Date
      Aug 2012
      Location
      Peoria, AZ
      Posts
      1,757
      Country Flag: United States
      So an update with a correction here... It seems that I had forgotten that I removed my Baer Bumpsteer pins when I installed the ATS spindles and steering arms and put in their place a Secret Sauce Allstar ALL56280 bump steer kit.

      The details of the Allstar part are in the pic below, it clearly shows it has a Ford taper, not a GM taper. I guess we can just add this to an increasingly growing longer list of RSRT supplied part failures...



      - - - Updated - - -

      Quote Originally Posted by Turbobuick View Post
      Wow just read the entire thread excellent build with a lot of good info. I am subscribing for updates, I have a 86 T-type with much of the same suspension on it that I hope to get on a track next year sometime.
      Congrats on making it through all of that! You deserve a prize or something!!! :D

      If you ever have any questions just holler, I've probably already been there done that and hopefully can help you out.
      Lance
      1985 Monte Carlo SS Street Car

    8. #688
      Join Date
      Aug 2012
      Location
      Peoria, AZ
      Posts
      1,757
      Country Flag: United States
      Getting tired of getting my tail kicked by cars that corner exit better than mine, plans are in motion...





      More updates to come soon...
      Lance
      1985 Monte Carlo SS Street Car

    9. #689
      Join Date
      Aug 2012
      Location
      Peoria, AZ
      Posts
      1,757
      Country Flag: United States
      3 link parts are in, install has begun. I'm so stoked about this, for sure the biggest upgrade I've made to the car since probably the Big Brake kit 4.5 years ago. I guess the big front sway bar was a big upgrade also, but this install will take care of a need this car has wanted for over 10 years. So happy to finally be making it happen.

      First pics of the parts...



      Upper link frame and axle mounts



      Where the upper link bolts to the frame crossmember.



      There is an included backing plate with locknuts welded to it that slides up between frame and body that the link bracket through bolts too.



      Axle side gets welded to the housing.



      Frame side Pan Hard Bar mount bolts to frame in several locations with load spread all over the frame on both sides. Uses some existing holes to line up and some new holes had to be drilled. Here it is almost in it's spot during mock up.









      Today's tasks involve drilling the holes and getting the frame side upper link bracket installed, then cleaning up and painting all the frame areas before attaching the PHB bracket for the last time. Then the plan is to take it to a friends place to weld the bracket to the housing and fab up some extra support for the axle side PHB mount then install it. I've got a local race on January 16th and really want to finish this up and get some street time on it tuning before then. It'll be tight, wish me luck.
      Lance
      1985 Monte Carlo SS Street Car

    10. #690
      Join Date
      Apr 2001
      Location
      The City of Fountains
      Posts
      16,009
      Country Flag: United States
      Pretty slick!

      Andrew
      1970 GTO Version 3.0
      1967 Cougar build
      GM High-Tech Performance feature
      My YouTube Channel Please Subscribe!
      Instagram @projectgattago
      Dr. EFI
      I deliver what EFI promises.
      Remote Holley EFI tuning.
      Please get in touch if I can be of service.

      "You were the gun, your voice was the trigger, your bravery was the barrel, your eyes were the bullets." ~ Her

    11. #691
      Join Date
      Sep 2010
      Location
      Beach Park IL
      Posts
      2,651
      Country Flag: United States
      Now that your roll center is 23 feet lower than it was you will want more rear spring. Grab some extra bolts and toothed blocks for the PHB and keep them in your tool bag.

      Past that, you are going to love not feathering the throttle on exit. Should be able to mash it and GO.
      Donny

      Support your local hot rod shop!

    12. #692
      Join Date
      Aug 2012
      Location
      Peoria, AZ
      Posts
      1,757
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      Quote Originally Posted by dontlifttoshift View Post
      Now that your roll center is 23 feet lower than it was you will want more rear spring. Grab some extra bolts and toothed blocks for the PHB and keep them in your tool bag.

      Past that, you are going to love not feathering the throttle on exit. Should be able to mash it and GO.
      I'm shooting for a Dan Ballard style inside front tire lift of about 6"...
      Lance
      1985 Monte Carlo SS Street Car

    13. #693
      Join Date
      Feb 2012
      Location
      Central NY
      Posts
      235
      Country Flag: United States
      Can't wait to see how this works for you Lance! Do you think tailpipes will fit over the axle still? I'd love to put one on my Malibu.

    14. #694
      Join Date
      Aug 2012
      Location
      Peoria, AZ
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      1,757
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      Well... I certainly hope so because where I race most of the time, I have to pass sound and as it is right now...it ain't passing sound.
      Lance
      1985 Monte Carlo SS Street Car

    15. #695
      Join Date
      Aug 2012
      Location
      Peoria, AZ
      Posts
      1,757
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      More progress made today. All fab work finished up, all parts freshly painted and shop cleaned up. Tomorrow final install, then road test!!! The turn downs on the mufflers really quieted it down a lot, I think it'll pass sound like this.




      Lance
      1985 Monte Carlo SS Street Car

    16. #696
      Join Date
      Aug 2012
      Location
      Peoria, AZ
      Posts
      1,757
      Country Flag: United States








      Lance
      1985 Monte Carlo SS Street Car

    17. #697
      Join Date
      Apr 2001
      Location
      The City of Fountains
      Posts
      16,009
      Country Flag: United States
      Looks solid!

      Andrew
      1970 GTO Version 3.0
      1967 Cougar build
      GM High-Tech Performance feature
      My YouTube Channel Please Subscribe!
      Instagram @projectgattago
      Dr. EFI
      I deliver what EFI promises.
      Remote Holley EFI tuning.
      Please get in touch if I can be of service.

      "You were the gun, your voice was the trigger, your bravery was the barrel, your eyes were the bullets." ~ Her

    18. #698
      Join Date
      Aug 2012
      Location
      Peoria, AZ
      Posts
      1,757
      Country Flag: United States
      As always with this car, packaging is TIGHT. It's all in there though, and it all fits. Bernie did an EXCELLENT job designing this setup. I'm impressed.









      I hope I don't have to do much work on upper link at track as it's a bit hard to get too, but I shouldn't have too once I find it's happy spot.







      Tomorrow morning I need to swap out the rear springs, then it's off for it's first test drive. Wish me luck...
      Lance
      1985 Monte Carlo SS Street Car

    19. #699
      Join Date
      Aug 2012
      Location
      Peoria, AZ
      Posts
      1,757
      Country Flag: United States
      So I did a bunch of flexing while the springs were out this morning. First I have to say, a 4 post drive on lift makes stuff like this SO much easier than a 2 post.



      So, springs out, driver side full stuff to bumpstop, pass side full droop.

      Here is tire with roll center at lowest point, 6.75"



      And here is that same except roll center is at the highest point 11.25"



      You can clearly see the difference in how the axle\tire rotate in roll by how the tire ends up in the fender. Pretty cool...

      In static form, neither tire ever touches the frame or inner fender. They both come pretty close to the outer fender lip at full stuff though.



      In dynamic form, I was able to get the passenger side to rub just a bit, on the outer fender lip I believe. I set the RCH at 9" for my initial test drive, right in the middle of adjustment range.





      Upper link frame mount in middle hole, sway bar in middle holes, rebound in shocks in middle of adjustment range, RCH in middle of adjustment range...time for a test drive.

      Right away I could feel a huge difference in how the rear end reacted. In hard transitions back and forth at 45 mph the back felt stuck like I've NEVER felt it before. I had a HUGE grin on my face right away. When being a bit more aggressive swerving back and forth I was able to get it to slide the inside front tire just a bit when on the gas...hinting that it's a touch on the tight side like this. Certainly drivable though. I'd race it like this...if I had too.

      I did have a wheel hop problem though. It hops hard, from a dead stop, from a roll, even during a hard 1-2 shift. This is discerning and I need to adjust to correct this. First thing will be raising the front upper link up to the top hole. I also want the rear to roll just a bit less so I think I'll put the rear sway bar on stiffest hole and might put 185# springs in place of the 162# springs in it now. The stiffer springs and more rebound in the shocks may help tame the rear axle down as well.

      Hopefully not too many changes at once and it'll be enough to let me feel like I can beat on it a bit harder next time out.

      I'm also not sure if it's just the extra noise, or if the tailpipe delete option really opened up the exhaust, but it sure feels peppier when on the loud pedal!! Could just be the car forcing itself forward faster instead of just spinning the tires too.
      Lance
      1985 Monte Carlo SS Street Car

    20. #700
      Join Date
      Mar 2020
      Posts
      147
      What made you decide on a panhard bar instead of a watts link?

      I had a nagging issue with my Firebird when it had a panhard bar. It would react differently on opposite direction turns as the body rolled.
      The panhard would cause a lift in the rear on a hard right hand as the body side of the panhard went above horizontal.
      I could feel the rear inside lift & then the front tire slide as it transferred weight to the opposite front corner.
      It did not do this the same on left turns as the leverage of the bar was angled downward in relation to the body instead.

      I'm asking as my panhard was much longer than yours, making me think you would have the same issue to a larger degree with a shorter bar.

      I went to a Watts link & was amazed in the difference, plus there is no side-to-side axle movement as the body rolls.

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