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  • #16
    Hmmm David you want to do a double order with me? This might be the way I was thinking of going. Getting rid of that rear leaf and going coil over.
    I dont know what this means but "ASS HATS" is funny

    Comment


    • #17
      $170+ a shock is not cheap. I have one, I need to order 7 more. All the parts are done, I just need to pick them up from the machine shop on Monday. These will be the best ride you will ever get out of a lumina. If you guys wanna do a group buy and buy like 50 of them, maybe Koni will work us a deal. I need 7 so count me in for that many.


      WWW.OverKillEngineeringMotorsports.com

      Comment


      • #18
        I am looking for 4 for my GP only but I have to decide if I am going to go with coil overs or not and that will decide if I get any at all. Need to find out how to do coil overs on my GP.
        I dont know what this means but "ASS HATS" is funny

        Comment


        • #19
          Here are the backs fully assembeled. The bottoms are getting PC tomorrow, and then they are done.

          M







          WWW.OverKillEngineeringMotorsports.com

          Comment


          • #20
            So we would have to just hollow out a old rear strut for the koni shock to fit?

            I never looked at my old struts to see if the top was treaded.........
            Is it?


            Bythe way, are you running coil overs on the rear?
            If so, how do you like them over the stock leaf?

            Thanks
            1991 Grand Prix STE
            3.4 DOHC
            1 of 792 Produced
            Extensive Mods Done

            1991 Lumina Z34
            3.4 DOHC
            Getrag 284 5spd
            1 of 30
            Canadian Z34 Models Made with the Getrag 5spd Wahoooo!

            1980 GMC Sierra Classic C25 With 18,000 ORIGINAL MILES!!!!

            sigpic

            Comment


            • #21
              oh,

              Whats this...BIRCHMOUNT REAR LEAF SPRING?

              Is it stiffer?
              1991 Grand Prix STE
              3.4 DOHC
              1 of 792 Produced
              Extensive Mods Done

              1991 Lumina Z34
              3.4 DOHC
              Getrag 284 5spd
              1 of 30
              Canadian Z34 Models Made with the Getrag 5spd Wahoooo!

              1980 GMC Sierra Classic C25 With 18,000 ORIGINAL MILES!!!!

              sigpic

              Comment


              • #22
                The rears are not threaded. I had a machine shop thread them for me. I am not running coil overs, I love the birchmount leaf.

                As far as hollowing it out, its a little more than that.


                WWW.OverKillEngineeringMotorsports.com

                Comment


                • #23
                  I have coil overs all around (300 lb springs in the back, 350lb up front) with a 7/8" sway bar in the back. Matt (GOT2B GM on w-body) is running a birtchmount in his TGP and I can honestly say there is very very very little difference. I have yet to drive his car now that he has the same sway bar as me though.

                  Mark,
                  Did you ever re-work the price on these? and how long are you going to be offering them?

                  Jamie

                  1995 Pontiac Grand Prix GTP
                  3.4L DOHC
                  My Cardomain Page UPDATED MARCH 10, 2006

                  Comment


                  • #24
                    I said that I would just sell the mounts and what not. I forget the prices I said but it was about 300-400 for everything. there is alot of machining and engineering to make these work. It took us some time, but they are done.

                    M


                    WWW.OverKillEngineeringMotorsports.com

                    Comment


                    • #25
                      Originally posted by HayesPerformance View Post
                      oh,

                      Whats this...BIRCHMOUNT REAR LEAF SPRING?

                      Is it stiffer?
                      The question still isnt answered.. I would like to know too.. Also where did you get the Tubular rear suspension components d.o.h.c?
                      Robert
                      ---------------------------------------------------
                      96 Grand Prix SE 3100 202,000 miles
                      New Rebuilt 3100
                      New Rebuilt 4T60-E
                      Exhaust
                      Drilled/Slotted Rotors


                      95 Grand Prix GTP 177,000 miles
                      White
                      3" Magnaflow Catback
                      Lowered 2" Eibach in front Brichmount Rear
                      94-96 Hi-Po 5 Stars on 245/50/16


                      90 Pontiac Turbo Grand Prix
                      5 Speed Swapped
                      127,000
                      Spec Stage 3 Clutch
                      230,000 mile Getrag 282
                      Emissions Deleted
                      Brand new Engine 1,000 Miles
                      Fully Custom Built car

                      Comment


                      • #26
                        Held MotorSports
                        1991 Grand Prix STE
                        3.4 DOHC
                        1 of 792 Produced
                        Extensive Mods Done

                        1991 Lumina Z34
                        3.4 DOHC
                        Getrag 284 5spd
                        1 of 30
                        Canadian Z34 Models Made with the Getrag 5spd Wahoooo!

                        1980 GMC Sierra Classic C25 With 18,000 ORIGINAL MILES!!!!

                        sigpic

                        Comment


                        • #27
                          Originally posted by HayesPerformance View Post
                          Held MotorSports
                          Robert
                          ---------------------------------------------------
                          96 Grand Prix SE 3100 202,000 miles
                          New Rebuilt 3100
                          New Rebuilt 4T60-E
                          Exhaust
                          Drilled/Slotted Rotors


                          95 Grand Prix GTP 177,000 miles
                          White
                          3" Magnaflow Catback
                          Lowered 2" Eibach in front Brichmount Rear
                          94-96 Hi-Po 5 Stars on 245/50/16


                          90 Pontiac Turbo Grand Prix
                          5 Speed Swapped
                          127,000
                          Spec Stage 3 Clutch
                          230,000 mile Getrag 282
                          Emissions Deleted
                          Brand new Engine 1,000 Miles
                          Fully Custom Built car

                          Comment


                          • #28
                            any dynographs for the shocks?

                            I need to get replacement shocks for the fronts as well and if these are drop ins I might be interested.

                            Comment

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