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    1. #2
      Join Date
      Mar 2012
      Location
      Orange County, California
      Posts
      71
      Country Flag: United States
      Quote Originally Posted by jlwdvm View Post
      I removed the rear suspension and axle from my 69 firebird project and am getting ready to install the 4-link upper cradle. I was under the impression that there were index holes already in the frame rails that helped get the cradle in located in the right spot prior to welding/bolting it to the car. My frame rails have zero holes. It also seems that the cradle is going to have interference with the trunk pan-floor pan in a few spots...is this normal? With no index holes, how do I know I have the cradle in the right spot to hang the rear suspension? Thanks.
      I just went through this same issue a couple weeks ago. I don't think the 69 has the index holes as mine did not either. It also touched in several spots along the underside. I did note signs of a prior collision so I thought it was because of that. However, the car was built in the 60's so there could be some production issues as well. With all that said I "massaged" the areas and kept going until the cradle fit in with little to no interference. The screw in design I had an issue with and ended up "stripping" the holes the self tapping screws made with very little effort. I am going to weld mine in just for peace of mind. It was also useful for me to use a laser and measure everything out so that you are centered before drilling or welding. Also I found the jig to set the upper tabs on the rear end a little too flexible. I fould this out the hard way but luckily was able to correct it. I would use the upper links with the spacers snugged down to tack the upper brackets. Good luck. I hope this helps.






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