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Jims 66 GTO

  • In most cases they also added the extra holes to locate the Transmission Crossmember for the Turbo 400.  Of course they did not add the holes on the other side.  Makes me wonder.

    • In most cases they also added the extra holes to locate the…
  • This is the area that the OEM Crossmember would attach to.  You can see that it is raised up a bit and also in the way if I was to weld in the frame.

    • This is the area that the OEM Crossmember would attach to.…
  • So we have a problem when it comes to this area.  There are many ways to modify the Crossmember.  Of course the plate that is added to this area is hard to modify.  It would also weaken the Box.

    • So we have a problem when it comes to this area. There are…
  • In the case of the Non Boxed area of the Frame the Crossmember just rests on the bottom of the section.  This is an ok manner of attachment.

    • In the case of the Non Boxed area of the Frame the Crossmemb…
  • Pontiac designed a plate to Cage the Rubber Tranny Crossmember Isolator.  It was designed to absorb minor vibrations, and movement that the motor and Transmission would experience.

    • Pontiac designed a plate to Cage the Rubber Tranny Crossmemb…
  • With a High Performance Engine you need to eliminate such flex points.  In this case the Tranny Tail Shaft Mount will absorb the needed vibrations.  The Crossmember will be attached solid.

    • With a High Performance Engine you need to eliminate such fl…
  • By eliminating this area of design imperfection the Frame will be Preloaded.  It will become a Structural Member.  I weld them up in a special way to preload the whole frame.

    • By eliminating this area of design imperfection the Frame wi…
  • The first step is to load the Turbo 400 on the cart.  You have to make sure that it is level.  When you get a nice pan like I install on tranny you might also want to cover it with a rag.

    • The first step is to load the Turbo 400 on the cart. You ha…
  • Once the Rubber Isolator and the Formed Metal Cage are gone you can see that there is only about a 1 inch area on the end of the Crossmember that rests on the frame.

    • Once the Rubber Isolator and the Formed Metal Cage are gone…