Transmission mount

Discussion in 'General Automotive Tech' started by 12ozMouseBoner, Oct 7, 2019.

  1. 12ozMouseBoner

    12ozMouseBoner Well-Known Member

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    Hey guys,

    1988 Colony Park, 5 speed swap (m5r2).

    So I've decided to change out the trans to a mazda 5 speed and the current crossmember is a couple inches short. So, anyone know if a super coupe crossmember could work on an 80s pbody? Since the SC had they're own version of the m5r2, Im curious if the SC crossmember would be a possible candidate without having to reposition the current mounts.

    Thanks
     
  2. Silvertwinkiehobo

    Silvertwinkiehobo "Everything that breaks starts with 'F.'"

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    What do you mean by short? Short framerail to framerail? Short in height? Short in not far enough forward?
     
  3. 12ozMouseBoner

    12ozMouseBoner Well-Known Member

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    short as the crossmember mounting holes are 3 inches too short towards the engine bay for the m5r2's mounting plate to line up. sorry about skipping the details. I haven't even checked height clearances yet, I may have to get a custom member.
     
    Last edited: Oct 7, 2019
  4. Silvertwinkiehobo

    Silvertwinkiehobo "Everything that breaks starts with 'F.'"

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    If your car had an AOD, there should be a second set of holes for Panthers with a C4 auto, and if not, just carefully drill new ones, or attach a 1/8" steel plate with holes drilled to attach the plate to the mount studs, and holes to match the slots on the crossmember. If there's a press brake available, see if you can make a pair of bends that drops the mount end down in order to match the height of the crossmember.
     
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  5. 12ozMouseBoner

    12ozMouseBoner Well-Known Member

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    Could an extension handle 300+ hp without flexing? It did have an aod a while ago, and I do see the other mounting hole you're talking about. But the spare hole is set forward towards the bay. Thankfully a couple of the shops around here are willing to let me use their machinery.
     
  6. Silvertwinkiehobo

    Silvertwinkiehobo "Everything that breaks starts with 'F.'"

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    The spare holes allow you to move the crossmember toward the engine. A V8 M5OD is made to fit into Ford trucks, when the crossmember is in the right position, so it stand to reason yours can be moved forward to accommodate this combo.
     

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