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350THM Transmission Crossmember

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  • Transmission / Overdrive: 350THM Transmission Crossmember

    I have never been happy with my crossmember fabrication when I changed the trans to a 350THM in my 62 Lark V-8. Anyone have pictures of one they fab'd, that has proper clearance for the dual exhaust and functions well ? As the weather turns and the roads are salted here in the Northeast, I'll put the Lark in the shop.
    Thanks !

  • #2
    Just curious, would one from an Avanti II work?
    78 Avanti RQB 2792
    64 Avanti R1 R5408
    63 Avanti R1 R4551
    63 Avanti R1 R2281
    62 GT Hawk V15949
    56 GH 6032504
    56 GH 6032588
    55 Speedster 7160047
    55 Speedster 7165279

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    • #3
      Which crossmember are you talking about, the front one under the bellhousing or the rear you mounted the trans tail to?

      This is the front one I made to replace the stock one and rear engine mount.
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      Click image for larger version  Name:	IMG_0862-2.jpg Views:	0 Size:	84.1 KB ID:	1869831
      As you can see I mounted the trans tail to the stock "wing" crossmember.

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      It bolts in between frame brackets which are bolted thru to the original crossmember mounting holes, and also carry rear engine mounts bolted to the trans adapter plate to replace those lost by removing the stock belhousing and crossmember.

      Click image for larger version  Name:	IMG_1093 dump pipes.jpg Views:	0 Size:	53.4 KB ID:	1869833
      Dual exhaust fits under it quite well. I could have made it fit up higher, but I made it before the trans was fitted and "guestimated" it's height. It works out well though, as it's lowest part is the same as the low point of the exhaust and it serves to protect it from speed bumps.

      It's made from two lengths of 1"x1" x 1/8" square tube welded together to make a 1"x2". It was salvaged from a scrap pile that way. I just cut the needed angles on it and welded it to fit. There is a cross tube on each end that bolts into "clevis's" on the frame brackets.

      Click image for larger version

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      Last edited by bensherb; 12-11-2020, 11:59 PM.

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      • #4
        WOW ! That looks great !! Sorry I didn't get back here sooner, but we had a situation here. Back on track now. Thanks for your help !

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