Dropout Crossmember For My Tremec 5 Speed

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John Eplen
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Dropout Crossmember For My Tremec 5 Speed

Post by John Eplen »

I finally got started on trying to figure out how to get this Tremec 5 speed tranny in my T. I've had it since last April w/the intentions of having it in for the Chattanooga Nats. Then I got the cute idea to polish the Tremec (already posted a few pics after I finished a couple of months ago) & that ate my lunch time wise. Finally started after the pups & me got back from Weelstang's Artesia run. I talked to Deckofficer & he told me that when he put his Tremec 5 speed in it was not an easy task and, if I remember correctly, he already had a dropout crossmember. My crossmember is welded in. Thought I'd try & post some pics of what I've done so far.

This 1st pic shows the original cut on the passenger side.
MVC-004S.JPG
This 2nd pic is after I cut the drop out loose from the sides & K-member installed when I put the Jag in.
MVC-005S.JPG
This 3rd pic is the drop out after it was cut out. There are only 2 rear motor mount holes which was all the original Borg-Warner required. The back legs will have to be shortened & both sides will have to be narrowed.
MVC-006S.JPG
I will be building 2 U shaped boxes w/this dropout being welded to the inside U. The outside U will be welded to the crossmember sides & K-member on the T-bucket frame. The inside U will capture the dropout & will be a welded together for the dropout section. I cut 3 pair of flanges to make each U. I got a 6' piece of 1/4" X 2" cold roll to make the flanges (for lack of better word) & then spot welded each identical pair together for drilling/threading for 7/16 X 14 bolts.

This 4th pic is the back plates that will be welded to the K-member. Only the back plate will be welded to the K-member although I will have the inside plate bolted to the back plate to keep to avoid a warp. I drilled & tapped a 5/16" hole at top C/L to keep the plates solid against the K-member. I'll break the spot welds before the back side weld starts.
MVC-007S.JPG
This 5th pic is showing a mock up of how it will be put together. I still had some additional changes & reshape work to do at this point, but I had all the holes drilled & threaded since I will also keep the inside flanges bolted to the outside flanges when I weld the outside to the frame & K-member to avoid a warp anywhere.
MVC-008S.JPG
This 6th pic is a side shot.
Well, I guess you can't post more than 5 pics. I have three more pics but cannot get the 6th, 7th or 8th to register. Also, I haven't been able to figure out how to post in sequence so these pics & the descriptions may not match.
frank_a
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Re: Dropout Crossmember For My Tremec 5 Speed

Post by frank_a »

Boy John, you are one dedicated dude! Here I'm stressing over moving my tranny mount back 2-3/4" for my "new" 700R4. Looks to me like yer doing a great job as always. Those pics should help other folks with the same idea. I have room for a clutch, but overdrive is about all I'm doing different.

Keep up the good work!

Frank
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mike wade
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Re: Dropout Crossmember For My Tremec 5 Speed

Post by mike wade »

John for the other photos just post a reply to the first set of photos............Nice job you are doing, I hope that you get it done in time for Carson City....................

Mike
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John Eplen
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Re: Dropout Crossmember For My Tremec 5 Speed

Post by John Eplen »

Thanks Mike, I'll try doing that right now. John
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John Eplen
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Re: Dropout Crossmember For My Tremec 5 Speed Part 2

Post by John Eplen »

MVC-010S.JPG
OK, let me see if I can post these last 3 pics as Mike suggested.
This should be pic #6 which is a side shot of the previous last pic. I welded alloy lock nuts on each outside flange which register inside the L. & R. original crossmember stubs.
MVC-009S.JPG
This is Pic #7. I used my Harbor Freight belt tensioner to press the side flanges against the crossmember stubs at about a 5o angle. The small C-clamps hole the drop out piece at the original angle that it was at when originally part of the K-member.
MVC-010S.JPG
This is the last pic #8. I'll probably have some more later this week since I've got everything to the point of tacking &
MVC-011S.JPG
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mike wade
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Re: Dropout Crossmember For My Tremec 5 Speed

Post by mike wade »

Right nice project you are doing John.....I may have to lay down under that car just to see that work.......Go for it and look the photos are there........Thanks for posting the photos.......... :lol:
TODAY IS THE OLDEST YOU'VE EVER BEEN, YET THE YOUNGEST YOU'LL EVER BE, SO ENJOY THIS DAY WHILE IT LASTS
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