AOD - C4 swap, lengths? Reply #15 – May 08, 2009, 07:56:54 PM You can buy a brand new x-member from summit by FRPP that is a replacement for the T-5 and will properly locate your C-4. The C-4 will be all the way at the leading edge of the elongated holes. If you want to modify your existing x-member due to costs, the cut, locate, weld method must be used. Quote Selected
AOD - C4 swap, lengths? Reply #16 – May 08, 2009, 09:25:55 PM Quote from: Lightningbird;271307You can buy a brand new x-member from summit by FRPP that is a replacement for the T-5 and will properly locate your C-4. The C-4 will be all the way at the leading edge of the elongated holes. If you want to modify your existing x-member due to costs, the cut, locate, weld method must be used.I assume #397-M-5059-A ?I may go this route for the dual exhaust anyway. Unless someone has used a stock crossmember and dual exhaust. Quote Selected
AOD - C4 swap, lengths? Reply #17 – May 08, 2009, 10:38:01 PM Post up a "WTB T5 double hump mount" on corral.net. Quote Selected
AOD - C4 swap, lengths? Reply #18 – May 09, 2009, 09:33:46 AM Here's why I was somewhat confused. The top pic is the '87 XR7 302 aod crossmember. It's slid all the way to one end. The lower pic is from my '88 Tbird 3.8 aod crossmember. It's centered. Quote Selected
AOD - C4 swap, lengths? Reply #19 – May 10, 2009, 04:13:05 AM You should be able to use the 83 x-member. It looks similar to the T-5.....is it double hump? if not just modify the 87. Quote Selected
AOD - C4 swap, lengths? Reply #20 – May 10, 2009, 08:04:50 AM The difference in the 3.8 & 5.0 crossmembers is surprising, but that's proof the two engines are located differently...Guess I was lucky when I found a '87 Sport to use as my parts car when I did my 5.0 swap, everything fit with no issues at all... Quote Selected
AOD - C4 swap, lengths? Reply #21 – May 10, 2009, 08:59:11 AM I thought it odd, too. I forgot to mention the XR7 was a floor shift, and the 88 3.8 car was column shift. Not sure if that mattered or not. There's a good 1.5" difference between the two, so I'll locate the engine, put the C4 in place, and fit both up in there, and see which is closer. Never can be an easy way, lol. Quote Selected
AOD - C4 swap, lengths? Reply #22 – May 10, 2009, 09:51:17 AM Column vs floor shifter should have no bearing... Have you compared the drive shafts just for giggles??? Quote Selected
AOD - C4 swap, lengths? Reply #23 – May 10, 2009, 10:01:33 AM Quote from: TurboCoupe50;271496Column vs floor shifter should have no bearing... Have you compared the drive shafts just for giggles???No, but I will!! Quote Selected
AOD - C4 swap, lengths? Reply #24 – May 10, 2009, 11:22:50 AM Driveshafts are 1" difference in tube length (47.25" vs. 46.25") with equal length slip yokes (5")The measurement from one crossmember to the other is 1" as well. The 3.8 AOD has 1" to the front space, and .75" space to the back. The 5.0 AOD measured 1.75" space (zero" on the other end).Now that I think about it, I wonder if the 8.8 vs. 7.5 differential would be a different length? Quote Selected
AOD - C4 swap, lengths? Reply #25 – May 10, 2009, 11:42:22 AM Uncle got me the FRPP Xmember for my birthday coming up here in June. Nice to have wealthy Relatives who are also car enthusiasts.My Uncle's stang: http://www.kkpony.com/ Quote Selected
AOD - C4 swap, lengths? Reply #26 – May 10, 2009, 12:56:33 PM Quote from: HAVI;271514Now that I think about it, I wonder if the 8.8 vs. 7.5 differential would be a different length?Nope, they use the same D/S... I have the one in my TC that was originally in the '87 Sport that had a 7.5"... Quote Selected
AOD - C4 swap, lengths? Reply #27 – May 10, 2009, 01:19:57 PM Quote from: TurboCoupe50;271523Nope, they use the same D/S... I have the one in my TC that was originally in the '87 Sport that had a 7.5"...OK, that tells me which driveshaft I have for which, since I didn't label either of them. Thanks!I also looked closer at the 3.8 AOD, and the crossmember is different than the XR7 one, so it appears the XR7 one is already a double hump. Even though it (XR7) is spaced further back, I'll just remove the welds, move it all the way forward, and go from there. Yardwork is almost done, and so I can get going on this thing again. Quote Selected
AOD - C4 swap, lengths? Reply #28 – May 10, 2009, 05:09:00 PM My '87 Sport had the double hump crossmember, it's also in the TC now... As is the shifter, all engine brackets and mounts, A/C compressor, wiring harness, fuel lines, etc, etc... About the only parts that aren't from the Sport, are the 140 speedo & tach(junk yard), engine(LSC) & tranny(Super Coupe)... Quote Selected
AOD - C4 swap, lengths? Reply #29 – July 03, 2010, 11:42:58 PM Back to the tranny crossmember for me. I ground the welds, and moved the "tubes", and the C4 locates good. However, the C4 trans bolt space width is 2.75", and the crossmember hole/slot space width is 2.19" My C4 is from a 1976 Torino. I haven't tried it yet, but since the pad/mount bolts to the crossmember, and the tranny on each, if they interchange, that would solve the width issue without wallowing the holes/slots. Would that work? BTW, I got the engine in, and want to locate the trans now, so I can see if I need to make anymore adjustments on the motor mounts. I have to "stretch" the lower mounts to make them align with the K-member. I'm not sure how much Chuck W mounts are allowed to move.EDIT: I just read on clickclack, that the rubber mount interchanges, so I should be good to go. Quote Selected
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