T Bird C5 swap but driveshaft wont fit April 29, 2009, 12:41:47 PM spent a few weeks searching the internet on this.Ended up with a 1984 Tbird that has a "rebuilt C5" installed but not finished because "the driveshaft wont fit".Apparently it originally had a C5, so I was thinking maybe they put in a C4 or ??? It looks just like a C5 though. Can't find many differences to identify.The problem is that while the driveshaft slip yoke slides onto the output shaft of the transmission all the way down to its original position, it won't fit back on to the differential yoke by about an inch too long. Cant get the drive shaft onto the transmission any further, and the shiny part lines up with the seal, so I know its going in as far as it used to.The only non-original part is the "rebuilt transmission" so I'm wondering if anyone knows how to identify whether or not its actually a C5 and/ or there were changes made to the length of a C5 etc.Will probably have to try to shorten the driveshaft unless someone has a better suggestion.Any ideas? Quote Selected
T Bird C5 swap but driveshaft wont fit Reply #1 – April 29, 2009, 01:06:26 PM Maybe its a t5, i know alot of guys on here have done those, but idk,..... good luck, youll get youre answer soon!!!! Quote Selected
T Bird C5 swap but driveshaft wont fit Reply #2 – April 29, 2009, 01:12:04 PM The code for the original transmission is on the vehicle certification label. This is on the driver's door jamb.Under TR it's the first character of the 5 character code.V= C3C= C5T= AOD2= Manual 5-speed7= Manual 4-speed Quote Selected
T Bird C5 swap but driveshaft wont fit Reply #3 – April 29, 2009, 02:44:55 PM Seems a bit strange you can't get it past the wear mark. You could cut the yoke down some since your talking an inch. but I would ?? whats different. Quote Selected
T Bird C5 swap but driveshaft wont fit Reply #4 – April 29, 2009, 02:50:51 PM A stang driveshaft is shorter but I do not know by how much. Maybe one of those would work. Someone here should know how much shorter they are. Quote Selected
T Bird C5 swap but driveshaft wont fit Reply #5 – April 29, 2009, 03:36:17 PM or a custom driveshaft made from an alluminum areostar driveshaft.We need to know for sure what the old motor was and how close the new one is the the origonal. If you still have the old one, measure them both side by side and post pictures. Quote Selected
T Bird C5 swap but driveshaft wont fit Reply #6 – April 29, 2009, 03:38:33 PM Are you sure the D/S is for the car? Quote Selected
T Bird C5 swap but driveshaft wont fit Reply #7 – April 29, 2009, 05:06:37 PM The original engine code is the 8th character of the VIN.W=2.3 Turbo3=3.8F=5.0 Quote Selected
T Bird C5 swap but driveshaft wont fit Reply #8 – April 29, 2009, 06:15:35 PM the differences between c4 and c5.. one moment and ill come up with some information.http://www.therangerstation.com/tech_library/AutoTrans.htmlappears the pan on a c5 has a hump and the c4 does not... Quote Selected
T Bird C5 swap but driveshaft wont fit Reply #9 – April 29, 2009, 08:08:17 PM Quote from: Kitz Kat;269700Are you sure the D/S is for the car?x2you got a pic of what your dealing with there? what length is the driveshaft for a c3 trans? Quote Selected
T Bird C5 swap but driveshaft wont fit Reply #10 – April 29, 2009, 10:20:33 PM Quote from: the_intimidator03;269721appears the pan on a c5 has a hump and the c4 does not...Not all c5's have the hump,mine has a flat pan,just like a c4. Quote Selected
T Bird C5 swap but driveshaft wont fit Reply #11 – April 30, 2009, 02:19:36 PM Did they manage to swap in an AOD? Is the bell housing removable?C5 same length as C4 Quote Selected
T Bird C5 swap but driveshaft wont fit Reply #12 – April 30, 2009, 07:52:07 PM It has the original 3.8L engine and original driveshaft. The Cert. Label says it had a C5. I checked the photos on the rangerstation site.My trans. does not have the big hump in the pan like a C5 and it looks exactly like the C4 in those photos. It has the slight hump on the driver's side of the pan just like in the in the C4 photo. It looks like the previous owner was sold a C4. Got as far as the driveshaft issue then gave up. Quote Selected
T Bird C5 swap but driveshaft wont fit Reply #13 – April 30, 2009, 08:31:45 PM Did C5's come in different lengths, like the AOD did? Maybe you got a truck C5 or something. That's about all I can think of... Quote Selected
T Bird C5 swap but driveshaft wont fit Reply #14 – April 30, 2009, 09:20:26 PM I would think the bellhousing could be your problem. Quote Selected
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