Guest Anonymous Posted June 1, 2001 Share Posted June 1, 2001 I'm getting so close to putting this thing together, it's driving me Crazy, Ha! My Question - I just got my driveshaft back, and it's measuring 19-3/4 inches NOT 20-1/2! I know there was a half inch slip room, but now I've got a shaft with 1-1/4. Should I be concerned and get another made, or will this work? Should there be enough length on the splines of the yoke to still be Okay? Quote Link to comment Share on other sites More sharing options...
pparaska Posted June 1, 2001 Share Posted June 1, 2001 There may well be enough spline engagement (not that I'd trust it), but the issue is that the u-joint is now spaced back so far that any lateral play in the tranny output shaft will be exaggerated at the u-joint, causing possible vibrations and wear on the output shaft bushing in the tranny. Quote Link to comment Share on other sites More sharing options...
Guest Fast Frog Posted June 1, 2001 Share Posted June 1, 2001 What tranny are U using? 19 3/4" - 20" fits a T-5 5 spd and 700R4. The 20 1/2" fits the TH350&400(I think) Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 2, 2001 Share Posted June 2, 2001 Just a random thought, but doesn't it depend on where you are locating your tranny, etc? I know I just had mine made and it is 26.5 inches long. Just my .02 sean ps, if you take it to a drive train place, and give them the measurment from your back of tranny, to your plate on your diff, they will do it up nice Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 2, 2001 Share Posted June 2, 2001 For the T56 (it can vary as stated depending on engine location) but mine was 19 1/8". Most shops will understand center to center measurements (center of each U-joint. I bolted on the JTR flange, and then put the U-joint in the tranny, slid it out a ways (about 1/2 to 3/4" or so) and then measured from the transmission yoke U joint centerline to the JTR Pinion adapter U joint centerline. Came out right much to my surprise.. If you gave them a measurement and they did it differently I'd sure have a discussion with them about it. Regards, Lone Quote Link to comment Share on other sites More sharing options...
BLKMGK Posted June 3, 2001 Share Posted June 3, 2001 I've not yet ordered mine. I currently don't have a yoke either. Looking at places like Denny's Driveshaft they seem to want a measurement with a yoke. Are you guys finding that the shops will take a measurement from the back of the trans instead and provide a yoke with the shaft? This step is one of the next ones for me Quote Link to comment Share on other sites More sharing options...
pparaska Posted June 3, 2001 Share Posted June 3, 2001 They might be able to take a measurement made from the end of the tail shaft, but it'd be better to install the adapter on teh diff, get a yoke, install it, pull it out about 3/4" and measure the u-joint cup center-to-center distance like Lone said. That's typically what they want. I'd think that if they had a yoke in their hand, and you told them how much distance you wanted between bottomed and running (3/4") they could figure it. But why leave that to chance? Quote Link to comment Share on other sites More sharing options...
BLKMGK Posted June 4, 2001 Share Posted June 4, 2001 Well, that's EXACTLY what I'd like to do. Unfortunatly every time I've thought I've had a yoke lined up it's fallen through. Someone promised me a cro-moly race unit, never came through. Someone else had one lined up for me through a friend - fell through. I hesitate to goto the dealer as I'm sure that if I do that it'll sting bad. I'll look a little harder but so far I've not been real successful (sigh). Since the TH400 yoke is supposed to be the same you'd think they'd nearly fall out of trees! Even a Junkyarddog.com search came up empty which REALLY surprised me! I DID finally measure today though. Flange to back of trans was 23.5 inches. Adapter U-joint center to back of trans was 22.5 inches. Looks like I'm probably pretty close to what others have IMO. Quote Link to comment Share on other sites More sharing options...
Guest Locutus Posted June 4, 2001 Share Posted June 4, 2001 BLKMGK, You are using a T56, correct? It is my understanding the yoke is the same as the Turbo 400, have you been looking for any yokes from cars and trucks with the Turbo400? I know they are everywhere in junkyards down here. You might have to buy a whole drive shaft but the junkyards practically give them away. Mike Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 7, 2001 Share Posted June 7, 2001 Sorry for the dumb question here, but what is the yoke? Quote Link to comment Share on other sites More sharing options...
pparaska Posted June 7, 2001 Share Posted June 7, 2001 A yoke, in general is a part that holds a U-joint I believe. But what we're talking about here is a Slip yoke - that slides on the splines of the output (tail) shaft of the transmission and holds 2 cups of the front u-joint. Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 7, 2001 Share Posted June 7, 2001 A yoke, something funny in Sweden? Lone Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 8, 2001 Share Posted June 8, 2001 Hey Guys - thanks for all your comments. The shaft is going to work afterall. There is still plenty of it going up in the tranny. I very well may get a new one made on down the road that is just a hair longer like it calls for. But for now, this is going to work out fine. I've got a 700R4 in it, and hopefully it'll be roll'n before long. Thanks Again Quote Link to comment Share on other sites More sharing options...
BLKMGK Posted July 2, 2001 Share Posted July 2, 2001 WOW! Just got off the phone with Denny over at Denny's driveshafts up in New York www.dennysdriveshaft.com What a nice guy! Their "heavy duty" driveshaft in the length that we require (T56->R200Neapco) is going to be $189 prior to shipping. This is a serious shaft but not quite their top of the line model. Since we all have issues with breaking things other than the driveshaft it wasn't recommended that I go with the top of the line model. I was also told not to worry about an aluminum shaft since the weight savings would be nearly nill on this length of shaft. He'll have it on my doorstep when I return from Las Vegas in about two weeks ready to bolt in. Solid Us that are maintenance free and if I ever need work done to it they will do the labor for free and just charge me for parts if I ship it to them Scottie and others - he seemed VERY familiar with 'Vette rears and builds shafts for them. He does do SOME CV work but I'm not sure how much he can do of the type we use. I didn't ask him if he could build stub axles though, I figure someone who builds custom axles would be th eone for that. Anyway, so far a VERY good experience and a super nice guy to talk to on the phone. I gave him my measurements from Picture B and the flange to back of trans measurement I posted here earlier and he says I'll have no worries when it shows up. Whew, another step taken! Starting to count down here guys... Quote Link to comment Share on other sites More sharing options...
nazar Posted March 22, 2006 Share Posted March 22, 2006 from the center of the yoke to the diff flange, i measured 25.5" does that sound right? Cross my fingers, cause the driveshaft will be done at 4pm, so we'll see, i hope i had the diff positioned in the correct angle, the rear mustache bar spaced it front to back, i just hope i got the front height close enough, we'll see Man its getting close, just finished up all the clutch line, slave, master, i got a aluminum slave drilled and taped it so i hope it works out now gotta go to a junk yard and get a 240z clutch pedal, lol, my car is missing it Tomorow wire up some gauges. last thing im waiting for are my halfshafts from MML, and then i'll be ready to at least take her around the block, open headers, lol Quote Link to comment Share on other sites More sharing options...
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