sevenracer
sevenracer Reader
10/1/20 10:02 p.m.

I'm investigating putting a flange output trans in a live axle car (FB rx7).  Anybody here done anything similar?

Looks like some Ford explorers or bronco's used a slip joint in the driveshaft with u-joints at either end.

Any reason this wouldn't work for what I'm trying to do (assuming sized correctly, etc).  Is this something a run of the mill driveshaft shop could fab up - assuming I can get a mating flange for the trans?

 

 

 

Patientzero
Patientzero HalfDork
10/1/20 10:19 p.m.

My 2007 Mustang has this style of driveshaft

tr8todd
tr8todd SuperDork
10/2/20 5:43 a.m.

The driveshafts we have made up for TR7 and TR8s have flanges at either end and a slip yoke towards the front.  All Spicer components and runs us around $325 all in.  Made up at a local hydraulics/driveshaft shop.  We also had a similar one made for when we put a Ranger 2.3L Ford and 5 speed in a 55 Hillman Husky.  Rear end was a Dana 44 from a postal Jeep.

Yes it will work. Lots of driveshafts use that configuration.

 I had zero luck getting someone to build one for me due to odd axle and transmission flanges so I ended up building my own. Sort of. It uses CV joints instead of U-joints and a slip joint.

 

 

Pete. (l33t FS)
Pete. (l33t FS) MegaDork
10/2/20 7:26 a.m.

The only difficulty is you need to watch your driveshaft speed.  IIRC a driveshaft with a slip spline in the middle has more harmonics issues.  Talk to your driveshaft shop.  

sevenracer
sevenracer Reader
10/2/20 1:56 p.m.

In reply to Toyman01 (Moderately Supportive Dude) :

Any reason you chose CV joints vs u-joints?  Was it just based on what flanges are available?

In reply to sevenracer :

The transmission had a CV flange. I was afraid a CV and a u joint would fight and I had to build an adapter either way. Using two CVs let me eliminate the slip joint completely.

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