Driveshaft question

[daredevil]

At static height,car sitting on all four tires level how far should you be able to push the yoke in on the trans if you unstrapped the rear u joint. In other words how far from bottom should the front yoke be at rest. Or how long should the driveshaft be in a 66 coronet with a 727 and 8.75?. Mine seems to be exposed quite a bit and i,m wondering if my new springs and hangers have shifted my axle back.

 

[Meep-Meep]

If you have the tail shaft seal with the boot the radius of the yoke is really close to the boot, maybe 1/2" away. Otherwise you can expect about 1.5" from the yoke radius to the tail shaft. Another way to look at it is you should have enough room plus a little extra to push the drive shaft in to get it away from the rear yoke before it bottoms out.

 

[t67power]

If you go to mancini racing and look up the new drive shafts they sell,they tell you to have the transmission yolk out of the tail shaft one inch.