we went to put the driveshaft in our 69 camaro with a sb and a 4 speed muncie back to a 12bolt rear. and after slippin the yoke into the trans as far as it would go we realized it seems not long enough. I had assumed all the driveshafts were the same except for the t-400 but that driveshaft was shorter if im not mistaken?

My dad says to find out how far the yoke is supposed to go into the tailhousing, does anyone know for sure? It looks like it went farther as it has a faint mark on it now, but it just wont go any farther, and we dont want to push too hard...

If it still wont go, about how much should I be lookin at to have it shortened?

Thx a ton, I wanna drive this beast but nagging things like this just wont stop buggin us smile.gif

gah, i meant its too long... instead of too short.. sorry bout that

What I have been told is to shove the yoke until is bottoms out and then pull it back about an inch or so. Then you need to measure from where the yoke enters the trans to the center line of the rear end yoke.

I would call up your local drive line service to verify how you measure. Once you do that then you can figure out how much you need to shorten your shaft.

If you are using a used shaft with an unknown history you might want to check its balance. It might be better to have a new one made so you can eliminate any vibration issues. You can get them made at a local shop for around $150, at least I did.

One of the problems you run into is that we assume all yokes are the same length. They are not. This will affect the driveshaft length. You need to measure using the actual yoke you are going to use on the car. Factory stuff is all the same but once you modify it, all bets are off.

Anyway, you put the yoke into the tranny all the way till it bottoms out then pull back 3/4" to 1" and then measure to get the driveshaft length. Car weight should be on the suspension.

-Mark.