69 C10 with a 6l90 transmission HELP

[AussieinNC]

A word of caution....the large tri flange drive system is designed to fit into a vehicle with a rear end that does not move relative to the vehicle chassis.

If the vehicle you are installing this into has a live rear axle, you MUST have some form of slip joint in the drive shaft to permit the driveshaft to move in and out of the transmission with the movement of the suspension.

Unless you are running something like a corvette independent rear end, you should have a slip joint in the driveshaft.

[reddogg]

I have the driveshaft taken care of through PST. It will have a slip yoke. I am just wondering about the clearance under the cab and the rear cab support it doesn’t seem like it will clear without cutting it

[Joyridin]

Originally Posted by reddogg

I have the driveshaft taken care of through PST. It will have a slip yoke. I am just wondering about the clearance under the cab and the rear cab support it doesn’t seem like it will clear without cutting it

Do you have a picture of the crossmember by itself?

[reddogg]

From the bottom

[Joyridin]

Originally Posted by reddogg

From the bottom

Where the rubber mounts sits on the crossmember is about 1.75" from the bottom of the frame. That is the dimension on my truck. I have a Tejas crossmember in my truck with a 6l80 transmission.

Just looking at yours, it looks to be a bit higher than that, but it is hard to tell. Your trans might be bigger than mine on the tailshaft also.

[reddogg]

Thank you for that it gives me something to work with.