Drive shaft shoved up a transmission?

[EFF 83]

I was at my buddy's welding shop and told him I was planning on doing a 4/6 drop to my truck, and asked if he could weld in my C sections. He advised me against dropping the truck because the 6 inches in the rear would change my drive shaft angle, causing the drive shaft yoke to be shoved too far inside of the transmission and lead to premature transmission failure. He said I could have the drive shaft cut and it would work, but I dont want to go to all that trouble. Has any one out there had any experience with this?

[JMB]

i would like to know about this too..iv been told it is called pinion angle and you can get shims to fix it is this true?

[RSBAD454]

Yes when you lower it it will either push it in or draw it out more. Just do the job and see where it is after you lower it. Rule of thumb is you want somewhere close to 3 degree down angle for pinion with respect to ground. for the driveline shove it all the way into the tranny make a reference point and pull it out one inch from that reference point and thats how far it should be into the tranny. to figure out total driveline length you need to measure from the middle of the tranny yoke wear the bearing goes to the middle of the rear end yoke wear the bearing mounts. any questions ask away.

Toys are my game

[chrisr]

My DJM flip kit said that the brackets were made to properly set up the angle, no real probs so far after about 5k miles.    It does push the yolk further into the trans.  I didnt know it would happen, but since the yolk hadnt been in so far, my rear tranny seal went after about, oh, 5 miles....  the fix was a new seal and polishing up the yolk to ride nicely on the seal in its new position.