Driveshaft set-ups for 4L80 swaps...what's YOURS?

[JeRM82]

I realized that I need to step up to a 4L80 for my 07 RCSB.....I'm just not sure if I want to keep my stock drive shaft and just put a different U-joint on it with a shorter slip yoke, or just get a drive shaft made for it.....I keep seeing RCSB trucks with drive shafts breaking on the dyno like thier going outa style....and I would like to avoid having that problem.....SO....if ya have a 4L80 in your RCSB truck....what did ya do to the drive shaft to make the swap complete and not vibrate......and did you keep the stock rear end in the truck?

[ducky]

If your located in Austin, I would strongly recommened getting yours shortened through Austin Drivetrain. They did that for ChevyLee for a couple hundred and it's a good investment.

[JeRM82]

I'm in California...well....the "crotch of the armpit" of California...Ridgecrest....theres only two things out here....METH...and the BASE.........I work on the base, and don't have to "study" for a piss test...HA HA

[txarkitekt]

I have seen people get away with throwing the 1350 yoke on there and being just fine. But if that scares you, get a driveshaft loop.

[PitchBlackC3]

What is the actual difference in length?

[RedHeartbeat]

I would suggest going to a steel driveshaft with 1350 joints. Get a new one built if you must. Many local builders can build you one from scratch for a very decent price. Get a 1350 yoke for the rear end if you don't have one on there, too. My 2007 has a steel shaft but it makes me nervous with all the surface rust on it. I'll likely have one built when I put the 80e in, myself. Call your driveshaft builder and ask what measurements you need to provide them to build you a new one.

[99regshort]

I am wondering this also. so let me get this straight, i can use my stock shaft if i change the yoke on the diff? is there anything elce to it? u joints, slip yoke??

[zeake]

Precision Shaft Technologies, Custom Driveshafts

This company is excellent.

[thelsx]

well I getting the swap right now on my truck and I going with a driveshaft from (Driveshaft unlimited) at San Antonio and for the rear end I left the 373's but went with a Eaton posi.