BIGDADDY1969

83-1/2" long center of u-joint to center of u-joint...5" OD Heavy Duty high speed balanced and heat treated 1 pc aluminum from Driveshaft Specialties of Texas..08 ECSB ..I have spun my stock 5" that comes tapered to 4" to over 120 but always had a vibration at 107-ish then one day i stayed in the vibration spot too long and boom there it went.. i have had zero issues with this one pc shaft straight 5" no taper..they said 85" was max they wud go if i remember correct..right now i get a vibration at 115-120 but im not sure if its tires or driveshaft so im not pushing past until i need new tires then im try again and see if it still happens..im pretty sure its the tires

Edit: Max length is 86" @ driveshaft specialties of texas with the 5" HD shaft

carbongmc

iTrader: (10)

If you dont mind me asking, what did the shaft cost you from them?

tiffo60

iTrader: (2)

Oh I have been 130+ a few times, lol

Drove to corpus and back averaging 100-110, just not sure when it's going to catch up with me

RS/SS 4.8

iTrader: (13)

Man had I know this I wouldnt have hit 127 mph with our nnbs crew cab.

08cheyennesc

iTrader: (2)

I need one too,I called driveshaft specialists today for a quote but need to make the measurements for it. I lowered my truck and somehow the stock dshaft was rubbing against the xmember holding the gas tank.

BIGDADDY1969

Couple dollars over $700 shipped to my door .. Both front and rear yokes and splicer u-joints all complete.. Stock replacement from dealer was $540 with no yokes or ujoints .. It was a no brainer for me .. IMO

carbongmc

iTrader: (10)

What kind of power are you putting down, and how fast have youve been brave enough to get it to so far? I ask because I might go this route too.

Area47

i lost both of mine below 100 mph. vibrates it's *** off over 98. speed limiter set at 96 mph.

i got tired of barfing them.

ak2007r6

iTrader: (1)

All this drive shaft talk makes me nervous for mine. Still running the stocker and have taken it well over the triple digits many times, pretty sure I have set my cruise control in the 90's for miles before also. Never once vibrates, hiccups or acts weird. Maybe I should invest in a drive shaft loop till I get a custom DS made.

Choda

iTrader: (1)

I have a ecsb 09 4x4 and have had it 120+ a bunch of time and no prob

I believe it's a stock one piece

Where do they break?

Seems like most of u guys are either 2wd or crew cab w longer driveshafts. Any ecsb 4x4 guys broke yours?