i believe it was in 3rd gear. the mph were around 114 so i'm sure it was 3rd

 

i couldv'e sworn i heard on here to dyno our trucks in second for this very reason.

 

what can I say "ooops" lol
we're putting in a stronger one we'll see how that one holds up...

 

Damn maybe I should upgrade soon... I did a top end run a few weeks ago and the speedo was long past being pegged out at 120. Guess I got lucky

 

Sounds like the drive shaft might be a weak point in the NNBS trucks... I get a vibration so strong at 100mph that I'm afraid to go any faster. I assumed it was the wheels, but it could be the drive shaft... Hopefully not!

 

If your truck is lowered I can almost guarantee you it's the drive shaft. Check the pinion angle and have it corrected and even then the stock drive shaft is not made to go over 100mph... It looks real pretty when it brakes though... lol

 

That's the weird part, it was vibrating before I put the drop shackles on.
Lets hope I never have to find out how pretty it looks...

 

Na...your cool....its not a NNBS thing...these guys have the aluminum d-shaft...they have been twisting off on dynos since 1999 GMT800

 

um......mine didn't break....

was also researched for bout 45 minutes straight over 100 mph on open roads on a vette run when the vettes were out of commission....(yes the 95 mph governor is gone)..........according to the laptop while tuning it has seen 130-140 but that I haven't seen firsthand........but since the guys from the shop have been stopped in my old vette at 120 mph while tuning when it wouldn't act up on the dyno.......I believe them..

of course I have seen this happen with a 99 pickup on a dyno and it was close to stock as well.

 

Wtf , a nnbs thing ?
and someone mentioned it happens when lowering , am i missing something or what