4.10 gears didn't help my 60' WTF ( Did not spin)
 

I have a 2007 NNBS silverado
Mods. 4.8 with 243 heads
TR 220 cam
Performa build 3600 stall
pacesetter LT headers and Y pipe no cats
K&N CAI
Corvette servo and fair banks shift kit.
Exel 4.10 gears and Detroit tru-trac
The truck also has some heavy tahoe 20's on it

The temp was colder on my runs with out the gears But the thing that gets me is that my 60' didnt pick up any.

Times before the 4.10's
60' 2.21
330' 6.07
1/8 9.30 @ 75.57 MPH
1/4 14.48@95.46 MPH

Times after the 4.10's keep in mind the truck didnt spin at all. Also all I have on this time slip is the 60" and 1/4 times because my wife threw my time slips away.

60' 2.20
1/4 14.57
But my lock-up came on at 88 MPH which was shortly after I got into 3rd gear so I am sure my Et would have been better than before the gear swap. I have corrected the lock-up problem and haven't been back.

Why didn't it pick up the 60' any on the street the truck feels way more violent out of the whole.

Well did you get the power down? In my case I couldn't go more than 1/2-3/4 throttle off the line unless I'd be going sideways down the 60'

What were weather conditions like? Pulling timing? Try running the converter unlocked the whole track, just to see if it helps or hurts...

Are you racing with 20" wheels on the back ?

Pitt

Yes the 20's were on before and after the gear swap. So going from 3.23 to 4.10 I would have thought I would see a better 60' unless I had traction issuses which i didn't.
It isn't pulling any timing.
What all does the tq management do? when I ran the truck the first time all tq management was disabled. But I had a problem with my throttle going into limp mode. A friend who also tunes my cars said that he found out one of the tq mngt. tables needed to be left alone in order for the throttle to work correctly and this did fix my problem.

Weather was around 70 degrees probably 50 the first time.

I dont understand what you mean. If its did I lose any power I dont think so.

i would have to say it's pulling timing also down low.

describe the Limp MOde problem you had. When would it set off? I had a similar problem at one time and was able to fix it in the tune.
The TM would be pulling timing which could be your problem.

I wouldn't call it limp mode. The abuse mode reduction duration (time) was zeroed out. It didn't need to be and was ,for whatever reason, causing the throttle to die at random. Now it is back stock, but the Abuse mode % torque reduction is the same as it was (still zero).

Looking at the logs there is less timing initially (from the main spark tables) than the majority of the run, but it was like that before and after. Other than that TM table (which really has no effect on anything as long as the throttle works) the only change is the 4.10s.

The gearing did cause the problem of the 3rd gear WOT lock up, because it didn't even go into 3rd before. But it does look like it should picked up in the 60' regardless, since everything else was/is the same.

That is deffinitly a tuning issue. The newer trucks are very sensitive to changes like this if the tuning isn't done right. You should have been better than that even before the gear. I'd say you have more tuning to do for the gear and converter for sure.