do realize, it is built into every good tune, that when the IAT get up around 100 degrees, the tune begins to pull timing. At 100 it is around 3 degree then ramps up from there. A heatsoaked truck can pull timing pretty easily. Especially with a MAF that has a slow reading IAT sensor. Ive never even had a 60 foot better than 2.2 booo. thats with 4.10 and stall. But im in texas. Turbo 60 foot times will come later.

 

1.94 is still high for 85 deg weather. I used to get 1.80-1.81 in 90+ deg weather on my 5.3 on 28's.. I think you need to try a 3400 9.5" PI Converter, preferrably a multidisk since you have nitrous.

 

I would try 26" drag radials or et streets or go to some 4:10s. Either one would drop it some imo with your current set-up . The 4:10 and 3800 stall would drop it for sure .

 

That cam probably doesn't make enough power down low. I think a higher stall and gears or shorter tires would help alot. Can you run more timing?

 

i believe so, i could go for a ride and verify but truck is broke down..

dont get too desperate rick, wait for good weather before you change anything, except like going to 4.10's, thats always a good mod for some better e/t.s

 

Famoso is a shitty track, the DA there is high for the physical elevation, and all the **** in the air kills power. Make a trip up to Sac you will run faster. We pick up at least .2-.25 tenths on a 10 sec car up there, you could gain even more than that.

 

You need to get a log of this happening. I'd bet you're having an issue with either power enrichment not coming in soon enough or a torque management issue. Could be the power hop setting, stall speed setting, etc, etc. With so many torque management settings in these newer trucks any one of those missed could cause that problem. I doubt a lack of torque from the cam would cause a problem with a 3000+ stall converter. Even in that weather I'd have expected to see around a 1.88 or so. I'd guess 1.7's in good weather with that truck.

 

yup im gonna have 2 wait till good weather