lxcoupe

iTrader: (9)

Curious how many tenths a 4wd run will affect ET? From what I've gathered, it's not advised to shift out of 4wd mid-run correct?

ZO6Ted

I have always shifted out of 4WD as soon as I believe I'll have traction whenever that is. I've done it hundreds of times. Top of first or after the 1-2 shift if good traction. Did it on the '07 and the '14. I'm thinking maybe 1-2 tenths as I recall and that was 1/8 mi.

Also I've heard that some year models didn't actually let go of 4wd even after shifting out but mine have.

lxcoupe

iTrader: (9)

Interesting. Did your 07 have the push button NP246? How could you tell it actually disengaged 4wd when under power?

ZO6Ted

Yes it did and it would blow the tires off if I did it too early in the run

ZO6Ted

It was auto trac not sure of the case #.

Atomic

iTrader: (42)

The manual shift and electronic **** tcases are the ones you don't want to do that with, not sure about the autotrac case. If you take it apart and look at it, when you switch from 2wd to 4wd you are sliding a piece along the shaft to engage a couple keys that hold it in place. If the whole thing is under a lot of torque you are asking to shear it when you try to shift it.

It depends on your power level, but a couple tenths is probably right.

lxcoupe

iTrader: (9)

Atomic you didn't have the autotrac case correct? I believe mine is an autotrac since it has "auto/2wd/4hi/4lo" or is that just the electronic?

Any thoughts on shifting into 2wd mid track with the autotrac? I could have sworn I read some posts back in the day where Parish said he would shift out of 4wd mid-pass. His truck was an 03 though so I believe he would have had the autotrac.

ZO6Ted

Shame on me because I always drove around in autotrac on the 07 and would hit it anytime lol. My bad I had $$ then though so didn't matter. If I had it in 2wd and hit it at 40-50 it would blow them off until 70 on a good traction street. If I was making a dedicated run I shifted manually. The 14 so far is much slower and it is manual. Also I never go 2wd to 4wd. Always 4wd to 2wd.

lxcoupe

iTrader: (9)

You mean 2wd to 4wd under power or?

Atomic

iTrader: (42)

Yea mine is the full 1980s style manual lever on the floor. The electronic version is similar, it just uses a motor instead of a lever. The autotrac case is entirely different.