Its time to see what she does

[bigsexy]

So Im taking my truck to the track on the 28th for test and tune. I have run cars and other rear wheel drive gassers, but never a diesel. Any advise on how to get good times? Do you all shift and at what rpm's or leave it in drive and turn the overdrive off? What level of boost or rpm"s to I launch at? 2 wheel drive or 4 wheel drive? Last question is what time do you all think I will run? I know its not a big horsepower truck, but I will have fun with it. Im also in colorado so altitude will slow my time down compared you u all at sea level. Any other advice would help. I am also waiting on a valve body to put in as while.

[bigsexy]

Just remember any help is good help

[cotton]

Personally, I would launch in 4x4, holding the brake as high of rpm as the brakes will hold. However, if I break something, it's my truck to replace it on.

[no-tel-in]

4hi launch with at about 2k. and on the issue of od on or off, if your truck will shift correctly, leave it off, it will know when to best fall in. If you think it will prematurely fall in od, then turn it off and then hit the buttin when you hit 2500 with the tq locked up

[bigsexy]

yeah I'm not sure with my bigger tires what it will shift to in a 1/4 mile. Since that throws off the gearing. I guess I'm use to old gassers, I always get better times shifting. So what your saying makes since. Thanks

[01flatbed]

how do you recommend launching a manual? side step the clutch? sorry to steal the thread.

[Josh99]

Not to derail either, but what if I have manual hubs? Can I still launch in 4hi and shut it off after 2nd gear?

[bigsexy]

I don't think you can, I think your not suppose to take it out over 30mph

[roccodart440]

Originally Posted by 01flatbed

how do you recommend launching a manual? side step the clutch? sorry to steal the thread.

Take the slack out of the drivetrain, IOW clutch up high enough that it is making some contact but not moving the vehicle. Easier on drivetrain and better 60ft times.

[INTERNATIONAL7.3]

i have locking hubs and the switch inside? can i lock my hubs manually and or auto from inside the cab?? i havent had to use 4WD yet so i dunno

sorry for the stupid question... just didnt get any snow last winter and havent had my truck for very long..