Looking at your dyno chart:


You are making (roughly, kinda hard to tell from the small picture)
~490HP & 420TQ @ 6200
&
~475HP & 390TQ @ 6500

I would say increase your shift RPM in 1st by 100 and 2nd by 200-300. Your still making good power.

Currently when you shift into 3rd @ 3800 your making ~350HP, if you bump up your 2-3 shift points until you shift into 3rd @ 4100-4200 you will be making ~380HP. The torque between those RPM is roughly the same. I say just get some logging equipment and play with your shift RPMs. IMO a gear change would be expensive since your 4X4 and untill you burn up the tires this seems like a cheaper fix.

 

Smaller rear tires for the strip would do it for sure and I'm looking for some.

BlackGMC, this is what i was thinking too. Shifting 1-2 @ 6300rpm (instead of 6200)
and extend the 2-3 to 6400-6500 (from 6200) would get me into 3rd at a better rpm.

 

How tall are you tires now? Are you launching in 4X4?

 

Tires are 30.5" and yes, 4WD launch.
My launches were consistant 1.82 60's last trip out.

 

If you switch to smaller tires in the back and you launch in 4WD will that hurt anything? Because your drive ratio in the back will be different from the front.

 

Yup,
I guess that's out

 

A 29" tire would makea huge difference.

 

 

no cause if he went to a smaller tire why wouldnt you go with like a DR? M and H 28" or the m/t et street 28" or the radial in 26". ALL are gonna hook better. I think you wont have a problem hooking in 2wd with those tires.

THe 26" radials I have cut back to back 1.75-74 60' with me spraying out of the whole, through a controler and they are hooking. You wont have any problem in 2wd with a DR/slick. So then no launching in 2wd in this case wont hurt anythign lol.

 

For now I think I'll try adjusting the shift points as suggested. I dont think i'd really want my rear end to feel all the torque i could give it