Ok so i have an 06 cummins with 110,000 miles is that to much to do sled pulling with? i just replaced the ujoints in the front axle, installed a new low stall triple disk TQ and hts valve body, intake, exhaust, diablo sport programmer, fass fuel sytem, boost fooler, ats tranny pan, and guages (tranny temp exhuast temp and boost pressure). should i be worried about anything else breaking? I dyno'd some where around 450hp and 912ftlbs. This is my daily driver and i do not want to break something like my tranny input shaft or spin the stock flywheel. Also if i do decide go through with it should i put my transmission in tow haul and what about my t-case four high or four low?
pretty much any pointers will help. thanks.

 

thats not too many miles on your truck, its just getting started good. as for the gears for pulling, i think it well ultimately depend on the track and your overall setup. for the most part though, 4 low and third gear seems to do pretty good.

 

I had over 120k miles on mine the first time I hooked it, definately lowrange, and with the automatic I would say to put it in drive and turn the overdrive off, the tow/haul mode probably wouldn't be a bad idea either. Good luck, you'll be "hooked" when you start.