....well that is the intention anyway.
I'm about to add a coolingmist system and injector upgrade. I'm happy with the spooling of my turbos now (maybe a touch on the slow side) so I don't want to go with larger turbos. Don has suggested that I go with 5.0's instead of my current 3.3's -- truck will see some track time, unlikely to sledpull, mostly street driven. The only hauling it really does is a harris-kayot deck boat. Its a farm truck, but all that means is about 600lbs of feed in the bed for our 'pets.' I don't haul a big horse/cattle trailer at all. So basically I want to do this one more time and that's it. Is 5.0's the largest I can reasonably do, or should I go up a bit more? Also, guesses as to where in HP the upgrade will put me. Thanks all!

 

Man who knows...what tune lvl you runnin on the TNT? 850hp maybe? I'm just guessing.

 

I am going to do about that...or high 4's.

 

Go big. Naw u havung an 03 I see no issue with a 5 but u could see 5.5 with no issue

 

I usually run 7 since 9 doesn't seem to be much improvement (no dyno time .... yet) rail pressure 3 tq 2 timing 4 (off the top of my head)

 

I really like my 6.2's. My setup is almost the same as yours.

 

wow low 12's for 8300lbs? My truck weighs in at 7500, hmmmm now, how do your egt's do with the 6.2's and how about your smoke? thanks!

 

Im thinking 6.2s now cause i will have enough fuel for spray

 

Those times were with the 4.3's and only the Smarty. I have not had the 6.2's to the track yet. It can definately get a little warm, my water keeps it around 1300. Smoke is totally controlled by your right foot. I daily drive them and its not a problem.

 

I was told the biggest don would go on an 03 was a flux 5.6 anything bigger it wont run correctly

 

Okay so we have one "Don won't go larger than 5.6 on an 03" and one "love my 6.2 on my 03" --- so, Don, could you chime in?

 

We will make bigger than a 5.6 for 03-04s. The 03-04s actually do better with big injectors than the 05-07 engines. I have been using 6.2s almost a year and will have 8s in next week. Tim

 

Well given that Don may have misunderstood what my definition of "farm truck" was -- and given my turbo selection, what do you think I should go with to basically max out where I'm sitting right now as far as the supporting mods go? (thanks again everybody!)

 

Id send ur top turbo and get it upgraded to a 64 and run some 5 or 6s and u should see 800 easily

 

dont mean to hijack but i was wondering how big of injector you guys think i could go with with whats in my sig for sled pulling no water injection how much can the 66 handle, thanks