you'd imagine your suncoast could handle that, but that is a lot of boost pressure to launch at.

 

My converter is loose enought that all the power isnt going to the ground my truck has done over 100 boosted launches. I dont recomend doing what I have done as I was trying to prove the limits of what these trucks in stock form are capable of and too be honest with my 13.3 pass the last pass I made in this setup I didnt launch it like I usually do the smarty was new too me and I didnt want to push my luck any more my 60' on that pass was .2 slower then it usually is so a 13.1 or 13.2 wouldnt have been out of the question and a small shot of nx could possibly have gotten me in the 12s but I may have also broke if i had done so.
As far as me stating for him to do a boosted launch I was meaning for him not to leave at a idle to stall it up a bit in 4wd so it wont fall on its face b/c the first 1/8 is where the race is won in a diesel and we all know that those d-maxs will wad up like a small block v8 and flat out get up and go of the line.

 

I had an 02 Duramax for a couple of years and it would run like no other. It had an Edge module on it. It would take my Dodge at take off but top end it would be a race.

 

As far as what psi I was leaving at 20psi wasnt uncommon but launching at that psi on a stock trans is different then launching at that psi in a aftermarket trans. Stock will slip and not all the power will make it through the drivetrain, aftermarket will not slip and everything is going to the ground.
TCR:
As far as you breaking shafts these billet shafts you state you had, you may want to check into them. My best friend upgraded his complete trans left stock output and stock int. shafts broke stock output right out of the shop. So he ordered a billet and we put it in and went to the track the next friday night he spun all 4 off the line and ended up breaking the intermediate shaft. So we pulled the trans apart on examination the we noticed that the supposidly billet output shaft from suncoast had twisted we sent them pics and they warrantied it and said that their had been a bad batch of shafts from one of the main suppliers (their are 2 main suppliers of shafts in the u.s. from what we gathered from them) they simply didnt do the heat treating process correctly and they were billet but not hardened. They warrantied it needless to say you may want to check into that shafts can get expensive at near $700 apiece, any $ you can save helps.

 

honestly, that dmax will run you. smarty jr with stock tranny- by the time your converter locks up he will have a couple trucks on you and continue pulling.... i mean run him and see what the outcome would be, but in my mind i have seen dmaxs run and they haul some ***. consider it a learning experience, and maybe will give you an idea of what direction you want to take your truck in.

 

If this guy does not have a built tranny he will limp out so fast a stock cummins will take him. The allison has the input shaft to with stand boosted launches in stock trim but the clutches are as week as ours. One of our trucks 06 lbz with the new PPe hot + 2 is useless with the stock tranny.

The diablo aaken stack is close in power. Most shops sell the stack and then de-tune the aaken so that the tranny wont limp out. The idea for the diablo is so the customer can reset the CEL and get the truck out of limp mode.

7psi boosted launch every now and again will be fine with the stock converter (its loose).

Have some fun enjoy your truck! Thats why we are here!!!!

 

Back on topic he will run you, but so what see what she has and come back stronger later!

 

CReed, thanks for the info! I'll find more out today, this particular billet shaft snapped in two and I'm not sure of the condition of the transfer case input shaft yet. My whole point was some of you guys w/ newer trucks and a Smarty alone have as much power as I do. I'm breaking built trannies w/ only 500hp+/-.

 

I've never heard of any shops detuning the van aaken. It monitors transmission slippage and derates it self accordingly.

 

If you want to make it more interesting the first time out,I would do the lock up switch too.I launch in 4wd at 10psi,lock the converter in 2nd gear,and everything seems to live very well.My tranny and converter are stock,as is my tire size.If you don't have a gauge to watch the boost,then I would not recomend the boosted launch.Larger tires can also contribute to shaft breakage.I still think you should run him just to see where you stand.

 

better yet hook up to him and watch his alum front diff explode . then call a rool back for him .

 

He told me that he has a switch in his truck for 60 or 120 hp. He keeps it on 60. As we left work today, we got into it from about 35mph. He pulled away slightly but not by much before we both had to slow down. I was very impressed. I think that he was pretty shocked by the look on his face. I would bet that I have at least 1500 lbs on him. Looking forward to doing it again from a standstill real soon.

 

Cool.But I bet he is set on kill nect time.

 

You're probably right but I'm not so sure that he may willing to do a 4wd launch. Never tried it myself but it sounds like I shouldn't have a problem.

 

If you can find that sweet spot in your converter when you stall it up you will have a little better luck then just giving it a little gas while stalled up in 4wd. Brake it in 4wd and then gas it up until the truck tries to start pulling through the breaks then back down a 100 rpms or so and thats the sweet spot.