ok guys be honest i wanna know if im set for the dyno 2001 silverado 5.3 sts base turbo kit, sts elec b/c, side mount i/c, delphi #44lb injectors, walbro 255 inline pump, and snow per meth but only want to run 50/50 for safety. tranny stock wit transgo shift kit and vaccum modulator. should i tune for 10 or 12 psi ?????

 

12

 

you should be fine for 12psi, just don't plan on that tranny lasting too long.

 

The only thing I would be concerned with while dyno tuning is the stock driveshaft? I broke mine the first time I went to the dyno, It was not fun and I would not wish that on anyone. I am not trying to scare you but I wish I would have be warned about my driveshaft because it would have saved me alot of money(Corsa Muffler & Driveshaft) and a big headache. I know your driveshaft is probably a 2 piece but I would still get it replaced because the stock driveshafts are not built to go 120mph + Just my 2 cents. Good Luck with everything!

 

Here is my Brand New 4" Steel DOM driveshaft I recieved from Dynotech. Excellant quality, great customer service and I had the new driveshaft in one business day.

 

dammm that d shaft really came loose huh? is anyone here running a stock shaft?

 

The driveshaft did not come loose, it twisted in half when my truck was doing 122mph on the dyno. I have a video of the dyno run when it broke.

http://video.performancetrucks.net/v...0e017f1a2e.htm

 

Im running the stock shaft, but will be replacing it soon. While there are lots more people that don't have trouble with the stock DS than people who do, i do agree that its a good idea to replace it with a stronger unit.

 

I know what you mean, it happened to my truck 3 times, yikes!

It's normally not power that breaks them at 120mph, your truck doesn't have enough torque, they start to wobble at those speeds and break in half. The larger 4" diameter shaft has a higher critical speed.

good luck on that,
allen

 

Get it high speed balanced and it will be fine. Its alot cheaper too.