Hello Everyone, I'll be purchasing the STS within a few months. I want to know how many STS owners are running stock internals and at what safe psi?

What about the tranny and rear end? I have a 04 Denali XL 6.0L.

Richard

 

Cant answer your question but can Welcome you to PT.net! Someone will be along shortly with STS experience!

 

10psi stock internals, no IC.....yet.

 

Wow, thats pretty good. Im planning to get the FMIC and larger pump and injectors. If I can get my truck running low 13's all day Im happy.

 

WOW! 10psi and no I/C? What kind of IAT's are you seeing?


LOL, i would like to get high 13's. Hopefully this I/C im finishing up with will help me get there.

 

I will be running 11 soon as I get everything hooked up. I will find out the max safe PSI soon as I get my 408 built

 

It's a Denali XL....like a Suburban? That's a big *** truck to get running 13's. I'm not saying its not possible, but that would be awesome to see. I know there are guys here that are running +12psi on stock internals or at the most rod bolts.

Go straight for an upgraded turbo though, not the standard one with the kit, and you'll obviously need a turbo friendly cam and a custom tune to get you there. You WILL need the injectors IC and fuel pump like you stated. A BOV will be needed at boost levels that high, and a boost controller wouldn't hurt. You'll need a torque converter too, to match the cam and to get the ET.

 

I have been running 12 psi on stock internals since September with a non-intercooled Vortech so would assume you should be able to do the same, although I am probably out on the edge of the stock internals....

 

I just started seeing 150-160* IAT's @ WOT, but that's because it's been about 106-107* out. After a WOT run though, the IAT's won't drop, because everything is totally heat soaked. But before that.....

 

Hehe, I have a big *** truck running low XX's. 6000 lb shoebox. My buddy in Orlando is running about 75 hp less on his AV and ran a 13.6 @ 101. He was running a Radix @ 8 psi with no stall at the time.....