High rpm for more hp and less torque?

[BigdaddyCtrain]

So i'm saving for efi live soon, and i want to tune the truck to its max potential, going to try and make some tunes myself. But my question is, is it bad to rev an a duramax, lb7 more specifically, up to 4k or even close to 5k rpm to gain more horse power with less torque? i want to save my stock bottom end and iv read that torque is the ultimate killer. So theoretically i want to raise the peak rpm between 4k and 5k for more horse power and less torque. I'm still learning and i want to know if their are any major disadvantages of high rpms and why i shouldn't do it?

 

[zf>allison]

Lots of info on this. 4k on a stocker is all you will want\need. I'm no tuner though I'm sure they can chime in about help with that

 

[SickLL7Crenshaw]

So i'm saving for efi live soon, and i want to tune the truck to its max potential, going to try and make some tunes myself. But my question is, is it bad to rev an a duramax, lb7 more specifically, up to 4k or even close to 5k rpm to gain more horse power with less torque? i want to save my stock bottom end and iv read that torque is the ultimate killer. So theoretically i want to raise the peak rpm between 4k and 5k for more horse power and less torque. I'm still learning and i want to know if their are any major disadvantages of high rpms and why i shouldn't do it?

If your still running the stock turbo leave the shift points alone.. You won't see much benefits from higher shift points and will cause higher egts and drive pressures.

 

[mike diesel]

You'll start floating valves at those rpms.

 

[BigdaddyCtrain]

So about 4k max is where im at with my stock parts? I'm planning on getting bigger injectors later this summer, i forgot to mention that. i was thinking either 60's or just go all out and go for 100's, any recommendations with that in mind?

 

[BigdaddyCtrain]

I'm more so just wanting to learn the limits of my truck and how i can achieve them

 

[mike diesel]

If you do some research you will find all the info you could ever want, rather than waiting for us to repeat it.

 

[BigdaddyCtrain]

Sorry, iv been doing some reading but it's quite a task to sift through all of the posts to get the right info, if you could direct me to some threads that would be great!

 

[Turbo Performance]

What turbo are you running or planning to run?

 

[BigdaddyCtrain]

borg warner s468 most likely planning on.

 

[Dozerboy]

Over 3600 and the stock turbo is running out of steam.

IMO your jumping the gun here unless you got a pile of $$$ to trow at this truck. Slow down and read new and old threads to start slowly building your knowledge. I have seen 2 of your threads in 5 mins and in one your taking about low rpms for mileage the next your talking about turning 4-5k and 100 over injectors. Yet no mention of what the purpose of the truck will be or your power goals.

 

[BigdaddyCtrain]

Over 3600 and the stock turbo is running out of steam.

IMO your jumping the gun here unless you got a pile of $$$ to trow at this truck. Slow down and read new and old threads to start slowly building your knowledge. I have seen 2 of your threads in 5 mins and in one your taking about low rpms for mileage the next your talking about turning 4-5k and 100 over injectors. Yet no mention of what the purpose of the truck will be or your power goals.

purpose of truck: daily driver

power goals: 500-600 hp range (for now)

I know im jumping the gun a bit (my bad), and im doing more reading as we speak, i just thought it wouldn't hurt to start a new thread. But by all means, if you dont feel like replying, dont! If you know of some good reads please share.