You're seriously down on power if you can't spin those small tires.

Who tunes your truck?

 

^ I agree this could be the biggest issue, I know before my truck was tuned properly it was very slow to spool and didn't have nearly the top end power it ha now.

 

Nope. Never tried.

 

Usually it's Mike from NEP. But I replaced the ECU and had a tuner here do a half-assed tune after this build. I am in the process of tuning with Mike again.

 

That's good to hear. My current tune is definitely out of whack.

 

You will never get a good launch if you don't get that big turbo whistling from the start!

 

Would a 3600 stall help achieve that?

 

Probably, but tuning a converter for your setup is going to be tricky. You want it loose enough to allow enough air through the engine to start to spool it, but you want it to couple very hard early in the rpm band to not blow through based on where you want to shift.

 

I have to think this alone will make a huge difference. Have mike tune it and re run it. Change nothing else and see what happens.

 

Where are you located