What boost level can we safely run without having to change injectors or install LT4 pump? Im at 8psi and it's not enough for me.

RT

 

I thought around 550rwhp was about it?

 

I'm not sure what 8psi output would be in wheel power.

R

 

I saw 10.37 on 1 pull @ 442 hp 471 tq. and its on stock everything. That was when the blower was still relatively cool. He dialed back the timing just a hair after that pull.

 

I can tell ya i'm not impressed thus far with the power. Anyone know what pulley size I need to get 10psi Magnuson TVS 1900 currently I have an 84mm and they make an 81mm and a 78mm.

RT

 

What size engine? Stock crank pulley right?

With a 5.3 you need a 2.80" blower pulley for 10psi.
With a 6.0 you need a 2.55" blower pulley for 10psi.
With a 6.2 you need a 2.50" blower pulley for 10psi.

Mulitply by 25.4 to get the pulley in milimeters.

Not sure how small they make them, but a OD crank pulley would help you out a bit.

 

2014 5.3 DI stock crank pulley, headers, 87mm Throttle Body

 

If it doesn't feel that good maybe something in the tune. I would think it should run pretty good where it is. Take it to the track and see what it mph's. That will tell you something.

 

2nd this. I believe New era keeps their bolt on TT kit at 8 psi on a bone stock 5.3 truck w cats. It went 12.7 at 107

 

Seriously considering installing this L86 I have...

RT