got a retune from from tuner MECHE member on site . specs on in sig .how much rwhp you gays think i am making now on 12 psi pump gas (9.1 compresission) 16 deg timing on pump gas no meth . going to make some pulls on dyno in jan 2015 .want see how close results will be .thanks again to trick performance and tuner meche (garret)

 

I dont see anything about the heads or cam you have... but 600ish?

 

I'll guess 570-580

 

317 heads mildy ported ,228/232 comp turbo cam .my stock 6.0 cam only old set up with magnum 76mm made 500-510 on 8lbs .hope to see 625-650. i know its got lot more power than 500-510

 

Figure out where you are on the compressor map at 6000rpm and multiply the mass flow in lb/min by 10 and that will get you close.

Trap speed at a track and your weight will tell you much better what kind of power you are making than a dyno will.

 

600-650 I would guess. Darnie made about 600 on a 5.3 p&p heads tr220 cam and 12lbs. His truck is pretty wild for what it is so I would guess you would make a tad more.

 

My set up made 578/550 on 12psi on a dynocom. Not sure if that helps at all.

 

thanks to all that had input . hoping to see 650 i am basing my guess on a couple people that my old 60lb injectors will supply 600 rwhp and they ran out at 10psi before.that why upgraded to 80lb will post results .going make pulls with my 4l80 then going to put my new 4l80 e upgrade to six speed in

 

Is that the TCI valve body or complete tranny or does someone else make one now? That has to be a nice upgrade! I know this 6l80 is way nicer for a driver than my 4l60s or 4l80 ever was.

 

new tranny and converter.keeping my set up just in case it don't work