MY 5.3 with stage 1 heads, headerback exhaust,biult tranny 2900 stall, 3.73' posi rear, k&n, and a magnuson blower made
A tad under
340 torque and 310 hp... at peak 4.8 psi non intercooled...
Now I want to order a intercooled procharger set up too see what my numbers would be like.
Also if I wanted to add a recommended cam for supercharging.

If you guys could answer these questions it would be great.
Nick

 

hopefully bigtex will chime in on the cam selection. there are plenty of them on the board also. why not a sts turbo?

 

My stock 5.3 with a flowmaster made 352 rwhp and 348 rwft-lbs. This was with the stock fuel injectors and no tuning which ran kind of rich with the f.m.u.

 

A stock 5.3 made those numbers with only a flowmaster??? I need to see the dyno chart.

 

It's possible,

With the STS kit at 5psi and a turbo cam I made 348rwhp (but a much broader power band that an ATI). The guy never said what kind of blower, or boost he was running so anything is possible.

 

Why do you have a FMU on your stock truck?

 

His truck isn't stock. He means that his truck stock WITH whatever FI kit he is running. Meaning, no heads, cam etc.

 

Ya, I think he meant that his procharger setup on a stock 5.3 with a flowmaster made those numbers. Thats very believable IMO. Those setups make 8-9psi right out of the box.

 

stock with the ati procharger.....one of the original questions was for the ati kit with intercooler, sorry guys, I should have been more specific.......the f.m.u. was part of the kit, this is an old setup, I don't have it anymore

 

That's a nice torque curve...