5.3 with out of the box Radix. 370 rwhp and 390 rwtq. Baseline was 251 rwhp and 27X rwtq.

 

ATI D1 10 psi- all stock 5.3 with just shorties(junk) and a cat back. 380 rwhp. That was before the better intercooler and e-fans. The ATI 2 core intercooler is junk and was HOTT after 1 pull. I plan on seeing 400 next time with no other changes. Plus my engine wasnt even completely broken in yet, just recently turned 5000 miles.

 

402rwhp/ 450rwtq @9psi Using Dynojet
GMC 2500 4x4 6.0 Procharger w/custom tune
Everything else stock.


That's WOT only, driveability, part throttle still not perfect yet.... more tuning coming.

 

Its a 5.3 bored 30 , ross pistons, comp cam,mild head work,57# inj,pacesetter headers 3" mandrel exh with X and magnaflows. Looks like Im gonna sell the blower kit with after cooller and complete exhaust. Gotta try one them turbos coventional not sts.I'll post particulars later.

 

Boost? Pulley size?

 

Is your baseline completely stock, or with the TOG's and cat back? I was thinking these were more like 240-ish stock, but then again I am 4wd.

 

372rwhp and 389ft/lbs with 6psi on stock pulley and catback exhuast only. Now it has 9psi and I am hoping for over 400rwhp