Today I finally dyno'd my truck. It's a 2012 Silverado ecsb, with an LY5 (LMG) and a 6l80 w/ 3.08 rear gear. Mods are full kn intake, 1 7/8in kooks longtubes (catless) and a full engine/trans street tune via HPtuners. Run conditions were 91*F, 29.31 in-HG, humidity 18% in Southern California. It put down 302rwhp, and 319rwtq. Honestly I'm very happy with the results.

Here's a video of the pull(s).

 

Nice where did they do the dyno at?

 

Yeah them LMGs run okay.

Little bit of blow-by happening there, though?

 

I'd guess at the catless exhaust and extra fuel, the cats might have burned it up.