Everything about the truck is built for nitrous. Big ring gaps, cam spec'd specifically for nitrous, really tight converter...it's built to pick up a bunch on nitrous, not to run great on motor...if you're going to dismiss any of mine or my friends work, why not make fun of the fact that I only ran 13.40 with a 6.0...I'm not here to impress anyone, just to have fun
Personally, I was wondering why the NA time was so slow with the mods you had until you mentioned the cam specced for nitrous. I really didn't pay attention to the cam specs.
1969 Chevy RCLB C10 350/TH400 SOLD
2007 Chevy RCSB 4.8 4x4 LS SOLD
2008 Chevy RCSB 5.3 4x4 LT SOLD
2010 Chevy CCSB 6.2 4x4 LT SOLD
2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
2013 FORD CCSB F350 6.7 Powerstroke 4x4