Well, I've done alot of Silverado testing over the past couple of years and i finally got some results from the new L33. My boss recently got a new demo and I had helped him pick the options for it a few months ago. He has an 05' K1500 version with extended cab and short box. The engine is the L33 with M30 trans and GT5/G80 rear. At this point the truck has less than a thousand miles on it. So far we've done a corsa catback, outlaw cold air intake, trailblazer converter, zippy kit, and zippy programming. We went to the track tonight in 82º weather and gave'r what she had. I still have some more room in the programming also I think. the best pass was a 15.42@88 (i'll check the mph tomorrow to make sure i'm correct on that). The best 60' was a 2.3xx because it kept leaving the line spinning. Track prep at this local track is terrible and the 275/70R17 Goodyear Silent Armor AT/S's don't stick for a damn. I think if we go to the track to the M10 event here in Michigan this fall I can get it into the 14's. We actually went there today to race the office managers hemi which is a 1500 extdended cab sport package model. That went a best of 15.8 n/a and 14.12 on the 100 shot. I smoked those times by bringing two much faster SS trucks. Either way i thought this was some vaild L33 info since there isn't much out there on them yet.

 

not bad for spinning off the line, what gear does it have??? I believe "three83" has a cc witha L33 and he went 15.2 in the quarter will similar mods but with a predator......

 

Those ar good times for a heavy truck. Must be one hell of a tune. Nice work.

 

it has the GT5/G80. 4.10 gear with gov-lock. i also forgot to mention it has a 160 thermostat. i plan to get the truck into the 14's with more tuning and better weather though. i'm still trying to talk him into a mild cam. i'm pretty impressed with this new L33.

 

I figured the L33 could kick the **** out of the QC hemi 4x4s.Zippy what cam spec did you have in mind for it? Zippy,what was the L33 lacking most for the tune?TQ removal?

 

Not bad. The 6.0 in a heavier hd still seems to be worthy opponet with a 87mph trap. Bone stock with 87oct.