so i was driving all conservative and this silverado starts racing... i was definetly pulling on him in my 4.8L and we came to a stop... he told me that i better have a 8.1L to keep up with him and blah blah blah.... i was wondering what they run stock... it wasnt that bad.. but i could of beat it.. bet that

 

Mine went 16.20 stock but torque management is very aggressive on the 8.1l. General it would fluctuate 1sec because of this.

 

16.7 here stock, last time out was 14.7 with mods in sig with no dyno tune or street tune for cam yet.