Well I finally took the Silverbirch to the HRP and ran a constant 15.5 at 91 mph with the 20" Factory Silverado wheels. I am very pleased with the times considering the mods i have and also for running it in humid 90 degree weather, shooting towards some low 15's or maybe a really high 14 with cold weather and 17" wheels.

 

good times, a friend hit 15.38 on his 07 NBS crew cab with airaid cai, cut out exhaust, TB spacer, and an edge evolution tuner. Its prob the 243 heads... keep those times goin down!!!

 

not bad for the damn heat we got but ya u will get a good 2-3 tenths with some 40 degree cold weather and another 4 tenths with some 17s so u might pull some mid 14s, good luck

 

Good times for the CC for sure. My best on 32" tires was 15.03 cammed.

 

I felt my truck running strong all night long a big thanks to charlie wheatley for the good tuning

 

get rid of the 20"!! lol... nice times for the weather...
i got a baby cam for sale that will definately wake it up!

 

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