I dont know what to install first. Its between my shift kit and servo or zo6 cam. If I put the shift kit on I can get my edit faster.

 

I say shift kit ... it wil make a big difference in how the truck shifts.

 

How much do think a shift kit worth on the 1/4 mile.

 

Nothing really.

You'd maybe see some gain with TQ managment gone like I didn in my Vette but you'll likely see more gains and losses due to weather than you will from a shift kit.

Expect a 2-3mph increase in the 1/4 with a Z06 cam if you already have full exhaust mods including headers.

If you have the money though i would get one of the common truck style cams the guys use on here. the 212/218 or something like that. The Z06 has a really weak spot in the 3-5k rpm range and unless you have a converter you will hate it.