If i put the 6.0L lq4 in a reg cab silverado 2000 model with stock tires,i have 4:10 gears: and eaton posi already so how much and what mods will it take to get me running 8's in the 1/8? include exhaust and intake and anything else.

 

Well, I would say intake, LT headers, exhaust like corsa, magnaflow, or hooker not flowmaster, custom tune from Nelson, electric fans, and a stall converter should get you close. Is it 4wd?

 

What size stock tires?
Need more info.
Anyway. I have a 2000 Z-71 RCSB with a LQ4, a TR224 (not really, but close ) 3.73's LS1 fans and a 3000 stall, I went 8.72 in the 1/8 on 26" DR's. I still have some tuning issues though, so it should have been better. I have a bud with a 2wd LQ9 he runs a little better with 3.42's and I think stock tires, with a stock motor. The extra weight and height of teh 4wd really hurts, cause I would bet Im making more power than him, and I had a stall at the time.

 

With my LQ4, cam, heads, boltons, shot of gas, and 26" drag radials, I've been 7.50 with a 2.0 60ft(spinning). If you have a 2wd, you are just about going to have to have some sort of slick/drag radial to get it to semi-hook for you.