i drive a 4.8l rcsb 99 silverado z71 and i want to go fast but i only run 10.7's in the 1/8th mile on 20 inch rims but i want to break 10's or atleast 10 flat on my rims
what shood i do next? i already got CAI and true duals

 

for starters...a custom tune any of the sponser to the right are great! Then throw some long tubes on. cam and stall, n20, forced induction how deep is that wallet is the question. how fast do you want to go? 6.0 swap maybe?

 

i dont think long tubes will fit with my transfer case in the way
900 bucks for starters,help me out around there for now and ill be good til i get more money

 

Through a turbo

 

i dont see how i can turbo it for only 900 bucks?

 

For 900 I would do the following.

Tune from blackbearperformance $200
Shift-kit and servos ~$150ish
Long Tubes and ORY $500

That is $50 under budget...

Next i would do a
CircleD Converter $650




Oh and don't do duals on a 4.8.....

 

They fit, they are made for these trucks! just about everyone on PT has lt's

 

ok thanx

 

Tune, shift kit, servO (you don't go into 4th at WOT anyway) yank or similiar converter. A little over $900 but that will easily get you there and then some.

 

I ran a 10.09 in my rcsb 4.8. all it had was cai, short headers and full exhaust. I too have 20" wheels but no transfer case I guess thats where i got you.

Go with what these guys said. Tune, shift kit and headers are the first everyone does.