hey guys, i need a little insight on my truck.

I have run a best of 8.30 at 86mph with a 2.03 60ft in my crew cab. On that run my shift points were set at 5000 rpms, really low because my 44lb injectors are at 122% duty cycle anything above this point, and my maf is maxed out above this RPM aswell, i know i need 60's and either a better maf or SD tuned. Im running the stock truck intake and stock throttle body, and i want to switch to a 4" exhaust set up, i know its choking. Truck made 460rwhp and 490wrtq at 5000 rpms on dyno on 275/55/20's with 3200 circle d converter. I ran out of money for awhile, thats why i left it the way it was. Along with trying slicks, what mods would you do to run 11's. Thanks for your help, mods in sig. ran a 325/50/15 bfg drag radial on that 8.30 run spinning through first.

 

Reads like you have all your problems already worked out. Injectors, SD Tune and Slicks will get you down there.

 

Again injectors, slicks, tune, and you should be close. If you want some insurance that you will get there. Add a NNBS/TBSS intake manifold with 90mm TB and go a little bigger on the exhaust side.

 

thanks guys, i just picked up an 07 4.8 for another project of mine, its just not here yet, from the pics i cant tell if the 4.8 also got the good intake and bigger throttle body like the 5.3s did, if so ill have that intake and throttle body to use.