I dont mean to hijack your thread nick but, badz... i have the 99 4.8 also and i was wondering if i should put in a supercharger or an sts turbocharger or N/A cam? I would like some power down low get it off the line better. I dont think ill be getting a different truck anytime soon or want to do an engine swap at the moment or nitrous. I would just like to know which of those would be the best? Thanks!

Mark

 

That sounds like the best idea to me.

 

you want off the line??????????hole shots?????
get you a 3000 or higher stall
lots of fun

 

Nitrous Express GM EFI kit. 150 Shot capable, around $600. With a 150 pill low 13s are to be had from the 4.8. Remember, just because it's a small motor doesn't mean it can't make power, it's just a little bit harder. But as you should know all Gen III motors (4.8,5.3,6.0) are incredibly strong and can take abuse. As for the trans, well.................
Philip S.

 

A good stall will help, but a Radix will add a ton down low. Having both will make you poop your pants. Because of the smaller displacement, I went with a procharger, and 4.10's ( and at the time was a 5 speed so I could launch at 4000 on slicks ) to help it shine in the higher rpm ranges that smaller engines need to be in to make lots of power. This is also why I decided to build a 6.0, though. It makes a ton of torque down low and then when it really starts to spin and make boost it flys. The best of both worlds. I can't wait for the engine to be broken in and tuned right. Just accelerating at 25% throttle pulls WAY harder than flooring the 4.8.

 

150 shot of Nitrous, eaton posi, and slicks will make for some good bottom end power too.

 

oh man a 4.8 can pull alot of horses if you know what your doing,of course its smaller than a 6.0 so obviously its going to be slower stock, but with the right combo the 4.8 can haul ***. i have a 4.8 and i got it to move

 

i still say spray it with atleast 125hp that is what pills i have and i hope my 5.3 will hold, i take that back i hope the 60e will hold

 

Man i remmeber my 4.8L didnt even hold a 75 shot of NOS it was either bad connected or since i had no window switch i guess it pretty much fired everything i remmeber my first race with it ! i didnt drive it since i wanted to get it on film i remmeber i raced a Lightning and off the line was good at about 30-45mph we hit the juice and BAH knocking everywere,backfiring everthing went wrong id say Bolt Ons,Force Induction, or 6.0 Swap

 

i got 3.42s as well. it's funny when i floor it in a straight line it dogs off the line, then the tires break loose at like 20mph when the RPMs rack up.