And my 4.8 has a manual tb wats the prosses oh changing the harness if the 5.3 is electronic ....or can i make the 5.3 use a mechanical tb and just take the electronic one off?

 

I think you'll be fine with your injectors. I'm running cam heads a stall headers e fans the tbss intake with the 87mm TB and my injectors are cool. But now that I think about it you got that side mount supercharger huh? You might need a bigger fuel pump and injector depending on your set up. What kind of set up are you thinking? And yeah I would invest in the msd wires and only run ngk tr6s spark plugs.

 

Don't really know bro. I've had an electronic TB not a cable driven??

 

Wat do mean what kind of set up? Prob end up with 9lbs of boost prob get rid of my ac and run a direct belt to the supercharger from the crank and the supercharger is in the truck in my 4.8 now so i already have a bigger pump and i believe injectors
But idk wat size

 

your coil packs are fine, as far as fuel and air might as well get the TBSS swap. its got injectors, intake and TB thats basically what im running minus the new TB it helped alot. im running my stock fuel pump still and its doing fine but any more mods ill be upgrading it as well.

 

Ok cool but your not gona do anything like a cam or heads juust slap on the supercharger plus maybe a couple of bolt ons?

 

Ill do cam lifters springs headers intake tb wires ...maybe injectors to play it safe a tune and supercharger...think thats everthing haha

 

Yeah for best advice tho ask the person who's gonna tune your truck. I almost bet you your 5 speed trannys gonna go out you tho their pretty weak

 

Its broken right now haha...thats going to the shop in a couple weeks for a full $1000 rebuild$good better gears and a a 400$ clutch

 

now when i look up ls6 springs and ls7 lifters it says that there application is for ls1 ls2 ls6 and ls7 ....so that make them all the same thing ...damn so much to learn bout these new engines haha...