Alright guys got some questions. I called comp cams and they recommmended a 222/224 .566/.568 on a 112lsa cam for my 5.3. My first question is what fuel system upgrades will I need for the setup with a 150 shot? I have the smaller injectors because I'm a 99 and what pump do you guys recommend I'm soon going to be installing a fuel cell so an out of tank pump is in mind. Now I'm just getting my feet wet in this so I need your thoughts on this?

 

walbro255 in tank pump should be plenty for now.

 

With a wet kit do I need injectors sence it takes fuel directly out of the crossover tube ?

 

You don't need bigger injectors for a wet kit. You'll have the same injector duty cycle from a motor pass to a nitrous pass. Although you do need bigger injectors since you have a 99'

 

I got away with a 150 shot on a 5.7 ls1 with the stock fuel pump just fine.

 

What size do you guys recommend? Could I use some 8.1 injectors?

 

8.1 will work fine.

 

Alright guys I really appreciate the help and advice

 

Any injector larger than stock should be just fine. Almost any fuel pump will be fine as well. I am a big fan for the aem320, but the walbro 255 should be just fine.

 

I am currently running a 150 shot with a tsp224r cam, 8.1 inj and stock pump. No issues after about 5 bottles.