I was just having a thought... let me know what you guys think.

I've got a stock 5.3... plans are as follows:

Milled 243's from LS6 (sodium filled valves and the such) CR bump to about 10.15

216/220 Comp Cam

LT's with full exhaust

2600 - 3000 converter

Planning on spinning it to 6400-6600

Do I need to be thinking of injectors at this point? if so, should I be looking at 31's or Marine 8.1's (42 I think). The 42's would give me a bunch of head room for possibly a boost project in the future, I don't know if the 31's are enough, or if I even need to be worrying about swapping them when I do my build.

 

Pretty close to maxing them out. 32s would be the next step.

 

Those would be the 8.1L truck injectors right? I'd rather run a set of 32's at 65-70% than mine at 90-95% or whatever the hell it would be, point is, if I'm going to be that close, I'd rather move up.

 

I dont think youll need them i was running my stock 5.3 injectors on a 6L cammed for a while for the record the 5.3 and 6L are the same 1s, i dont think youl need them!

 

At a minimun, to be on the safe side the stock 8,1's is what I would do, just to keep the IDC's down. The stock ones could do it, but would be working hard..

 

That's kinda the way I felt, I didn't know how close I'd be to maxing them.

Thanks for the input guys

 

Fml does this mean ima need more injector? 222/226 cam on a 5.3 spinning it to about 6500..??? I'm assuming its a yes.. ill b getting the 32s then

 

mods in sig. spinning mine to 6850. my injectors are at 99% idc

 

i would put injectors in it
Mine is 95-100% duty cycle at high rpm with a 212/218

 

my bro is at 102% IDC with a 5.3, TSP 220 cam, headers and cai shifting at 6500