Chosing injector size
 

So I was on the phone with my tuner and the last of my things will be comming in the mail shortly, I have my fast 92, 92mm tb, 98mm lid, 1 7\8 long tubes 3in x pipe and this weekend will be putting in my cam, bolting on my heads and then needing a tune he told me to buy a set of LS3 fuel injectors that I see are 42lb injectors and in order to use them I have to buy some type of adapter to use them with the price of the injectors and thing I have to buy to make them work im looking at the same price of a new 48lb injectors now my question would be is 48lb injectors too big to use on my current setup? and if I do buy the 48's could he just turn down the duty cycle so I could keep them for use when I upgrade my motor further?

I would run gtp injectors. You can get 8 of them for around $100. They are 36# that flow at around 40# at our fuel pressure. That is what I run with the setup in my sig.

Who did you decide to go with for tuning if I may ask?

yes he should be able to dumb down the injector.

I run the GTPs too. They looks just like the stock ones but different color. I have some if you need them as well.

Looks like im going to go a different route, talking with the tuner that I am having do that car I am going to make a switch to e85 and he has recommended 60lb injectors

One thing to keep in mind is not to go to big. Generally the bigger u go the tougher to tune they can be. A 42 pound at 58 psi will be plenty for u

Even for e85?

No e85 you will need to run a bigger injector. Listen to your tuner with using the 60lbs, sounds like he knows what hes talking about. If you need any let me know

60lbs on a stock head stock cam car with E85????

I think he said he was putting in a cam this weekend at the top of this thread. Im not sure which cam though. :drive:

First post on the bottom says he's still deciding.

I'm looking at running flex fuel on a stock head/cam LS1. So, the 42#ers are GTG?

I ran rejetted stockers (48ish) from FIC for a bunch of years and was super pleased with them.

Mine were a tad too small. Running 50lbers now.