I'm going to buy a set of the Ford injectors from Summit but I had a quick questions I couldn't find an answer to by searching.

Factory GM LB9 injectors are 19# @ 43.5 psi

Ford injectors 19# are rated @ 39psi

I'd like to get a larger injector than what I need right now because on plan on aftermarket heads, cam, TPI base, etc soon so I will need more fuel when I install those parts.

Do you think I should get the Ford 19# injectors and when I upgrade increase the psi or should I get the 24# for injectors and run low psi now then their rated 39psi when I do the mods?

What do you guys think? I don't want to have to buy larger injectors again and I don't want to over pressure them either to make them work. On the other hand though I don't want my current setup, which does have some mods, to run too rich right now.

I'm thinking the 19# running low pressure for now then just upping the pressure and using a custom chip later, does that sound right?

P.S. I plan on doing a custom PROM but not until I do my next round of mods because I don't have the equipment for it right now.

 

You need to learn how to do the chip burning first. It's much easier to start learning with a stock engine, rather then trying to figure out what your doing with an engine that already has changes done to it. With a stocker if you miss the tune or make a mistake you can pop the stock chip back in and at least drive the car while you figure things out. Goes with learning to walk before trying to run.