Does anybody know what the factory lb injectors that come on a 95 f150 5.0 and has anybody ever but larger injectors on.

 

I believe the factory injectors are 19 lbs/hr. Changing injectors would require you to either change your mass-air calibration (if you have mass air) or have a program (chip) change if you have speed density. In any event an adjustable fuel pressure regulator would also be beneficial to fine tune the truck.

 

Larger injectors by themselves add NO POWER WHATSOEVER. All injectors do is provide sufficient fuel for the air the engine is ingesting. Unless you find a way to make it ingest more air, the larger injectors will add only drivability problems. If you add better heads, a bigger cam, a better intake manifold and T/B, etc. You may get to the point of needing more fuel.

The stock 19# units will support about 245 HP at an 80% duty cycle; push the duty cycle to 90% and they'll support about 275 HP.

 

I was not implying that adding injectors by themselves was a good idea, just answering what was needed to make them work if you were to need them. My mustang currently has the stock 19's and is making 296 at the wheels, not saying it's the optimal setup, but it has working this way for 50k without issues. I too believe that people are under the assumption that adding additional fuel to a stock motor will make more power, which is not the case at all.