Can the stock fuel pump supply fuel to 32lb injectors at higher rpm's? and for how long?

 

If the car is just running bolt ons and the pump is in good condition, yes. It actually may be easier for the fuel pump to work with the higher flowing injectors because it will take less work for the pump to push the fuel through the 32lb injectors.

Basically, the higher the pressure, the lower the flow rate of the fuel pump, so if the injectors can supply the same amount of fuel at a lower pressure then the threshold where the pump can't supply fuel fast enough should be a little bit higher.

Of course, that's just theory at work though. It might work a little differently in real-world applications, but I think that if anything, the injectors should work for the better.

 

Good logic with bigger size taking less work, but that isnt the case. The FPR regulates the pressure inside the fuel rails, which is where the injectors draw from. The rails themselves are more or less independant of the fuel pump, so long as they're full. The pump just increases/decreases rail pressure, depending on

1: It's pumping ability
2: The FPR's ability to regulate said pressure
3: The FPR's setting if it's adjustable

In any case, X fuel is X fuel, and how big your injectors are doesn't make a difference if your pump can't pump the volume, and vice versa.

 

I get it.

But if you're reaching the limit, the bigger injectors would help, wouldn't they?

If the fuel pump reaches it's limit then the pressure will go down, but the bigger injectors should be able to supply more fuel at that pressure given their higher fuel rates. I realize that dropping pressure isn't a good thing, but I would consider 32 lb. injectors dumping fuel at 100% dc better than the 24s at 100% given the same pressure, even if it does fall due to the pump not being able to hold it's own. Of course that brings up the point of whether the engine would notice the pressure going down at wot when it's ignoring o2s anyway and whether it would make attempts to correct by adjusting the injectors...

My idea holds up in theory but I don't know if the computer can make said changes on the fly...

 

With my new cam and heads, will the stocker pump work for a few weeks of driving or should I worry?

 

It should work... I'd be a little cautious about wot though, at the very least take a few runs at 3/4 throttle to see if your engine starts cutting out before you do any type of wot stuff.

For short periods a lean condition isn't that bad but if you let it go (such as keeping the pedal to the floor) it could be very damaging...

If it's too lean, you can get pre-ignition, and elevated temps inside the cylinder. If it gets too hot the oxygen will start looking for something else to munch on, such as your pistons. So if it acts wierd, let off the gas and be nice to it.