94_camm

are 42lb injectors to big for my everyday 383 stroker?

rskrause

No, with the proper programming they should work fine.

Rich

94_camm

will it eat alot of gas? n will they be fine with no tune while iam breaking my motor in?

2QUIK6

If your current tune is for 22-24# injectors, I would not recommend running it with 42#ers at all until you can get the correct tune flashed in. Thats almost double the amount of fuel and you will quickly ffoul plugs and ruin the cats if you have them...maybe even wash down the cylinder walls.

94EvilZ28

Just like they said. I got the same project going in...You will need it programmed and depending on what youre running you will have to have the fuel psi set around 42psi...but the programmer will be able to hook you up...

94_camm

so wen iam breakin my motor in should i use stock injectors?and wen i do get it tuned will these still b to big for a daily driven car?

2QUIK6

With the proper tune, they will be fine for a daily driven car, most any high impedence injector will be fine for a daily driver with proper tune.
The PCM commands the injector to stay open a certain length of time, the pulsewidth commanded to the injector. The "tune" is what controls the injector pulsewidths. If you double the size of the injector, you do not need any more fuel at idle, so without changing the tune, the injector will stay open just as long as it did before with the smaller injectors, but the same length of time with double the injector size will mean almost double the amount of fuel.
The proper tune will cut the injector pulsewidth in half for the double sized injectors.

firebirdStud

I use them in my daily driver 383. No problems, and well worth the money!