i found 3 leaking injectors, and im going to replace them all considering they have 116k and who knows when the others will fail.

should i get the accel 21# or 23#, i am not going to change the injector constant, but ill tune it with an afpr, mods listed in sig

 

?

 

GTA,

Looking over your post and signature, I didn't see anything that mentioned whether you have a 305 or 350. That would make a little difference in the selection. I could guess that you have a 350 since you started by asking about 21 PPH injectors, but guessing can be risky. You should also be aware of the differences in injector ratings, and that Accel can rate their injector flows at a different pressure than GM did.

 

ooh, sorry about that,
its a 350, i know gm rates them at 3 bar or 43.5 pounds, does accell also rate them the same?

 

I'm not sure about Accel, but I know Ford uses a different test pressure for flow ratings.

 

ok im sure accell measures them at 3 bar, should i go with the 23's or the 21's with my mods and a 350?

thanks