hi guys i was just wondering what size fuel injectors you guys were running in your 383's. Cause i have had bryan from pcmforless tune my car. I just bought lt1 edit for my car but i cant seem to lean out my car any. when i put it to the floor my wide band wants to read 9.5 the best i could get it to lean out is 11.5. Do you think that my 42 lb injectors are to big.

 

normaly 42s u us with boost. thay may work with your big motor,

 

do you have an adjustable fuel pressure regulator?

 

I run 36lb in my 12.8:1 383 with no probs. With the right tune I dont see why 42's would be that much harder to tune.