What is too much overkill for a rich fuel mixture for the injectors cc's/lbs sizes to compensate for the motor having more compression, bigger cams, etc to keep away from leaning out the air/fuel mixture and causing detonation?
LD9- 25lbs, 9.5-1CR 198/187 .354/.346" lift
LD2- 28lbs, 9.5-1CR, 200 .375" lift
LG0- 32lbs, 10-1 CR, 212 .41" lift

How much change in cc's/lbs of injectors changes the air/fuel ratio?..... 14.7-1 is the Stoichiometric air/ fuel mixture.

How much can you lower your fuel pressure before you run into idleing problems and also increasing it to where your pump wont burn out?

370cc injectors be fine for my motor build?..........10.5-1 CR, LD2 cams, LD9 head ports opened up.

Forgot to mention there are no emissions testing here.

You don't just put bigger injectors in to richen it up in general and be done with it..

You need to change the injector constant (so the injectors are open just long enough to expel the same amount of fuel you were getting with the smaller injectors) and then you change the target AFR under PE at whatever RPM to how rich you want it to be, and then datalog and edit the tune based on your actual AFR percent errors to correct the tune so your car experiences the proper AFR.


2001 Olds Alero (LD9)
650 whp / 543 ft-lb
@turboalero

The 370cc injectors should be ok then for my motor build ?