what injector size / 79 3.0 big port EFI
 

I am in the process of starting a EFI project on my 79 3.0L big port.

Anyone have insight to what injector size is a good starting point?

31LB?
31lb/hr (330cc/min) Magneti Marelli (Pico) - Fox Injection

46LB?
46 lb/hr (483cc/min) Magneti Marelli (Pico) - Fox Injection

megasquirt:injectors [SymTech Laboratories]

here is a simple calculator for minimum size......

Yes just plug in the numbers on an injector selection calculator like the one above, or Marren has good one also..

https://www.injector.com/injector_selection_guide.html

also figure in type of fuel in the equation ;)

How much power do you plan on? Mid-20's I'd think would be plenty.

Do you mean Methanol of other fuels with different energy ratings to normal gas?

I don't believe Octane Rating will change the energy produced although it may reduce compression and hence the horsepower developed which will be taken into account by all of the basic calculations.