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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

Old 01-05-2016, 05:16 PM
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megasquirt:injectors [SymTech Laboratories]

here is a simple calculator for minimum size......
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Old 01-05-2016, 05:45 PM
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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
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Old 01-06-2016, 03:47 AM
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Last edited by chris_seven; 01-06-2016 at 07:03 AM..
Old 01-06-2016, 06:55 AM
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also figure in type of fuel in the equation
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Old 01-06-2016, 03:42 PM
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How much power do you plan on? Mid-20's I'd think would be plenty.
Old 01-06-2016, 03:58 PM
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Quote:
Originally Posted by xbmwguy View Post
also figure in type of fuel in the equation
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.

Old 01-06-2016, 11:21 PM
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