EFI Conversion?
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Joined: Oct 2015
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EFI Conversion?
Just picked up a fairly complete EFI 300 from a 91 F-150. I had originally though to use it as parts to replace a tired 240 in a 66 F250, but since it was complete and running though I'd at least look into using it as is.
Did a search here and see it would need a fuel pump and I assume some control module for the EFI. Anything else? Going for a low buck swap, so an aftermarket EFI controller probably wouldn't be in the cards for me.
Did a search here and see it would need a fuel pump and I assume some control module for the EFI. Anything else? Going for a low buck swap, so an aftermarket EFI controller probably wouldn't be in the cards for me.
Junior User
Joined: Oct 2015
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If you do the wiring yourself, it can be time consuming. Good wiring diagrams are a must. I have done some of this work and will mention that with the EEC-IV system there is one wire that can be confusing. The diagrams will show a pink wire with black stripe to the fuel pump. This wire is YELLOW at the ECM and is spliced to a pink/ black wire down stream (at the crash /fuel shut off switch IIRC). At least it was when I did 5.0 conversion in a 62 Falcon. The numbered pin diagram for the ECM connections is extremely valuable in these cases. Be patient and trace every wire out to verify which ones to retain or separate from the vehicle's main harness.
Elder User
Joined: Sep 2014
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From: like subarctic, brrr man!
Pfft, carbs...
EFI is a challenge for sure but not impossible. If I had what you had, I would go with a DIY like megasquirt or VEMS and get a harness for it. And then spend a year fiddling with it, giving up, bash head on it some more, give up again, go on a spiritual journey on a mountain, and install it and get it started.
Then onto tuning and more work!
Carb's now seem like an easier route :P
EFI is a challenge for sure but not impossible. If I had what you had, I would go with a DIY like megasquirt or VEMS and get a harness for it. And then spend a year fiddling with it, giving up, bash head on it some more, give up again, go on a spiritual journey on a mountain, and install it and get it started.
Then onto tuning and more work!
Carb's now seem like an easier route :P
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