EFI with stock FUEL sending unit questions - Ford Mustang Forum

LinkBack Thread Tools
post #1 of 4 (permalink) Old 10-12-2013 Thread Starter
pinkblob66's Avatar
Joined: Jul 2010
Location: Orlando
Posts: 62
EFI with stock FUEL sending unit questions

Okay. I have a 1966 mustang coupe. Right now I'm in the process of building up an engine for the beast. I have a 1991 Mustang motor with edelbrock RPM performer heads, probe forged pistons STD, x303 cam, Magnum procomp pushrods, 1.6 roller rockers, PC-3247 procomp throttle body and a Procomp Manifold PC24030.. among other little things.. I want to get this thing in the car and running ASAP... but I'm having a problem understanding how to get the fuel to the injectors.. SO, how/what do I need to install to get the fuel there. The little 289 had a manual fuel pump, so this is new territory for me considering I know I will need an electric pump.

I know I will probably need something like this kit, but I'm not sure if it's application will work for fuel injection.


Keep in mind I have a stock sending unit (new) for the original 66 set up. Any help regarding this topic would greatly be appreciated. If you have done something like this please tell me what/how you did it.

pinkblob66 is offline  
Sponsored Links
post #2 of 4 (permalink) Old 10-12-2013
MACH I Member
b1lk1's Avatar
Joined: Jul 2008
Location: Long way from home
Posts: 2,747
How are you wiring this car up? That will dictate what you need to fabricate in the way of fuel pumps.

1988 Mustang LX coupe will miss you greatly
traded for:
2004 Mazda 6s 5 door Sport w/5spd/3.0/RX8wheels/Kon/Eibach/and then some

b1lk1 is offline  
post #3 of 4 (permalink) Old 10-12-2013
PONY Member
alpha male 67's Avatar
Joined: Feb 2009
Location: Lafayette
Posts: 751
sounds like a very nice start on the build, just need a little more info here...
you are planning to going EFI right?
if thats the case you will ALOT more than just a fuel sending unit, Your old carburetor’s fuel system was a returnless system that ran at only about 5-6psi, the EFI system utilizes a return line and operates at a much higher psi. The fuel hose from your carb’s fuel system isn’t rated for the fuel pressure associated with the EFI fuel system, so it must be replaced.
here is great site i used in my swap (here) has everything you need and can take you step by step, be safe

67 Coupe
91 302 roller .030 / Comp Cams #XE266HR cam
Edelbrock RPM Heads / RPM Air Gap intake
Holley Street Avenger 670 carb
Crane Gold 1.6 rockers
"blood-sweat & beers" :smoke:

68 Coupe w/ 93 roller and T5 EFI
alpha male 67 is offline  
post #4 of 4 (permalink) Old 10-12-2013
GT Member
mccance's Avatar
Joined: Nov 2002
Location: atlantic
Posts: 1,366
what you need is one of these sending units from mustangs plus that has a return line provision if you want to run a stock style setup.

Mustangs Plus :: EFI & T-5 Conversions :: EFI Fuel Pumps & Sending Units :: 1965-68 RMP EFI Fuel Sending Unit

or this kit has basically everything to run your fuel lines.
Mustangs Plus :: EFI & T-5 Conversions :: EFI Fuel Pumps & Sending Units :: 1965-68 RMP EFI Fuel System Kit

65 mustang. supercharged 302 currie 9 inch, 5 speed.

67 mustang built for my daughter

89 convertible lx in progress

click on the house icon to see my garage page with build info.
mccance is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Ford Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a VALID email address for yourself, otherwise you will not receive the necessary confirmation email needed to confirm, validate and activate your new AFM member account.

Failure to provide a VALID email address, will result in the cancellation of your new AFM member account registration.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On

For the best viewing experience please update your browser to Google Chrome