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Technical discussions specific to 1964-1967, 1968-1970, and 1971-1973 Classic Mustang. Discuss all tech related to in-line six cylinder and V8 powered Vintage Mustangs here.

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Unread 10-12-2013   #1 (permalink)
pinkblob66 is offline Apprentice


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Default 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.

http://www.summitracing.com/parts/cmb-03-0064/overview/

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.
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Unread 10-12-2013   #2 (permalink)
b1lk1 is offline GT Member


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How are you wiring this car up? That will dictate what you need to fabricate in the way of fuel pumps.
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88 LX 5.0 Notch - MAF conversion/B303/Heavily worked GT40's/1.72's/HD FRP lifters/Edlebrock Performer/BBK 70MM TB+BBK EGR spacer/BBK CAI/24lbers/70MM Ford MAF/BBK Ceramic 1 5/8 LT's+BBK catted X+blowmasters/3.55's

Numbers to come when I get it on the road.....
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Unread 10-12-2013   #3 (permalink)
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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
Chris
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67 Coupe
91 302 roller .030 / Comp Cams #XE266HR cam
Edelbrock RPM Heads / RPM Air Gap intake
Holley Street Avenger 670 carb
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"blood-sweat & beers" :smoke:

68 Coupe w/ 93 roller and T5 EFI
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Unread 10-12-2013   #4 (permalink)
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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
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