Being a mechanic mostly what I do at work is pretty mundane, however my Boss knows I enjoy being left in the corner to get on with stuff so I quite often get the bigger jobs that come through the door. At the moment I have a 67 Mustang convertible that the owner wants modern electronic fuel injection fitted too. I did a similar conversion a couple years ago on a big block Impala and it changed the car from being an underivable POS to a real nice motor car.
Anyway I thought some of you may find it interesting. The system is made by FiTec and consists of a Throttle body/EFI unit that bolts too a standard four barrel manifold. It requires an external electric fuel pump, Air fuel ratio sensor and coolant temp sensor. Once fitted you can plug in the supplied hand held computer and enter the basic spec of the motor to determine the best pre loaded MAP for the system to run.
Starting with the ancillaries I require a fuel return, since the OE supply pipe is 5/16 and the new system requires 3/8 i repurpose the original pipe for the return but still require a fitting in the tank. The tank was drained and the sender removed, the tank was then drilled and a bulkhead fitting installed.
I had to drill the hole close enough to the sender hole for my fingers to reach.
A length of electrical cable was threaded through the fitting to make it easier to fit the sealing washer and nut to the other side. I was then able tighten the fitting using a flexible 3/8 ratchet and socket. Once secured the fitting requires a two foot length of hose attaching so that the fuel pump does not pick up aerated fuel form the return line.
Not an easy picture to take but it's in there! The original feed pipe was then re shaped to meet the new fitting.
One thing in my favour was that the original sender (aftermarket) already had a 3/8 diameter pick up pipe. I'm told big block cars used a 3/8 pick up while small blocks used 5/16. Either way I didn't have to change it.