ProjectSportsRoof – Vapor Lock or Not – Part III Fuel Pressure Test

Welcome back to #ProjectSportsRoof – my 351C powered 73 Mustang Sports Roof!

I’m pressing on with tracking down the cause of the frequent stalling of the bored .040 351C.

I suspected vapor lock, but with the fuel line insulated against the heat of the manifold and block, I didn’t get the ‘boiling’ sound, that might not be the issue.   But I couldn’t keep it running in idle.  So the fuel press test was next.  Here’s the video:

The fuel pump feeding the juice to the carb is a generic stock not sure of the specs.  Here is what I’m going to replace it.  Oh and it is tough to find anything for 351 Cleveland on the local market.  Even on-line, I was looking at out stock everywhere and ship dates of Oct 2020!  Thanks Pandemic!!!

So I found this:

Procomp Electronics High-Volume Mechanical Fuel Pumps PCE146-1014

Fuel Pump, Mechanical, Chrome, 115 gph, 6.5 psi, 1/4 in. NPT,

Flow Rate: 115 gph/435 lph

Inlet Size: 1/4 in. NPT

Inlet Quantity: One

Inlet Attachment: Female threads

Outlet Size: 1/4 in. NPT

Procomp Electronics high-volume mechanical fuel pumps are designed to work with stock or mildly
modified engines. They deliver free-flow outputs of 115 gph–that’s twice what a normal pump
typically delivers! These pumps are plated with a bright finish for good looks and corrosion
resistance. The lower housings can be rotated through 360 degrees to make fitting into tight
places a snap, and they have large orifices for high flow rates. Procomp Electronics high volume
mechanical fuel pumps are not compatible with methanol or alcohol fuels, and should not be used
with fuel injection systems. Order the model recommended for your specific vehicle and engine size.

Drop your thoughts in a comment!!

Thanks for checking!!

Tim