1978 351m Mechanical Fuel Pump Replacement.
Mechanical Fuel Pump Replacement FORD 351m 400
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351m, Ford, Fuel, Mechanical, Pump, Replacement
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Sorry but the 78 Ford pickups had round headlights.
Dude it was a hell of a chore but I got it .
I wonder if it will be that easy for my 81 ford bronco but ya showed me a
good way to start . Awesome vid thanks.
Yea that dam pump was hell I should of invested in a swivel joint earlier
Yeah, 15yrs is not good for a vehicle.
Yes.
Thanks. Good Point..Eng. came out of a 73″ mercury. Are the 73’s in a low
compression era? if so, what might I do to rectify that, if it is an issue
or not?
Mistakes are made to often it seems. Thanks for watching.
Yes it is a straight swap from a 351M to the 400. Some of the accessories
and probably the exhaust manifolds are slightly different because of the
year difference but everything else is straight forward. The distributor
and everything from the 351m will plug into the 400. The 400 also probably
came out of a car so the the oil pan will be backwards so you will want to
use the one off the 351M along with the oil pickup.
thanks for the tip about the #2 FormAGasket. I thinks I’ll get some tonight.
I don’t know the compression. The lower the compression the cheaper the gas
you can use, although in 73 they were still rated for leaded gasoline. It
is my understanding that the cylinder heads are a direct swap as well. This
can effect comp ratio. I know there are casting #s on everything and online
you can see exactly what you have with the two motors. I had a 78 bronco w
400 and this 78 f150 with 351M . The 400 was a HUGE power difference. I
pulled this 351M out of a Ford LTD 75-76 (Free)
Hopefully you find a use for it. Thanks for watching.
That’s an odd swap. Most people stay in the same model like a 360 or 390
(assuming it came with the 352 to start). I like the 351m/400 engine there
just isn’t a huge following for them. If I recall the 460 uses the same
transmission bolt pattern so they are fairly easy swap. You probably have
the C6 automatic behind it?
Just fired up my 79. First issue was gas poring out the back of my
edelbrock carb. Fixed that to find my pump shooting gas on the exhaust
manifold. Now that I’ve run a decent amount of gas through the system I
think I plugged a filter I installed at the gas tank. Man letting a truck
sit for 15 years is a bad thing. LOL
I had a huge tube of tat #2 gasket crap, but I threw it away lol. It was
the crappiest stuff I have ever used, my dad used to be a automotive
mechanic and he said he never once saw that crap work, fluids would push it
right out of the way and leak instantly.
nice job! im looking at a 78 ford fleetside shortbed right now that has no
motor. if i can get it for a few bucks,ill do a dependability restoration
,and use it as my work truck.
he wasnt a very good mechanic then. It never failed for me. You have to
have somekind of sealant on these types of gaskets. Glad I did not take my
repairs to him
Have a 1980 F150 4×4 w/ 351M. Have a 1973 400 w/ 60,000 miles on eng.
stand. needs valve job. Is it prettymuch a straight swap or am I going to
run into issues? My understanding is I put new distributor in for
electronic ignition and good to go. Prob. new oil pump also. will
everything hook up ok?
So the pump are goes under the cam lobe?
You kind of confused me on some stuff you said, your glad you never took
your repairs to who? I’ve never used gasket sealant on the fuel pump on my
truck and it’s never leaked. Honda Bond 4 is the good stuff, I once spent
20 minutes trying to get that #2 crap off of me, horrible stuff to use
especially on intake manifold coolant ports or stuff like that.
So your 73 400 needs a valve job? You will need to put hardened valves in
so you can run unleaded gasoline efficiently. The lead helped to cool the
valves and without using lead (or lead substitute) you can actually suck a
valve up into the head. Or again look into swapping the heads from your
351m that is already set up for unleaded.
With gas prices the way they are people seem to be giving these old truck
away for a song.
Smashing job 🙂 Yep you have to watch the suppliers like a hawk otherwise
they make mistakes.