460 help needed

[kustom]

hi my motorhome is based on the e 350 1986 460 carb. c6 trans hears were i need help we tryed to change the exhaust manifolds gaskits but ran in to
isuse no one had gaskits after taking manifold to ford was told my motor
has factory high flow heads [ like police or racing heads ] ford no longer has
gaskits but did find them online. i plan on pulling radiator to make it easyer to change them so hears what i need to known ??? i want to change water pump plus fuel pump are these going to be stock or special ? do to the heads i have thanks john

[subford]

The heads would have no bearing the fuel pump or the water pump.
Do you have an engine mounted fuel pump or just an electric fuel pump in the tank(s).

[halfwright]

The difference between the stock and the high flow exhaust is just that the exhaust ports are cut larger. Everything on the block would be stock. The intake manifold could be different. Are you going back with a stock exhaust manifold or headers?

[kustom]

hi subford thanks block mounted fuel pump so all other parts are stock ?
i see they sell a stock water pump and a high flow model plus alum or iron
what would you buy thanks

[kustom]

hi halfwright not sure on just cut bigger the stock gaskit dont come close
like night and day in size going back to stock as all headers i looked at
are for stock heads. the ford dealer said these were specail order heads
he told me he known a couple local race car guy who would pay big buck for those heads but thats all i known thanks

[Nick-B]

I would try it without gaskets on the exhaust manifolds.

As long as the manifolds are not badly warped, clean up all the surfaces, put a small bead of hi-temp red RTV around each port on the manifolds. Let sit for an hour or more to skin over and firm up slightly. Install manifolds but just barely snug up the bolts. Let it sit overnight, then torque down the bolts and hook up the pipes.

I read about this trick on 460FORD.com and it is what I did when I installed headers on my 460. No leaks!

[kustom]

# stamped on manifold is rfe-5-he-9631-aa anyone known any imfo
about this ???? gasket # d4vy-9448a ford part # thanks

[Bouchbri25]

Through my research If you go back with manifolds ford suggests no gasket. It if you do headers you probably do need them. For the 460 carb headers are hard to find though. I got Hedmen for an f350 cause searching by application usually only gives you the fuel injected heads (smaller ports)

[ga traveler]

At our dealership, we always took the exhaust manifolds to a machine shop and had the manifolds surfaced. They have a 3 foot wide table with a sandpaper belt on it. They press the manifold down on the sandpaper and it resurfaces the manifolds. This makes them even and no warping.

[kustom]

thanks for all the good imfo. someone had told me to drill the holes out
to next size as to not brake bolts from heat expansion ???? thoughts