How To Rebuild Your Ford V-8 351C-351M-400-429-460.pdf - Index of

tively. Because the bearing shells are the
same thickness, the 351C and 351M1400
bearings must be installed in the right
bearings bores. If you attempt to install
one in the wrong bore, it will fit loosely,
or be destroyed. The 4291460 bearing
journals all have a 2.1 24-inch diameter.
Chamfering the Bearings-Before installing
your cam bearings, it's a good idea to remove
the sharp edges from the inside
edges of new bearings. They can interfere
with the cam journals as you're trying to
slide the cam into place, making cam installation
more difficult than it needs to
be. The tool particularly suited for this
job is a bearingscraper. It's like a triangular
file with no teeth. If You don't I.Iave One
of these, use a pen knife.
To chamfer the bearing ID, hold your
knife or scraper 45" to the bearing surface
and hold the bearing so you can rotate
it while peeling a small shaving about
the size of four human hairs-if you can
picture the size of four hairs. The idea
here is to remove just enough so you
can't feel a burr when you drag your fingernail
across the edges of the bearings.
Get the Block and Bearings Ready-Put
your cylinder block on its back so you'll
have access for installing the bearing inserts.
Also, it's best to locate the block SO
you can easily sight down the center of
the bearing bores during the installation,
particularly if you have a bearing installer
that's not self-centering.
After your block is positioned, organize
the bearings in the same sequence they
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parable aftermarket sealers and oil additives
for lubricating the cam.
Each of the five 351 C and 351 M/400 bearings is different. They get smaller from the
front to the back. Bearing numbers and posltlons are printed on the box or on a separate
are be in. This save slip like this. Note size difference between the front and rear carii bearings.
time fumbling around. Also, fully understand
where the bearing-insert oil holes
are to be positioned in their bores so they
will coincide with the oil holes in the
block. Cam-bearing lubrication depends
on oil fed from the crankshaft main
bearings. If an oil hole is closed off due to
a wrongly positioned bearing insert, goodbye
bearing!
Bearing-insert oil holes are slotted to
accommodate some misalignment with
the block oil holes, so they don't have to
line up exactly, but this is no excuse to
get careless. Another thing to watch is
that the number-one bearing bore has two
oil holes. One feeds the cam journal from
the crankshaft and the other feeds the
distributor journal from the cam. So
Holes in cam bearings are there for a purthere
are two holes to line up in the num-
pose, to provide a passage from the oil gall-
New cam bearings have square edges and eries to the bearing journals. Front bearing
position' Because the 4291460 possibly a slight burr which makes install- insert has two holes, so be careful when
bearing inserts are the same, they have an ing a cam difficult. Before installing bear- lining up bearing for installation. Extra hole
extra oil hole which is not used in the ings, chamfer their edges with a penknife is for cam-journal-to-distributor-shaft oil
other four bores. or a bearing scraper as I'm doing here. gallery.