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

If you plan on reusing your old cam and
lifters, the lifters must be kept in order. As
each llfter is removed from the bottom of
its bore, I'm putting them In this special
holder to correspond to their original position
in the engine. Assuming you don't have
one of these holders, a couple of egg cartons
or a sheet of cardboard with 16 holes
punched in it will work flne. Be sure to mark
which end corresponds to the front of the
engine.
Worn and new lifters. Worn lifter is useless
as it is worn from its new convex spherical
shape to a concave shape. Because the
lifter-foot wear pattern matches cam-lobe
wear, a camshaft and its lifters would
quickly be destroyed If lifters are not
reinstalled in their same bores.
Badly pitted and worn lobes spells the end
of this camshaft. If reinstalled, it would
quickly lose its lobes and spread metal particles
throughout the newly rebuilt engine's
oiling system.
When trying to remove oil-gallery plugs,
you'll think they were put in to stay. A boxend
wrench slipped over an Allen wrench
should provide the additional torque
needed to loosen the plugs.
to as knocking or pinging. The cause can
be due to the use of lower octane-rated
fuel than the engine requires or excessively
high temperatures in the combustion
chamber for one reason or another.
If any of your bearing caps appear to be
sprung, they can be reused if your engine
is intended for normal street and highway
use. If you're going to use it for racing,
the loose caps should be replaced. The
block will then require line boring or
honing to true up the main-cap bearing
bores with those in the block. Special
bearings have to be used when this is
done.
As you're removing the main caps,
don't remove the bearings just yet. After
you have all the caps off, lift the crankshaft
straight out of the block and set it
beside the block. Place the bearings and
their caps alongside their corresponding
journals so you can see the inserts. By
doing this you'll be able to relate any
bearing problems to the crankshaft journal
each was fitted to. Record any potential
problems you may discover and the
corresponding journal so you will have
this information during your crankshaft
inspection and cleanup, and possible reconditioning.
Removing the Cam-Two things have to
be done before you can remove the cam.
First, and most obvious, is to remove the
thrust plate. Remove the 2 thrust-plate
retaining bolts, then the plate. Don't
attempt to remove the cam just yet.
You'll have to remove or raise the lifters
in their bores so the cam lobes and bearing
journals will clear them as it is moved
forward.
Varnish builds up on the lifters just
below the lifter bore. Mike the diameter
of a lifter at this point and you'll find
that its outside diameter is larger than the
inside diameter of its lifter bore, making
it difficult to impossible to remove up
through the bore.
The best way I've found to remove a
cam and its lifters is to remove the cam,
then to push the lifters out the bottom of
their bores:To do this, you'll have to
raise the lifters in their bores and keep
them there so you can remove the camshaft.
Keep is the key word. Put the engine
on its back or stand it up on its rear
face. Raise the lifters by turning the cam-
.shaft a full revolution. Slip the cam
sprocket back on to make it easier to turn
the cam. If you're working with a 4291
460, the camshaft lobe-lift isn't enough
to raise the lifters so the cam bearing
journals will clear the lifters. You'll have
to force the lifters up a little higher in
their bores. This would also be the case in
the event your 351C or 351M/400 cam
has worn lobes. Be careful not to damage
the lifters if you can reuse them.
To start the cam moving forward, pry
it with a screwdriver, bearing against the
backside of a cam lobe and one of the
bearing webs. Get ready to support the
camshaft as it clears the bearings, particularly
if you are doing this with the block
on its back. If you are intending to save
the cam bearings, be careful when doing
this job. A hard cam lobe can easily damage
a soft bearing if the cam is dropped.
Keep the Lifters in Order-With the cam
clear of the block, you can now easily remove
the lifters through the bottom of
their bores. However, before you start removing
them, make some arrangement to