Here's some text from John Mummert's Y Block Assembly errors.

Cam thrust. It appears that Ford used 2 different thickness thrust washers and plates on the cam. With the wrong combination there will be no end play in the cam. Ensure .004" movement during assembly.

I am concerned that I do not have enough cam end play.  Can anyone give me some advice on this subject?

 
On the camshaft attaching parts picture, its parts #6265 (cam thrust washer) and #6269 (cam thrust plate) that dictate the correct amount of camshaft end play.  The difference in measurements on these two parts will determine the exact amount of cam end play.  Be aware that the cam thrust washer is not keyed and has a chamfer on one side only.  The chamfer goes towards the rear or faces the camshaft.  The cam thrust washer is placed on the camshaft before installing the woodruff key in the camshaft snout.

Lorena, Texas (South of Waco)

Thank you.  If washer #6265 is installed backwards, wouldn't it make the cam end play less?  Could be my problem?

Installing the thrust washer with the chamfer facing forward can increase the camshaft end play assuming there is a radius at the base of the camshaft snout, not reduce it.  The reason for the chamfer on the thrust washer is so that the radius at the snout to cam front face can be compensated for.  Having no radius on the camshaft snout makes it more prone to breaking or snapping off.  Some aftermarket camshafts may not have that radius at the snout at which point it would technically not make a difference which way the thrust washer was installed.

Lorena, Texas (South of Waco)

I definitely have a problem here and I'm not sure what it is.   I removed the balancer, front cover, gears, timing chain and thrust plate with it's round washer.  The washer that fits into the thrust plate was installed correctly with the beveled edge toward to cam. I slotted the thrust plate, reinstalled it and torqued the bolts that hold it to the block. The rear freeze plug is installed correctly. I installed the timing gears and chain as in the shop manual.  I then installed the washers and fuel pump eccentric as in the picture.  Everything rotates freely until I torque down the cam bolt.  This puts a bind on the rotating assembly that I can feel and I have no detectable cam end play. I'm think I may have the following issue. This is from an Internet assembly article.

It appears that Ford used two different thrust washer thicknesses and cam plates. With the wrong combination there will be no camshaft endplay and failure is certain. Ensure at least 0.004-inch camplay endplay during assembly.

Where can I get these parts?  Any ideas?