All,

This is related to my last post, but in the interests of helping those who, like me, are mystified as to why Ford would put 2 sets of timing marks on this engine, I've decided to make it distinct.

Here are my observations:

Timing Marks

There are 2 sets of timing marks:

One is a square piece missing from the crankshaft pulley. It's about a 3/8" long and about 1/4" deep (measuring from the edge of the pulley towards the center).

The other is a groove that runs perpendicular to the pulley and it's very hard to see.

Timing Scales

One scale is a piece of metal bolted to the engine to the LEFT of the pulley (as observed from standing in FRONT of the pulley - at about 11 o'clock relative to the pulley). It is in very close proximity to the pulley.

The other scale is on the timing gear cover to the RIGHT of the pulley (at about 1 o'clock relative to the pulley). There are 2 sets of numbers corresponding to the marks in this location - perhaps to aid in the viewing of the marks from 2 different perpectives

SO - Which mark and which scale should be used? I've searched through the archives and found posts that indicate the use of one or the other - leaving me, and countless others confused. Both the Haynes and Chilton manuals speak of these marks in generalized terms and fail to clear up the confusion.

Any Ford Techs out there want to clear this up?

Thanks!

Scott

 

Scott
The smaller timing mark is all you need to look at when checking the timing on your 300 . Unless the timing has been disturbed the 300 will usually run a long time and still remain timed properly . I honestly cant recall why the other marks are there ?

 

 

There should be a metal tab bolted to the timing gear cover. There are the degrees stamped on there and generally I set most 300 sixes at 10 degrees initial timing.

 

All,

I timed the engine to the TIMING SCALE to the left (at 10:00 to the pulley) and used the smaller mark on the pulley as the TIMING MARK.

Thanks for your help.

Scott