After some study I believe I know the answer but here it is. Does it matter which way the larger gear goes on to the cam shaft in reference to the two pins and the hole in the end. When I line up the timing marks the cam can go either of two locations 180 degrees apart. I need reassurance that there is no difference.
Either way, doesn't matter.
Thanks Ken, That is what I thought it inferred in the books.
Well it does, depending on what cam you are using, if using an early cam that has the timer pin hole go right through, you need to check that the cam is at No 4 TDC to fit the pin from the top or it could be 180 degrees out to the wiring.
Frank, that still doesn't make any difference which way the timing gear goes on. It only matters which way the timer rotor goes on.
Jerry, true, but in relation to the pin hole alignment and the timing marks on the gears the cam can still be 180 out if you don't check.
No, it does not matter, not even with an early cam.
Stephen, if you fit a cam with the timing marks lined up, the 1/2 way drilled pin hole will always be your #1 but if you flip the early cam 180 then #4 is TDC when you fit the timer roller if you don't rotate the crank back to #1, you have the wrong firing order.
As long as the timer roller is installed in the correct position in relation to the cam lobes the ignition timing will be correct despite timing gear orientation. If the ignition timing is 180 off it's because you installed the timer roller wrong not the timing gear.
Stephen, your missing the point in relation to the question, yes you are right but, it's a no brainer for several million T's, it can go together with cam either way, but we don't use the timing marks on the other side of the gears, but if confronted with the other millions, then you have to watch what you are doing as you line up the marks, you can't assume that the cam is correct for timing the roller like the later ones, affectively the cam can be 180degrees out and corrected by rotating the timer roller 180 degrees.
Ford installed the cam gear timing mark opposite the toe on the first lobe of any cam.
All you would have to do is bring number one up on compression and stop when the piston reaches TDC. Put the roller on the camshaft so that the roller is at the top left and put in the pin. It matters not how the gear is installed, just the roller.
A cam CANNOT be out 180 degrees. It is "180 degrees out" every revolution of the crankshaft. Don't believe it? Put the cam gear on with the marks aligned correctly, then turn the crankshaft one full turn. Wuddayagot? A cam shaft that is "180 degrees out". Turn the crankshaft another full turn and your right back where you started.