'36 221 - rebuildable??

[GB SISSON]

I your photo of the new aluminum cam gear it looks like perhaps you are running it with a used crank gear. This is what I did and am not too happy with the noise created by the combination. It was a very loud whirring noise at initial start up that lasted about ten minutes and I was much happier when as became a higher pitched whine. I was told on this forum that it comes from a worn steel crank gear slowly imprinting it's wear into the softer cam gear. I was told that the two gears will slowly 'find each other', but may be at around 6000 miles before it's truly quiet. At this point at maybe 2000 miles, it's the only part of my build I would have done differently. I have been tempted to research if there is an alternative fiber type gear that is neither a 75 yr old ford product or an inferior new 'overseas?' gear. If I'm correct about your new and old gears I would suggest addressing this while it's easily accessable.