Installed the 58f jet in the carb. Pretty sure it made the noise worse.
Pulled plugs and appears that the autolite 46 plug is too hot.
With the discoloration band near the base of the plug.

Might try a colder plug and see what happens..

Could be a lean condition raising cylinder temps.

Looks like I might want to order some carb jets too..


Not sure if that's the source of my noise though...

Distributor has too much end play when installed.. doubt that's my problem either, but could be.