340 valvetrain help

Fire-Medic,

Sharp Duster

Plan #1

#1 > Try to get some Part #'s off the Carburetor and Distributor.
#2 > Get that 'timing' down a bit, and see if the knocking persists.
#3 > Get the highest rated Octane Gas as possible in that Fuel Tank.
#4 > Pull the Spark Plugs, and inspect {color and gap}.
#5 > Compression Test {see what those cylinders are pumping}
#6 > What Temperature is the engine coolant reading at.

Note; The 'Mechanical Advance' Distributor may be the problem here.

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