Where are timing marks on 1965 buick sky lark?

Intake: To locate the timing mark on the intake valve, remove the distributor cap and turn the engine till the rotor points towards the number one spark plug wire tower. At this position the intake timing tab should align with the TDC pointer (number 0 on the timing table) on the harmonic balancer.

Timing Tab Markings

Intake: T on the left 8 BTDC on the right

TDC: O on the left Top Dead Center on the right

Exhaust: E on the left 8 ATDC on the right

TDC Indicator

The timing indicator on the balancer consists of degree marks with 0 degrees at the 12 o’clock position, and it runs clockwise to 180 degrees at the six o’clock position as seen in the image.