On a 1994 Chevy 350 V8 when the two timing marks on Cam and Crankshaft sprockets are lined up is that compression stroke And position of distributor number 1?

Yes, when the timing marks on the camshaft and crankshaft sprockets of a 1994 Chevy 350 V8 are lined up, it indicates the engine is at Top Dead Center (TDC) of the compression stroke for the number one cylinder. This alignment is crucial for ensuring proper ignition timing and engine performance.

In this position, the piston in cylinder number one is at its highest point in the cylinder, and the valves are closed, compressing the air-fuel mixture in preparation for the ignition process. The distributor, which is responsible for delivering electrical sparks to the spark plugs in the correct firing order, is also positioned with its rotor pointing towards the number one spark plug wire terminal at this point.

By aligning the timing marks and setting the distributor correctly, you can ensure that the ignition spark occurs at the precise moment when the piston is at TDC, optimizing engine performance and preventing potential issues such as engine knocking or misfires.