6, to 8 degrees advanced, or BTDC, will be about all you will be able to run, on pump gas.
The timing marks are on a tab adjacent to the harmonic balancer.
1.8.4.3.6.5.7.2
a 1973 Chevy truck has HEI Answer And if it does have points, say not the original engine, its .018-.019 will do.
8 degress before TDC
6 degrees advanced, or BTDC.
No need to if the distributor was not moved.
10 degrees with a stock cam
8*btdc manual 12*btdc auto
The ignition timing for a 1973 AMC 360 engine is typically set at 4 to 8 degrees before top dead center (BTDC) at idle, with the engine running at approximately 600-800 RPM. However, it's important to consult the specific service manual for your vehicle, as timing may vary based on factors like emissions equipment and any modifications made to the engine. Additionally, ensure to check the timing with a timing light for accurate adjustments.
the gap on the distributor points is .016, the timing is advanced 4 degrees and the spark plug gap is .030
switch should be on the bottom of the steering column ,probably have to drop the two bolts on console to get to it
Chevy in 1977 changed the rear main oil seal to a one piece seal. the older crankshaft wont work.