The ignition timing for a 1972 Chevy 350 engine is 6 degrees Before Top Dead Center (BTDC). This means that the spark plug should fire 6 degrees before the piston reaches the top of its compression stroke.
Idle Speed
The idle speed for a 1972 Chevy 350 engine is 600 RPM (revolutions per minute). This means that the engine should be running at 600 RPM when the transmission is in neutral and the parking brake is on.
Note:
These specifications are for a stock 1972 Chevy 350 engine. If your engine has been modified, the ignition timing and idle speed may need to be adjusted accordingly.
