What should the timing be set at on a 1977 350 Chevrolet c10 truck engine?

The timing for a 1977 350 Chevrolet C10 truck engine isn't a single number. It depends on several factors, including the specific carburetor, camshaft, and distributor used. There is no single correct answer.

To find the correct timing, you must consult your owner's manual or a reputable Chevrolet repair manual specific to your truck's year and engine specifications. These manuals will provide the initial timing setting and instructions for verifying and adjusting it.

Generally, the initial timing will be somewhere between 6 and 12 degrees BTDC (Before Top Dead Center) at idle. However, this is just a *starting point*. The final timing will need to be adjusted using a timing light and verified according to the procedures outlined in your repair manual. Incorrect timing can severely damage your engine. If you lack experience, it is strongly recommended that you seek assistance from a qualified mechanic.