What is the timing degree on a 350 chevy engine?

Question

I have a 1987 Chevy Truck, need to set timeing, not sure where the timeing needs to be set.

Answer 1

I own a shop, and can tell you this; You must go by the tag on the front of the radiator shroud, or the hood. If it is missing, then set it at 8-10 degrees with the connector unhooked under the dash behind the glove box (brown wire) that is by itself. Pull the plug apart, and don't forget to put it back when you are done. Run the engine till its at operating temperature, shut off engine, remove/unplug from brown wire, start the engine, set the timing, stop the engine, torque the hold down bolt to distributor, start engine & recheck timing, if good, stop engine, and replace/connect on brown wire. If you have a check engine light on, you can either wait to see if it goes out on its own, or remove (-) battery cable. I would wait due to loosing radio presets, and/or other things. It should go off in about 10 minutes or less on its own. Don't set your timing at anything other than what it calls for. Giving it just a little more timing doesn't help. This is because the computer controls the ignition timing anyway after the engine comes up to operating temperature.
Glad to help out, Good Luck!!!

Answer 2

Most of the 350 that are fuel injected by means of a TBI unit have a base timing of 0 degrees although I always tried to get more by means of giving the base timing about 2 to 4 degrees before top dead center. I am assuming you have a PCM which controls a TBI fuel injection system. To set the base timing on these you first have to disconnect the timing connector that goes from the distributor back to the PCM. This is usually a brown wire with a white stipe on it. The connector for it is usually located close to or mounted on the firewall or under the dash on the passenger side. In either case it is normally concealed, but by now someone must have tried to time the truck so it should be hanging close to these areas. Once you have located this connector, run the truck to operating temp. with a timing light connected. Then when the motor is close to operating temp, unplug the one wire connector. The check engine light will come on but don't worry about that. Now aim the timing light directly down behind the water pump and set the base timing. Once happy, turn motor off. Reconnect the wire connector. Start the truck and confirm the check engine light went off, or clear the code by disconnecting the battery. It will clear by itself in time. Good luck.

Answer 3

4 deg btc

Answer 4

10 degrees befor dead top center.