1990 chevy 350 distributor wiring diagram and firing order

thank you your info was very helpful but i dont know the cyclinder sequence to run the plug wires to the right cyclinder when i get it on number 1 at top dead center that all i lack i think thank you your info was very helpful but i dont know the cyclinder sequence to run the plug wires to the right cyclinder when i get it on number 1 at top dead center that all i lack i think

hey bud....I'm a licenced auto tech, pull your number 1 spark plug out, get a 5/8th socket, on a ratchet with an extension. Have someone plug the spark plug hole with their finger. Turn the engine over with the socket onto the front crankshaft pulley bolt, it's inside the lower crank pulley. turn the engine over clockwise, this way it won't loosen your crank bolt keep turning till your partner feels compressed air starting to push against their finger, as you feel the compression pushing on your finger, watch the timing mark, and when it reaches 0 degrees stop. Now you're on top dead center, firing on number one cylinder. Place your distributor back in, you'll have to move the shaft a bit to get the cam gear to engage. It may take a try or two to get it at approx the 5 o clock position. Once you have it down and in and your rotor is facing the 5 0 clock position, set your cap on and scratch on the cap where your rotor is pointing. The tang inside the cap facing the tip of the rotor is now your number 1 firing. when you've done this, then just run your wires to your plugs. firing order is 18436572, so after number 1 is on, going in the direction of rotor rotation , next place #8 wire on, then #4 etc. You'll have to fine tune the distributor for exact timing after you have it running. hey bud....I'm a licenced auto tech, pull your number 1 spark plug out, get a 5/8th socket, on a ratchet with an extension. Have someone plug the spark plug hole with their finger. Turn the engine over with the socket onto the front crankshaft pulley bolt, it's inside the lower crank pulley. turn the engine over clockwise, this way it won't loosen your crank bolt keep turning till your partner feels compressed air starting to push against their finger, as you feel the compression pushing on your finger, watch the timing mark, and when it reaches 0 degrees stop. Now you're on top dead center, firing on number one cylinder. Place your distributor back in, you'll have to move the shaft a bit to get the cam gear to engage. It may take a try or two to get it at approx the 5 o clock position. Once you have it down and in and your rotor is facing the 5 0 clock position, set your cap on and scratch on the cap where your rotor is pointing. The tang inside the cap facing the tip of the rotor is now your number 1 firing. when you've done this, then just run your wires to your plugs. firing order is 18436572, so after number 1 is on, going in the direction of rotor rotation , next place #8 wire on, then #4 etc. You'll have to fine tune the distributor for exact timing after you have it running.