1981 Chevy Camaro car wont start

With it popping it is the timing. Take number one plug out. Disconnect the coil and remove distributor cap. With a compression guage turn the engine over until it is on the compression stroke. Note where the distributor is pointing when you have compression. Check the cap and to see where the distributor would be fireing in relation to where number one is. Check to see where the timing mark lines up. This will give you the basic timing. If you miss the compression stroke the engine will have be turned over 2 more times before it comes up again you have 1 compression stroke, 2 exhaust stroke 3 intake stroke then compression stroke again. It might take a few tries but you will get it.