Classic/Antique Car Repair: 72 el camino, piston rings, ruptured diaphragm

Question
i have a 72 elky with a 307 motor, car hasn't ran in 2 yrs but did run rough before.car cranks over and spuders for few seconds then dies.getting fuel to carb, timing is on t.d.c,gets spark from plugs however recently checked oil and has smell of fuel in oil, and vis of oil is thin. my question..piston rings shot maybe?

Answer
A lot of fuel in the gas usually points to a ruptured diaphragm in the fuel pump. This pumps gasoline right into the crankcase. I would change the oil and check or replace the fuel pump before trying to start the engine again. Crankcase explosions were a common thing back in the day. Then with new oil and a good fuel pump contact me again and we will get into a diagnosis for the  no run condition.