Found my dads original 1971 duster!

Someone said earlier that too much timing will make it run hot. That's incorrect. Not enough timing makes one run hotter. Where is your initial timing? If it's too low, you start the burn late and it's still burning coming out of the engine and produces more heat.
Hey. Thanks! I had a friend check the timing and it’s 4 degrees and 27 degrees. Does that make sense? I know zero about what timing is. Thanks Also, I finally found hose that goes from canister on rocker cover to the breather. Since installing it, it’s really hard to start once it’s warmed up (like if I stop for gas then go to re start). Not sure if the hose could affect anything, or it’s just coincidence