What a great story, bringing Dad’s truck back to life! I recently got a 1963 C50 started after it sat for 20 years in my neighbors yard. Here is the list I used to get it going. I actually hooked up a temporary fuel tank to bypass the behind seat tank. I was successful, on day 2 anyway! What a feeling it was having the engine fire up for the first time and drive it across the street to my ranch. Anyway, here is the list I used
Start C50
1. Turn engine nut/rotate eng (see if it’s siezed)
2. Replace crankcase oil & filter
3. Squirt oil can/marvel mystery oil into spark plug holes
4. Rotate engine by hand (lubricate piston cylinders)
5. New Spark plugs
6. New Spark plug wires, points, condenser, distrib cap
7. Clean air filter/housing/carb
8. Clean fuel/filter/temporary tank
9. Check coolant level in radiator/quality
Battery
Start it up! If it runs then:
9. Rubber hoses: radiator, heater hoses (if any), vacuum, fuel lines
10. Clean coolant-radiator flush, replace thermostat
11. Replace Fan belts
12. Brakes/brake fluid
14. Trans fluid
15. Rear end fluid
16. Adjust timing 4°BTDC, plug vacuum
17. Compression test 140psi
https://67-72chevytrucks.com/vboard/...d.php?t=826705
Send more pics if you have them, engine compartment, side emblems we can figure out what year yours is