its either ur timing belt or ur sparkplug wires r wrong
While an incorrect fuel/air ratio can cause a misfire, it's not likely to cause only one cylinder to misfire unless you have tuned port injection. The more likely cause is the ignition system... Distributor cap, rotor, plug wires, or spark plugs.
3.48"
1969
250 to 350 hp depending on what model
350, to 400 lbs.
Bad distributor cap, wires, plugs, injectors, low compression, broken valve spring, vacuum leak. Realey need to know the year, to help you better.
It's lean.
lack of lubrication
1969
a vacuum leak.
10W30 would be recommended.
casting number 3970010 is a 350 block from 1969 - 1979 but in 1969 302 and 327 have the same casting # and im not to sure about the other #