If there was old gas in the tank when you added fresh gas & started it you may be in for trouble. The old gas is pretty much varnish. The fresh gas will mix with the varnish and take it to your intake valves. When you shut the engine off the varnish will stick to the valve stems and possibly stick them shut. If you now have stuck valves, the next time you crank the engine you will either bend pushrods or break rocker arms.

I made that same mistake on my 38 & had to replace two pushrods because they bent. The safest thing to do now (if there was old gas in the tank) is pull the gas tank. Clean & coat the inside of it. Pull the head and R&R the valves, giving them a good cleaning and lapping.

I know that isn't what you wanted to hear but it's something you need to be aware of. If the gas tank had been drained before storage you probably won't have a problem. Good luck.

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