First of what I have.
1949 3800 dual rear wheels
The owners manual in glove box says "New Motor in May of 1964" There was a tag in the pages of the manual that leads me to believe it was a "crate" engine or whatever it would have been called then. It has about 50,000 miles since motor swap. Been mostly parked since 1972. In the mid 90's it was driven around a little.
The pad behind the dist. is stamped S1219P. I have looked at a few different engine sites and did not find anything with numbers close to this. I took the wire brush and screwdriver to the side of the block below the dist. and in front of it and could not find anything cast in it. I did this with the dist. removed to aid in vision and room to work. I have not found a site that has pictures where exactly i am looking. Most sites have close-ups of the numbers but they don't look much like my motor. I am thinking it is a 235 but would like more info if possible.

I finally got it running last week with the help of my buddy Speed. I also rebuilt the carb and set it. It is running off of a gas can till I can get a repacement tank. It is still 6 volt, new battery this spring.

Today we changed plugs, wires, cap, and rotor. We pulled the distributor out cleaned points and set gap. It appears the vacuum advance is working by the suck on the tube method. I didn't do the points as I am probably going to go with the Pertronix when funds allow. It cranks way longer than than I think it should before it starts. It runs smooth and drives good but the problem is it will not restart after warmed up.
We are thinking the 6 volt doesn't crank it fast enough? I finally put a 12 volt battery with jumper cables hooked to it on the cab floor. While cranking the starter I touched the jumper cable to the 12 volt and the starter speeds up and it starts pretty quick. I only did this a couple of times. I want to fix it right not cobble it along. Do you guys think it is a starter issue? Maybe worn out? Are these trucks known for having hot starting issues? There was another 6 volt battery installed on the drivers side but it was hooked up parallel to give 6 volts to the starter. I am thinking of buying another battery as funds allow and running all new cables but want some more opinions. Speed thinks I should just convert to 12 volts but I am not quite ready to do that just yet. The truck made 170,000 miles with 6 volts and will only probably see 1000 mile a year now.

I know a long post so a recap of ?s
Engine Serial # S1219P stamped behind dist.
What is it?
How do I get it to start hot like 180 degrees after running a while?


My new 1949 Chevy One Ton Dump Truck. Still have it but parked, needs a new motor.
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Updated Feb 2021