I’m having trouble decoding this number. Next to the distributor S0319XXM. 3836850 says it 261, 3769925 I have seen for 261 from 1958 to 62. The truck is 1948 2ton wrecker. So not the original motor. Pretty sure it’s a 261

Edit by Moderator: I moved your post to start a new thread. It’s always better to start your own thread so it’s not confused with the original post. You’ll get info that pertains to your engine.

Last edited by Phak1; 09/26/2023 11:54 PM.