as a follow up, the length of my dipstick is 13 13/16" to the top of the shaft from the full line (it has no handle, just a wire run through it). The motor is a 59 261

There is an engine on a well drilling rig that has a casting number 3877178 C followed by a "GM" and a 26. From the research I did, that is a 1962-78 230-250 that was in a few different brands. I think it came out of a truck, but I do not know the year. Anyway, the tube out of the motor is 7", and the one on my truck is pretty near 7". The dipstick in the well rig is slightly shorter, but I think I can use it, just put new marks on it.

My question is, what does "under washer" mean precisely? I need to know where to measure for the new full mark.

Thanks


1959 Chevy Viking. Belonged to my Great Grandfather