No serial number

[tysouthwick]

I was examining my engine and I look at the place where my serial number should be and it is perfectly flat not even a trace of a number, Is this a bad thing or all trucks like this???

[Frank Elder]

Your engine could have come from an aftermarket rebuilder like Jasper, is it green?

[greg g]

Mopar sold blocks to rebuilders with no serial numbers. the reman folks were supposed to stamp some in, but a lot didn't. Look for a brass tag riveted to the side of the block in the general area of the distributor, or signs of a rivet.

[PatS....]

My industrial engine has no number on that spot.

[tysouthwick]

Your engine could have come from an aftermarket rebuilder like Jasper, is it green?

The color of the engine is silver, my neighbor says this is the supposed to be original to the truck

[Big_John]

I don't know if this helps or not, but in the sixties, when Chrysler started stamping VIN numbers on the engine block, it was common practice for Chrysler to ship replacement blocks for warranty work with no numbers stamped on the block. The mechanics were instructed to stamp the blocks with the VIN number. Being flat rate guys, that seldom happened.

It wouldn't suprise me if that had always been common practice for Chrysler to provide replacement blocks/engines with no serial numbers.

[Jim Saraceno]

my neighbor says this is the supposed to be original to the truck

I would say that if it has no number that it is unlikely to be the original engine, however it is probably just like the original engine.

Chrysler made those engines from 1935 to 1959 for Plymouth and Dodge. They also made them for military, marine and industrial use. It is not unusual to have the engines swapped out as most of them are interchangeable.

[Jim Benjaminson]

The factory replacement engines sold after the war did not have a serial number on the block. They did have a brass tag attached to the block with an engine model number on it which did't last long in the "real" world and were soon lost, torn off, etc. The casting date on the lower left (rear) to the starter will give a better indication of year.

[greg g]

As we have discused before, the casting dates may not be much help either as the blocks may have been cast months or even years ahead of assembly and installation into a vehicle.