73 Dodge engine number stamp location?

[Thenoob]

Hi guys

Thanks for all your help

Anyone know where to find the engine stamp for your Winnie? I have a 73 d18, I thought a 318.

Switched yes yesterday and the ones I took out matched the 360 in napa database, the ones for the 318 were way to small.

Looks like the original engine, just very curious before I got about fixing a lot of parts, wanna know what a guy has!

[DaveVA78Chieftain]

for the M300 chassis used in 71-73 the 318-3 was standard with a 413-1 option
For the RM300 chassis used in 73-75 the 318-3 was standard with a 440-3 option

In both cases, the optional engine was not available for the 104" chassis.  Only 125" and longer.

360-3 first appeared as the base M300 engine in 76.

Dave

[Lefty]

Since the Chrysler 318 LA series engines and the Chrysler 360 LA series engines are virtually a bolt in swap, it is entirely possible that a previous owner put a 360 engine in it.

A 360 engine is basically a bored and stroked 318, but it does use a totally different head with larger intake ports and different valves (1.88")
Should be able to find the blocks casting info and tell which engine you have.

[Thenoob]

Roger that
Very interesting, it really threw me off.  Nice to know they are basically bolt in switches.  I'm going to keep my eye out for one.

[DaveVA78Chieftain]

Engine ID is located in similar places on both 318 and 360



Dave

[Lefty]

by the way... Never, ever attempt to use a passenger car/ light truck intake on a 318-3 engine! the result will be water pumping straight out the tailpipe, as the 318-3 uses a water coolant filled port in it's head that is a exhaust gas recirculation port on the passenger car/ light truck intakes. While much of the parts between the light duty 318-1 and 318-2, and the 360 engines will bolt on and interchange with a 318-3 engine... there are a few that will definately not. Be sure to do research before a swap.
Another example is that the 360 uses an external balance weight on the torque converter, and a different flywheel and harmonic balancer.. these parts only work on a 360 engine and cannot be used on a 318. The 318 torque converter, flywheel/flexplate, and harmonic balancer cannot be used on a 360 either.
The 318-3 also used a very unique high mount water pump in a lot of installations. It has to do with putting the center of the fan inline with the radiator in taller truck chassis. I do not know if they will interchange onto a 360 or not. These are just things that you have to research any time your considering a swap even though the 318 and 360 are in the same engine family..

Btw- you are aware that a light duty 318 listing for a 1/2 to 1 ton Dodge truck or passenger car is not the same engine as the 318-3 engine used in HD and industrial applications, and uses a totally different spark plug seat...

Read this:
http://www.classicwinnebagos.com/forum/index.php?topic=5642.0