360 casting number

[John Collins]

My engine casting number is 4006830-360-9. What does the 9 stand for? I’ve looked around, but only found one result that was for
4006830-360-4 and someone stated that the 4 designated how many changes that have occurred since the 360 came out to correct the thin walls. Any clarity would be appreciated. Thank you in advance!

 

[toolmanmike]

The 9th. revision to the pattern for the casting. It could be a change to the mold for the casting or to the core.

 

[JBurch]

The dash 9 reflects the number of core up dates preformed at the foundry, nothing to worry about

 

[John Collins]

Thank you guys!

 

[67notchb]

Anyone have any suggestions which 360 -number is more desired over another?

 

[John Collins]

I read somewhere that these had thicker walls, but I don’t know **** and my opinion means nothing here. 3418915

 

[70aarcuda]

That is what the mopar engine book said...has the same water jacket location as the 340 block....

stopped those in 73 went they stopped making the 340.....

 

[67notchb]

Good to know. I have a 3810230 360-6. Also, kinda on the topic, when did the 360 go to aluminum passenger side exit water pumps? Mine is a iron drivers side exit.

 

[70aarcuda]

Since the 360 first appeared in 1971....they all should have the aluminum passenger side water pump.....does not mean someone else changed it..

 

[67notchb]

I’m new to mopars and engine configurations. It’s a 67 barracuda that originally had a 273. Sounds like the timing cover and water pump could have been swapped to keep the original radiator. Half of the fun of being a second or fifth owner of a car is figuring out what is what.