413 casting numbers

[Derv]

Can anyone tell me what these numbers mean if anything? I was told it is a truck motor, Thanks

 

[khryslerkid]

http://www.moparts.org/Tech/Archive/motor/36.html

Need a better pic of the pad. Looks like "S" 41 "S" being a '62. "41" is 413

Casting on side of the block is a 413 1959-1965

 

[Derv]

Thanks this gave me all I needed.

 

[khryslerkid]

Thanks this gave me all I needed.

I want to see this area better...

 

[Sonny Black]

year is clearly marked in cast on block ....on older 413

usually

 

[khryslerkid]

I want to see this area better...
View attachment 635209

Thats where the assembly date is. Had to go out and look on mine. Its a '63 413

A lot of the newer blocks the ci moved to that area.

 

[Lefty71]

It was cast by Day Shift.

 

[Lefty71]

I want to see this area better...

All joking aside, wouldn't that 12-8 (as it appears) be the date the block was machined for use, or final assembled for use?? I guess it wouldn't matter much, as they were probably finished assembled pretty much right after machining plus a day maybe I would guess??

 

[khryslerkid]

All joking aside, wouldn't that 12-8 (as it appears) be the date the block was machined for use, or final assembled for use?? I guess it wouldn't matter much, as they were probably finished assembled pretty much right after machining plus a day maybe I would guess??

Yes thats the date of the assembly. The blocks were made months earlier.

 

[Lefty71]

How bout the Casting Letters? I never see them discussed. Anybody know if those are the casting plants?? If so, as in the pic provided "R. L." Anybody know the meaning, Kokomo do CI blocks once upon a time?? My 383 from '65 seems to have "L.L." cast into it. Could this actually mean "I.I." for Indy casting plant? I don't recall seeing any of those letters on the blocks later than mid-late 60's. Forgive me if it's been discussed. Thx, lefty71

 

[Derv]

I want to see this area better...
View attachment 635209

It is stamped 12 6