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67 440 ID Info

MTBRider

MTBRider

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I’m trying to understand the details on my 440 and could use some help decoding the info on the ID pad. From info I found on moparts.org I believe the C440 means it’s a 67 440 block but I don’t know what the “iron cross” symbol or the “12” “23” “2” numbers mean.
Any info would be appreciated!
637D42D6-BFAB-4B8A-A09E-9584E9425574.jpeg
 
12 December
23 23rd day of the month
2 second shift

Maltese Cross=...........0.001" undersized crankshaft
Maltese Cross + X=......0.010" undersized crankshaft
 
C440 = 67
12 23 = build date 12/23/1966
2 = second shift
Maltese cross = .10 under size bearings.
There is no HP so it wasn't a high performance engine.
 
Jerry Hall said:
C440 = 67
12 23 = build date 12/23/1966 More accurately EAD (Engine Assembly Date)...
2 = second shift
Maltese cross = .10 under size bearings.
There is no HP so it wasn't a high performance engine.
Click to expand...
 
Thanks for all the info!
Just to clarify, .010 inch undersize crank bearings or .100 inch undersize? Any idea of the reason for the undersize condition?
 
MTBRider said:
Thanks for all the info!
Just to clarify, .010 inch undersize crank bearings or .100 inch undersize? Any idea of the reason for the undersize condition?
Click to expand...

I don't see an X so it's not .010... It is .001..... It's certainly not .100.... And usually it's not all the journals just one or two & that info will be stamped into the front counter weight on the crankshaft...
 
Ok, thanks. Sounds like it’s just because of a mfg tolerance issue and they just stamp to identify it.
 
MTBRider said:
Thanks for all the info!
Just to clarify, .010 inch undersize crank bearings or .100 inch undersize? Any idea of the reason for the undersize condition?
Click to expand...
.010
 
1 Wild R/T said:
Sorry, no... Chrysler would stamp the Maltese cross to inform of a .001 undersize bearing... A .010 undersize bearing was identified with the Maltese cross plus an X....
Click to expand...
Thanks I didn't look in the service manual on that one. Memory getting old.
 
Manual! We don’t need no stinking manual! (well maybe sometimes)
Thanks all for the help
 
What gives with the two different style font "4"s in the "4 4 0"? Is that common on this stamping pad?
 
SgtSuperbird said:
What gives with the two different style font "4"s in the "4 4 0"? Is that common on this stamping pad?
Click to expand...
Remember they were stamped. Looks to me to be the same, just one not struck as hard.
 
Jerry Hall said:
Remember they were stamped. Looks to me to be the same, just one not struck as hard.
Click to expand...
:poke: Hay, it was the 2nd shift and was probably tired. I would not mind having it.
 
Last edited:
MTBRider said:
I’m trying to understand the details on my 440 and could use some help decoding the info on the ID pad. From info I found on moparts.org I believe the C440 means it’s a 67 440 block but I don’t know what the “iron cross” symbol or the “12” “23” “2” numbers mean.
Any info would be appreciated!View attachment 1051764
Click to expand...
If my eyes haven’t deceived me, it has .20 oversized pistons.
 
OTHER STAMPINGS:
Diamond = 0.008-in. oversize tappets
Maltese Cross = 0.001-in. undersized crankshaft
Maltese Cross and an X = 0.010 undersized crankshaft
A = 0.020-in. oversized cylinder bore
B = 0.010-in. undersized main and rod bearings
E = cast crankshaft
H = standard 4bbl
HP = high performance
LC = low compression
O.S. = 0.005 oversized valve stems
P = premium fuel recommended
R = regular grade fuel may be used
S = special engine
WT or TW = water test
X = oversized valve guides

https://www.e-bodies.org/resources/...endar-date-code/1969-model-year-engine-trans/
 
Last edited:
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