1968 440 block markings -S (Special)
#1
1968 440 block markings -S (Special)
Hi-
Block = PT 440 S 24690503
The PT is Trenton Plant
440 = 440 CI Motor
S = Special Motor
2469 = May 1st, 1968
0503= Last 4 of Vin
Can anyone tell me what Special Motor means?
Block = PT 440 S 24690503
The PT is Trenton Plant
440 = 440 CI Motor
S = Special Motor
2469 = May 1st, 1968
0503= Last 4 of Vin
Can anyone tell me what Special Motor means?
#2
i only have two 1967 factory service manual, one chrysler, one dart,coronet, charger. i found no info on the letter S. at first i thought the S-special meant HI Performance. but i found this on the internet.
http://www.moparts.org/
Other Stampings
Additional stampings may be found on the ID pad.
They identify non standard engine components.*
A - .020 oversize cylinder bores
Diamond - oversize tappets
E - Cast Crankshaft
HP - High Performance
L or LC - low compression
M - .001 undersize main bearing journals
Maltese Cross - .001" undersized bearing shells
Maltese Cross and an X - .010" undersized crankshaft
O.S. - .005 oversize valve stems
P - premium fuel
R - regular fuel
RX or MX - all main or rod journals .010" undersized
S - special engine
WT or TW - water test
X - .010" undersize crankshaft
my next guess is police.
http://www.moparts.org/
Other Stampings
Additional stampings may be found on the ID pad.
They identify non standard engine components.*
A - .020 oversize cylinder bores
Diamond - oversize tappets
E - Cast Crankshaft
HP - High Performance
L or LC - low compression
M - .001 undersize main bearing journals
Maltese Cross - .001" undersized bearing shells
Maltese Cross and an X - .010" undersized crankshaft
O.S. - .005 oversize valve stems
P - premium fuel
R - regular fuel
RX or MX - all main or rod journals .010" undersized
S - special engine
WT or TW - water test
X - .010" undersize crankshaft
my next guess is police.
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