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ENGINE CODES
 
 

PLYMOUTH
 
1960
Code Prefix
1961
Code Prefix
6-170
101hp, 8.5:1, 1brl
 P17 6-170
101hp, 8.2:1, 1brl
 R17
6-170
148hp, 10.5:1, 4brl
 P17 6-170
148hp, 8.2:1, 4brl
 R17
6-225
145hp, 8.5:1, 1brl
 P22 6-225
145hp, 8.5:1, 1brl
 R22
V8-318
230hp, 9:1, 2brl
 P318 6-225
196hp, 8.5:1, 4brl
 R22
V8-318
255hp, 9:1, 4brl
 P318 V8-318
230hp, 9:1, 2brl
 R318
V8-361
305hp, 10:1, 2brl
 P36 V8-318
260hp, 9:1, 4brl
 R318
V8-361
310hp, 10:1, 2-4brl
 P36 V8-361
265hp, 9:1, 2brl
 R36, R361
V8-383
325hp, 10:1, 4brl
 P38 V8-361
305hp, 9:1, 4brl
 R36
V8-383
330hp, 10:1, 2-4brl
 P38 V8-383
325hp, 10:1, 4brl
 R38
  V8-383
330hp, 10:1, 2-4brl
 R38
V8-383
340hp, 10:1, 2-4brl
 R38
V8-413
350hp, 10:1, 4brl
 R41
V8-413
375hp, 10:1, 2-4brl
 R41
 
1962
1963
6-170
101hp, 8.2:1, 1brl
 S17 6-170
101hp, 8.2:1, 1brl
 T17
6-225
145hp, 8.2:1, 1brl
 S22 6-225
145hp, 8.2:1, 1brl
 T22
V8-318
230hp, 9:1, 2brl
 S318 V8-318
230hp, 9:1, 2brl
 T318
V8-318
260hp, 9:1, 4brl
 S318 V8-361
265hp, 9:1, 2brl
 T36
V8-361
305hp, 9:1, 4brl
 S36 V8-383
330hp, 10:1, 4brl
 T38
V8-361
310hp, 9:1, 2-4brl
 S36 V8-426
415hp, 11:1, 4brl
 T42
V8-383
330hp, 10:1, 4brl
 S38 V8-426
425hp, 13.5:1, 4brl
 T42
V8-383
335hp, 10:1, 2-4brl
 S38  
V8-413
365hp, 11:1, 2-4brl
 S41
V8-413
385hp, 11:1, 2-4brl
 S41
V8-413
410hp, 11:1, 2-4brl
 S41
 
1964
1965
6-170
101hp, 8.5:1, 1brl
 V17 6-170
101hp, 8.5:1, 1brl
 A170
6-225
145hp, 8.4:1, 1brl
 V22 6-225
145hp, 8.4:1, 1brl
 A225
V8-273
180hp, 8.8:1, 2brl
 V273 V8-273
180hp, 8.8:1, 2brl
 A273
V8-318
230hp, 9:1, 2brl
 V318 V8-273
235hp, 10.5:1, 4brl
 A273
V8-361
265hp, 9.1:1, 2brl
 V36 V8-318
230hp, 9:1, 2brl
 A318
V8-383
330hp, 10:1, 4brl
 V38 V8-361
265hp, 9:1, 2brl
 A361
V8-413
360hp, 10.1:1, 4brl
 V413 V8-383
2700hp, 9.2:1, 2brl
 A383
V8-426
365hp, 10.3:1, 4brl
 V42 V8-383
330hp, 10:1, 4brl
 A383
V8-426
415Hp, 11:1 2-4brl
 426 V8-426
315hp, 10.3:1, 4brl
 A426
V8-426
425Hp, 12.5:1 2-4brl
 426 V8-426
365Hp, 10.3:1 4brl
 A426
  V8-426
415Hp, 11:1 2-4brl
 AH426
V8-426
425Hp, 12.5:1 2-4brl
 AH426HC
 
1966
1967
6-170
101hp, 8.5:1, 1brl
 B170 6-170
115hp, 8.5:1, 1brl
 C170
6-225
145hp, 8.4:1, 1brl
 B225 6-225
145hp, 8.4:1, 1brl
 C225
V8-273
180hp, 8.8:1, 2brl
 B273 V8-273
180hp, 8.8:1, 2brl
 C273
V8-273
235hp, 10.5:1, 4brl
 B273 V8-273
235hp, 10.5:1, 4brl
 C273
V8-318
230hp, 9:1, 2brl
 B318 V8-318
230hp, 9:1, 2brl
 C318
V8-361
265hp, 9:1, 2brl
 B361 V8-383
270hp, 9.2:1, 2brl
 C383
V8-383
270hp, 9.2:1, 2brl
 B383 V8-383
280hp, 10:1, 4brl
 C383
V8-383
325hp, 10:1, 4brl
 B383 V8-383
325hp, 10:1, 4brl
 C383
V8-426
365Hp, 10.3:1 4brl
 B426 V8-426
425Hp, 10.25:1 2-4brl
 C426
V8-426
425Hp, 10.3:1 2-4brl
 BH426 V8-440
350hp, 10:1, 4brl
 C440
V8-440
365hp, 10:1, 4brl
 B440 V8-440
375hp, 10:1, 4brl
 C440
 
1968
1969
6-170
115hp, 8.5:1, 1brl
 PM, PT170 6-170
115hp, 8.5:1, 1brl
 PM, PT170
6-225
145hp, 8.4:1, 1brl
 PM, PT225 6-225
145hp, 8.4:1, 1brl
 PM, PT225
V8-273
190hp, 9:1, 2brl
 PM, PT273 V8-273
190hp, 9:1, 2brl
 PM, PT273
V8-318
230hp, 9:1, 2brl
 PM, PT318 V8-318
230hp, 9:1, 2brl
 PM, PT318
V8-340
275hp, 10.5:1, 4brl
 PM, PT340 V8-340
275hp, 10.5:1, 4brl
 PM, PT340
V8-383
290hp, 9.2:1, 2brl
 PM, PT383 V8-383
290hp, 9.2:1, 2brl
 PM, PT383
V8-383
300hp, 10:1, 4brl
 PM, PT383 V8-383
300hp, 10:1, 4brl
 PM, PT383
V8-383
330hp, 10:1, 4brl
 PM, PT383 V8-383
330hp, 10:1, 4brl
 PM, PT383
V8-383
335hp, 10:1, 4brl
 PM, PT383 V8-383
335hp, 10:1, 4brl
 PM, PT383
V8-426
425Hp, 10.25:1 2-4brl
 PM, PT400 V8-426
425Hp, 10.25:1 2-4brl
 PM, PT400
V8-440
350hp, 10.1:1, 4brl
 PM, PT440 V8-440
375hp, 10:1, 4brl
 PM, PT440
V8-440
375hp, 10:1, 4brl
 PM, PT440 V8-440
390hp, 10:1, 3-2brl
 PM, PT440
 
1970
1971
6-198
125hp, 8.4:1, 1brl
 PM,PT,NM,FW198 6-198
125hp, 8.4:1, 2brl
 PM,PT,NM,FW198
6-225
145hp, 8.4:1, 1brl
 PM,PT,NM,FW225 6-225
145hp, 8.4:1, 1brl
 PM,PT,NM,FW225
V8-318
230hp, 8.8:1, 2brl
 PM,PT,NM,FW318 V8-318
230hp, 8.6:1, 2brl
 PM,PT,NM,FW318
V8-340
275hp, 8.8:1, 4brl
 PM,PT,NM,FW340 V8-340
275hp, 10.3:1, 4brl
 PM,PT,NM,FW340
V8-383
290hp, 8.7:1, 2brl
 PM,PT,NM,FW383 V8-360
255hp, 8.7:1, 4brl
 PM,PT,NM,FW360
V8-383
330hp, 9.5:1, 4brl
 PM,PT,NM,FW383 V8-383
275hp, 8.5:1, 2brl
 PM,PT,NM,FW383
V8-383
335hp, 9.5:1, 4brl
 PM,PT,NM,FW383 V8-383
300hp, 8.5:1, 4brl
 PM,PT,NM,FW383
V8-426
425Hp, 10.25:1 2-4brl
 PM,PT,NM,FW426 V8-426
425Hp, 10.25:1 2-4brl
 PM,PT,NM,FW426
V8-440
350hp, 9.7:1, 4brl
 PM,PT,NM,FW440 V8-440
335hp, 8.5:1, 4brl
 PM,PT,NM,FW440
V8-440
375hp, 9.7:1, 4brl
 PM,PT,NM,FW440 V8-440
370hp, 9.5:1, 4brl
 PM,PT,NM,FW440
V8-440
390hp, 10.5:1, 3-2brl
 PM,PT,NM,FW440 V8-440
385hp, 10.3:1, 3-2brl
 PM,PT,NM,FW440
 
1972
1973
6-198
100hp, 8.4:1, 1brl
 PM,PT,NM,FW198 6-198
95hp, 8.4:1, 1brl
 JM, JT198
6-225
110hp, 8.4:1, 1brl
 PM,PT,NM,FW225 6-225
105hp, 8.4:1, 1brl
 JM, JT225
V8-318
150hp, 8.6:1, 2brl
 PM,PT,NM,FW318 V8-318
150hp, 8.6:1, 2brl
 JM, JT318
V8-340
240hp, 8.5:1, 4brl
 PM,PT,NM,FW340 V8-340
240hp, 8.5:1, 4brl
 JM, JT340
V8-360
175hp, 8.8:1, 2brl
 JM, JT360 V8-360
170hp, 8.4:1, 4brl
 JM, JT360
V8-400
190hp, 8.2:1, 2brl
 PM,PT,NM,FW400 V8-400
175hp, 8.2:1, 2brl
 JM, JT400
V8-400
255hp, 8.2:1, 4brl
 PM,PT,NM,FW400 V8-400
185hp, 8.2:1, 2brl
 JM, JT400
V8-440
225hp, 8.2:1, 4brl
 PM,PT,NM,FW440 V8-400
260hp, 8.2:1, 4brl
 JM, JT400
V8-440
280hp, 8.2:1, 4brl
 PM,PT,NM,FW440 V8-440
220hp, 8.2:1, 4brl
 JM, JT440
V8-440
330hp, 10.3:1, 3-2brl
 PM,PT,NM,FW440 V8-440
280hp, 10.3:1, 6brl
 JM, JT440
 
1974
1975
6-198
95hp, 8.4:1, 1brl
 4M, 4T198 6-225
95hp, 8.4:1, 1brl
 5M, 5T225
6-225
105hp, 8.4:1, 1brl
 4M, 4T225 V8-318
145hp, 8.5:1, 2brl
 5M, 5T318
V8-318
150hp, 8.6:1, 2brl
 4M, 4T318 V8-318
150hp, 8.5:1, 2brl
 5M, 5T318
V8-360
180hp, 8.4:1, 2brl
 4M, 4T360 V8-360
180hp, 8.4:1, 2brl
 5M, 5T360
V8-360
200hp, 8.4:1, 4brl
 4M, 4T360 V8-360
230hp, 8.4:1, 4brl
 5M, 5T360
V8-360
245hp, 8.4:1, 4brl
 4M, 4T360 V8-400
165hp, 8.2:1, 2brl
 5M, 5T400
V8-400
185hp, 8.2:1, 2brl
 4M, 4T400 V8-400
175hp, 8.2:1, 2brl
 5M, 5T400
V8-400
205hp, 8.2:1, 4brl
 4M, 4T400 V8-400
190hp, 8.2:1, 4brl
 5M, 5T400
V8-400
250hp, 8.2:1, 4brl
 4M, 4T400 V8-400
235hp, 8.2:1, 4brl
 5M, 5T400
V8-440
230hp, 8.2:1, 4brl
 4M, 4T440 V8-440
215hp, 8.2:1, 4brl
 5M, 5T440
V8-440
275hp, 8.2:1, 4brl
 4M, 4T440  
 

Engine Non Standard codes:

1960: AF- Blank engine is standard. A- .020" Overbore. B- .010" undersize Journal. AB- Both. Diamond- .008" oversize lifters. Maltese Cross- .001" undersize crankshaft journals

1961-62: A- .020" Overbore. B- .010" undersize Journal. Maltese Cross- .001" bearing undersize. Diamond- .008" oversize lifters. HP- high performance. X & Maltese Cross-.010" bearing undersize. SP- Special police cars LC- Low Compression HD- 10.5" Clutch

1963: LC- Low comp. HC- High comp. HP- High perfor. MP- Medium perfor. Maltese Cross- .001" undersize crank journals. X & Maltese Cross-.010" undersize crank journals. A- .020" oversized cylinder bore. *- .008" oversize lifters.

1964: Maltese Cross- .001" undersize crank journals. X & Maltese Cross or B-.010" undersize crank journals. A- .020" oversized cylinder bore. *- .008" oversize lifters.

1965- 67: Maltese Cross- .001" undersize crank journals. X & Maltese Cross- .010" undersize crank journals. A- .020" oversized cylinder bore. *- .008" oversize lifters. O/S- .005" oversized valve stems

1968: L, LC- Low comp. Maltese Cross- .001" undersize crank journals. X- .010" undersize crank journals. A- .020" oversized cylinder bore. *- oversize tappets.

1969: Maltese Cross- .001" undersize crank journals. X & Maltese Cross- .010" undersize crank journals. A- .020" oversized cylinder bore. Diamond- .008" oversize tappets. M-2-3 -#2&3 Main bearing journals undersize. R-1-4 -#1&4 Rod journals undersize. M-10 - .010" undersized main bearing journals. R-10 -.010" undersized rod journals

1966-67: V8-440: Left front of block below thermostat housing.

1968-73 V8-383, 426, 440: Left side rear of block near oil pan flange.

1971-72 V8-400: Right front of block below head.

1972 V8-440: Upper left front of block

1973-75 V8-400,440: Upper right front of block

Location:

1960-61: V8-383 Top of block behind water pump.

1973-75: Engine identified by cubic inch stamped within engine number stamped on pad.

1962-75: 6 CYL.: Right front of block below head.

V8-273, 318, 340, 360: Left front block below head.

1962-67: V8-361, 383: Right front of block below distributor.

1960-65: V8-413: Top of block behind water pump.

1963-67: V8-426: Left front of block left of water pump.

1966-67: V8-440: Left front of block below thermostat housing.

1968-73 V8-383, 426, 440: Left side rear of block near oil pan flange.

1971-72 V8-400: Right front of block below head.

1972 V8-440: Upper left front of block

1973-75 V8-400,440: Upper right front of block

1- Before 12-19-62 - T42

2- After 12-19-62 - TMP 426, 11:1. TMP-HC 13.5:1

3- AR22 - Aluminum engine

4- Some early 361, 383 were marked engine displacement followed by a serial number
     
 
The engine code decoder reveals the stamp location, engine displacement, horse power, compression ratio, and Carburetor configuration.
Engine Build Date Codes