Poly Engine Numbers, Colors, Photos
I have complied the following date codes,casting numbers, and color details from factory manuals, brochures, personal observations digging through my parts and sticking my head into engine compartments at cruise nights, museum collections, and getting input from other A-block owners. If you have additional numbers, particularly those of you with export engines typically from Canada and British Columbia, feel free to contact me using the tab at the bottom of the page.

Note: Export/Canadian IDs are stamped on a pad on the right front


Poly Engine ID Numbers
ENGINE CID YEAR
P29 277 1956 (number also used on 1956 Plymouth hemi-block Dodge 270)
FP29 303 1956
P31-1 277 1957
P31-2 301 1957
LP31/FLP31 318 1957
LP8 318 1958
LD2/L325 326 1959 Dodge
DMP8 318 late 1959 Dodge
MP8 318 1959
TMP8 318 1959 Dodge Truck, confirmed visual
P318 318 1960
PV3 313 1960 Export
R318 318 1961
RV3 313 1961 Export
S318 318 1962
SV3 313 1962 Export
T318 318 1963
TV318 313 1963 Export
V318 318 1964
VV3 313 1964 Export
A318 318 1965
AV3 318 1965 Export
B318 318 1966
CV3 318 1967 Export
- Note: 318-2 and 318-3 often designates an industrial/heavy truck/RV/marine engine.
Poly Engine Casting Numbers
Note: This is not a complete list but what I have. The years listed are those I have confirmed had these casting numbers via parts manuals and other enthusiasts, but they do not mean that those are the only years that used the numbers since Mopar used whatever parts were available. Earlier casting numbers, taking into account the 1962 design change, have been confirmed on later model vehicles (e.g. a 1963 casting in a 1965 vehicle). For engine block identification, refer to the stamped ID above in conjunction with the block casting number.
Blocks
1618729 1956 – 1957 (277 and 303)
1639609 1956 – 1957 (277 and 303)
1676329 1956 – 1957 (277 and 303)
1736118 – 1957 – 1958 (301, 313, 318)
1737929 – 1957 – 1959 (301, 313, 318)
1851249 – 1956 – 1957 (277 and 303)
1855207 – 1958 (313 and 318)
1859497 – 1960 – 1961 (313 and 318)
1859616 – 1959 (313, 318, 326)
1945078 – 1960 (313, 318)
1945079 – 1959 – 1960 (313, 318)
1945373 – 1961 (313, 318)
2737929 – 1960 – 1961 (313 and 318)
2264230 – 1960 -1961 (313 and 318)
2264370 – 1963 (313 and 318)
2268306 – 1962 (313 and 318)
2268509 – 1962 – 1966 (313 and 318)
2532630 – 1962 – 1966 (313 and 318)
2402971 – 1963 – 1966 (313 and 318)
2468230 – 1963 – 1966 (313 and 318)
2532674 – 1963 – 1966 (313 and 318)
Crankshafts
1630937 – 1955 – 1957 (3.13″ stroke)
1732557 – 1955 – 1957 (3.13″ stroke)
1732610 – 1957 – 1960 (3.31″ stroke)
1826123 – 1957 – 1961 (3.31″ stroke)
1859752 – 1957 – 1961 (3.31″ stroke)
2268119 – 1962 – 1966 (3.31″ stroke)
Cylinder Heads
1618721 – 1956 – 1961
2268341 – 1962 – 1966
- Note: The 2268341-13 head may have a quality control issue. I discuss the issue and repair in this article.
Intake Manifolds
1822004 – 1957 – 1958 “Dual Fury V-800” 2 x 4 barrel
1619826 – 1957 – 1962 “Fury V-800 Super-Pak” 4 barrel (4-barrel production stopped in 1963)
1630944 – 1956 – 1957 “Fury V-800” 2 barrel
1859228 – 1957 – 1966 “Fury V-800” 2 barrel
E5793M – “Chrysler Sea V” marine dual carburetor intake
Exhaust Manifolds
1945095 – Left and right center dump w/out generator bracket (1956 – 1961 or so)
1945094 – Right center dump w/generator bracket (1956 – 1961 or so)
2129197 – Right and left center dump w/out generator bracket (about 1962 – 1966)
2268189 – Left “log” rear dump with narrower flat front (earlier version but need dates)
2532415 – Left “log” rear dump with wider flat front (need start date – 1966)
2858331 – Left “log” rear dump with carburetor choke hot-air port (1962+ Canadian, photo/info courtesy Brian Woodard)
Rocker Arms
2208172 – Intake Adjustable (originally on solid cams but interchangeable on all)
2208173 – Exhaust Adjustable (originally on solid cams but interchangeable on all)
- I need part numbers for 1959 – 1966 nonajustable rocker arms that came on hydraulic cam engines.
Poly Engine Colors (reference photos below)
Notes:
- No factory A-block was painted black or orange. Some people mistake faded red for orange.
- No factory car or truck A-block was painted Chrysler Corporation blue P4349217. Some marine engines may have been painted blue by the boat builder. Some people mistake faded Mopar turquoise for blue.
Modern Color Equivalents:
- Silver: Dupli-Color “Cast Coat Aluminum” DE1650 is extremely close if not exact. Hirsch “aluminum” is extremely close/exact. Mopar P4529148 is close but not exact.
- Gold: Bill Hirsch “Oldsmobile Gold Early” is exact. Dupli-Color DE1604 is very close. Mopar P4529149 is not exact.
- Red: Dupli-Color DE1632 is exact. Mopar P4349218 can be off.
- Turquoise: Bill Hirsch “Chrysler Turquoise” is exact. Dupli-Color DE1618 is very close. Mopar P4120752 is often too blue.
Engine Color Descriptions
Cars
1956 – 1960 2-barrel and Single 4-barrel:
- All silver engine
- Either red or black air cleaner (see photos)
1957 – 1958 Fury “Dual Fury V-800” Dual-quad:
- Silver block, heads, intake with gold valve covers and air cleaners
1961 – 1966 2- and 4-barrel:
- All red engine
- Black air cleaner
Trucks
1959 – around late 1960:
- All silver engine
- Black air cleaner
Late 1960 – 1966:
- All red engine
- Black air cleaner
Some 1962 – 1964 including 200 HP and 202 HP package:
- All turquoise engine
- Black air cleaner
Industrial
- Most were all red engine
- Some all turquoise engine
Marine
- Fury 210: All Turquoise
- Fury 235: All turquoise
- Chrysler Sea V: Usually all turquoise with some examples of all red
- Chrysler M318A: All turquoise
Poly Engine Photos for Color Reference

















(not all industrials had the tag riveted to the head)