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.

Mopar A-block poly engine ID location — **Poly Engine ID Location for USA Engines**
**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.