|
BLOCK CASTING NUMBERS AND SYMBOLS
|
|
Chrysler
engines may be identified in several ways. Obviously, no one will
mistake a slant-6 for a Hemi (at least we hope they won't), but
identifying which slant-6 or V8 a particular engine may be takes a
little more investigation. One way is to locate the large casting
number on the side of the block. Each engine displacement had a unique,
or set of unique, casting numbers on the block. A 318 will never share
a block casting number with a 273 or 340, nor will a 383 share a block
casting number with a 361 or 400. A casting date also appears on the
driver or passenger side of the block. The dates are in easy-to-read
formats such as: 3.15.69 or 3-15-69 (which means, of course, March 15,
1969). This casting date is the day the block was cast at the foundry.
Also on the side of the block is a symbol that looks like a clock, and
it is, sort of. This symbol may be on either side, not necessarily next
to the casting date, and it tells you the hour of the shift it was
actually cast. The pointer in the symbol points to the hour of the
shift it was cast. So, what shift was it cast on? Along with the
casting date and clock, there's a Day/Night shift indicator (a D and N
with a pointer aimed at one of the letters) that denotes the shift it
was cast on. In summary, block casting numbers and symbols will tell
you what year and displacement the engine is, and also what day it was
cast, down to the hour of the shift it was first poured into the mold! |
G/RG SLANT-6 BLOCKS
|
CASTING # |
C.I.D. |
YEAR |
GROUP |
2202843 |
170 |
|
G |
2205630 |
170 |
|
G |
2264478 |
170 |
|
G |
2463230 |
170 |
1965 |
G |
--- |
198 |
|
G |
2202857 |
225 |
|
RG |
2205528 |
225 |
|
RG |
2463430 |
225 |
1966 |
RG |
2806830 |
225 |
|
RG |
|
|
|
A/LA SMALL BLOCKS
|
CASTING # |
C.I.D. |
YEAR |
GROUP |
2465330 |
273 |
1964-66 |
LA |
2536130 |
273 |
1965 |
LA |
2466090 |
318 |
|
LA |
2536030-318 |
318 |
1967-75 |
LA |
2566080 |
318 |
|
LA |
2806030 |
318 |
1967-74 |
LA |
2780930-340 |
340 |
1968-73 |
LA |
3577130TA-340 |
340 |
1970-71 |
LA (Trans Am) |
3418496-360 |
360 |
1971-74 |
LA |
3870230 |
360 |
1975-UP |
LA |
2264230 |
318 |
1960-66 |
A |
2468230 |
318 |
|
A |
2532630-318 |
318 |
|
A |
|
|
|
B BIG BLOCKS
|
CASTING # |
C.I.D. |
YEAR |
GROUP |
2120229 |
361 |
|
B (Industrial) |
2205712 |
361 |
1958-66 |
B |
2468130 |
383 |
1959-71 |
B |
3614230 |
400 |
1971-72 |
B |
3698630 |
400 |
1973-78 |
B |
4006530-400-12 |
400 |
1976-78 |
B |
|
|
|
RB BIG BLOCKS
|
CASTING # |
C.I.D. |
YEAR |
GROUP |
1852029 |
413 |
1962 |
RB (Max Wedge) |
2120529 |
413 |
1959-65 |
RB |
2205697 |
413 |
1959-65 |
RB (Pass.car) |
2468030 |
413 |
|
RB |
2406730 |
426 |
1963-65 |
RB (Wedge) |
2468330 |
426 |
1964-71 |
RB (Hemi) |
2658836 |
426 |
|
RB (Industrial) |
2536430 |
440 |
1966-72 |
RB |
3698830-440 |
440 |
1973-78 |
RB |
|
|
ENGINE CASTING NUMBERS CONTINUED...
|
|