Hot Heads Research & Racing

Hemi Engine Identification

All engine numbers are stamped on top of block in front of valley cover.
Note: This list includes most automobile hemis. The industrial marine and poly motors are not included. Contact us if you need assistance identifying any of those blocks.

 Sequence Year Name C.I. Carb. BBL H.P.
DESOTO:
S17 - 1001 1952 Firedome 276 2 160
S16 - 1001 1953 Firedome 276 2 160
S19 - 1001 1954 Firedome 276 2 170
S21 - 1001

 1955

Fireflite

 291

 4

 200

S22 - 1001  1955 Firedome 291 2 185
S23 - 1001 1956 Firedome 330 2 230
S24 - 1001 1956 Fireflite 330 4 255
S24A - 1001

 1956

 Adventurer

 341

 2-4

 320*

S25 - 1001 1957 Firedome 341 2 270
S26 - 1001 1957 Fireflite 341 4 295
S26A - 1001 1957 Adventurer 345 2-4 345*
 
 DODGE:
D44 - 1001 1953 Red Ram 241 2 140
D50A - 1001 1954 Red Ram 241 2 140
D50 (1, 2, 3) 1954 Red Ram 241 2 150
D553 - 1001 1955 Super Red Ram 270 2 or 4 183 or 193
D500 - 1001 1956 D500 315 4 260
KD500 - 1001 1957 D500 325 4 or 2-4 285 or 310
 
 CHRYSLER:
C51 - 8 - 1001 1951 Chrysler 331 2 180**
C52 - 8 - 1001 1952 Chrysler 331 2 180**
C53 - 8 - 1001 1953 Chrysler 331 2 180**
C541 - 8 - 1001 1954 New Yorker 331 2 195**
C542 - 8 - 1001 1954 New Yorker 331 4 235**
WE55 - 1001 1955 New Yorker 331 2 250
NE55 - 1001 1955 New Yorker 331 4 250
CE55 - 1001 1955 Imperial 331 4 250
3NE55 - 1001 1955 C300 331 2-4 300***
NE56 - 1001 1956 New Yorker 354 4 280
CE56 - 1001 1956 Imperial 354 4 280
3NE56 - 1001 1956 300B 354 2-4 340***
NE57 - 1001 1957 New Yorker 392 4 325
3NE57 - 1001 1957 300C 392 2-4 375***
CE57 - 1001 1957 Imperial 392 4 325
58N - 1001 1958 New Yorker 392 4 345
58C - 1001 1958 Imperial 392 4 345
58N3 - 1001 1958 300D 392 2-4 380
* Very rare! All 4 BBL engines were approximately 10% of production.
** 1951 through mid-1954 have bell housings cast onto block.
*** 300 High Performance Option

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