Chrysler flathead engine

The Chrysler flathead engine is a flathead automotive engine manufactured by the Chrysler Corporation from 1924 through the 1950s.

Straight-4

Chrysler introduced a straight-four derivative of their new Flathead straight-six in 1926. Initially used by Chrysler, the straight-four was fitted to Plymouth and Dodge light trucks beginning in 1929, lasting in production through 1933.
The original version displaced and produced 38 hp. This was only produced in 1926, with displacement reduced to for 1927 and 1928. Power was initially rated the same but was upped to 45 hp during the 1928 model year.
After the introduction of the Plymouth brand in 1929, the base engine was enlarged to with the power rating remaining the same. It also equipped Dodge light trucks in 1929–1930. It was enlarged again to in 1930 with 48 hp. The engine was slightly revised for 1931 with 56 hp and 1932 with 65 hp for Plymouth only, Dodge continued with the 48 hp from 1931 to 1933. A small-bore version was developed for export markets in 1931, with a narrower bore which brought the RAC rating down from 21 to 15.6 hp. For 1932 the bore was made a little slimmer yet, bringing the tax horsepower rating to just beneath 15.5.

Displacement	Year	Horsepower	Applications	Bore	Stroke
	1926	38	Chrysler model F-58
	1927	38	Chrysler Series 50
	1928	38-45	Chrysler Series 52
	1928	45	Plymouth Model Q
	1929	45	Plymouth U
	1929	45	Dodge 1/2 Ton
	1930	45	Dodge U1-A/B/C
	1930	48	Plymouth 30U
	1931	56	Plymouth PA
	1931	48	Dodge UF-10, U1-B/C
	1932	65	Plymouth PB
	1932	48	Dodge E, UF-10, U1-B/C
	1933	48	Dodge UF10, UG20/21
	1931	n/a	Plymouth PA
	1932	n/a	Plymouth PB

Straight-6

There were essentially two lines of flathead inline-sixes made by the Chrysler Corporation. Chrysler and DeSoto used a longer block with greater cylinder spacing, while Dodge and Plymouth shared a block. There is one exception to this: when Chrysler established an engine foundry in Windsor, Canada in 1938, it was decided to only use the long block for all Canadian-built engines. These engines received a trailing "C" in their designation, becoming P8C for example. Thanks to judicious dimensioning, the Canadian 201- and 218-cubic inch engines had nearly identical displacement to their American cousins.
Beginning in 1938, the inline-six was used in Massey Harris's Model 101. It continued to be used by Massey until 1940, when it was supplanted by the. In 1940, Chrysler's straight six went into Massey's 201 Super, which lasted until 1942.
The last automotive use of the Chrysler flathead inline-six was in 1960. It was replaced by the much more efficient OHV slant-6 the following year, which appeared in most Dodge trucks starting in 1961. The flathead remained in production until the early 1970s for industrial and agricultural use.

Displacement	Years	Horsepower	Applications	Bore	Stroke
	1924-1925	68	Chrysler B-70 Six
	1926	92	Chrysler Series E-80
	1927-1928	92	Chrysler Series 80
	1926	68	Chrysler Model G-70
	1927	68	Chrysler Series 70
	1930	75	Chrysler Series 70
	1930	68	Chrysler Series 66
	1931	68	Chrysler Series 66
	1927	54	Chrysler Series 60
	1928	54 60	Chrysler Series 62
	1929	55	DeSoto Series K
	1930	57	DeSoto Series K
	1932	n/a	Chrysler Richmond
	1933	n/a	Chrysler Richmond
	1930-1932	61	Dodge Series DD
	1933	70	Dodge Series DQ
	1930-1931	60	DeSoto Series CK
	1933	70 76	Plymouth PC/PCXX/PD
	1930	n/a	DeSoto Series CK
	1930	n/a	Dodge Series DD
	1931-1932	n/a	DeSoto Series SAX
	1933	n/a	Plymouth PC/PD/Chrysler Kew/Wimbledon
	1929	65 72	Chrysler Series 65
	1930	62	Chrysler Series 66
	1930-1931	62	Chrysler Series CJ
	1939	n/a	Plymouth P7/P8
	1939	n/a	Dodge Series D12/D13
	1933	75 81	Dodge Series DP
	1934	77	Dodge Series DT
	1934	77 82	Plymouth PE/PF/PFXX/PG Chrysler Wimbledon
	1935	82	Dodge Series DV/DV-6
	1935	82	Plymouth Model PJ Chrysler Wimbledon
	1936	82	Dodge Series D-3/D-4
	1936	82	Plymouth P1/P2 Chrysler Wimbledon
	1937	82	Dodge Series D6/D7
	1937	82 65	Plymouth P3/P4 Chrysler Kew/Wimbledon
	1937	70	Plymouth PT50
	1938	82	Dodge Series D9/D10
	1938	82 65 86	Plymouth P5/P6 Chrysler Kew/Wimbledon
	1938	70	Plymouth PT57
	1939	82	Dodge Series D12/D13
	1939	82 86	Plymouth P7/P8 Chrysler Kew/Wimbledon
	1939	70	Plymouth PT81
	1940	84 87	Plymouth P9/P10
	1940	79	Plymouth PT105
	1941	87 92	Plymouth P11/P12
	1941	82	Plymouth PT125
	1931	n/a	Dodge Series DH
	1931-1932	n/a	Chrysler CMX
	1932-1933	n/a	DeSoto SCX/Chrysler Mortlake
	1933	n/a	DeSoto SDX/Chrysler Wimbledon
	1933	n/a	Dodge Series DP Victory
	1934	n/a	Dodge Series DR Victory
	1934	n/a	Plymouth PE/PF Chrysler Kew/Wimbledon
	1935	n/a	Dodge Series DU Victory
	1935	n/a	Plymouth PJ Chrysler Kew
	1936	n/a	Dodge Series D-2 Victory
	1936	n/a	Plymouth P1/P2 Chrysler Kew
	1937	n/a	Plymouth P3/P4 Chrysler Kew
	1938	n/a	Plymouth P5/P6 Chrysler Kew
	1939	n/a	Plymouth P7/P8 Chrysler Kew
	1940	70	Plymouth P9
	1931-1932	67	DeSoto Series SA
	1928	58	Dodge Standard Six
	1929-1930	63	Dodge Series DA
	1931	68	Dodge Series DH
	1932	74	Dodge Series DH
	1931	78	Chrysler Series CM-6
	1932	78	Chrysler Series CM-6
	1932	75	DeSoto Series SC
	1932	79	Dodge Series DL
	1933	82	DeSoto S-All
	1934	82	Dodge Series DR/DRXX
	1934	87	Dodge Series DR /DS
	1935	87	Dodge Series DU
	1936	87	Dodge Series D-2
	1937	87	Dodge Series D-5
	1938	87	Dodge Series D8
	1939	87	Dodge Series D11
	1940	87	Dodge Series D14/D17 Dodge Series D15
	1941	91	Dodge Series D19 Dodge Series D20
	1942	95	Plymouth S-All
	1942	95	Dodge Series D23
	1946-1949	95	Plymouth S-All
	1949	97	Plymouth S-All
	1950	97	Plymouth S-All
	1951	97	Plymouth S-All
	1952	97	Plymouth S-All
	1953	100	Plymouth S-All
	1954	100	Plymouth S-All
	1940	84.25	Dodge Series D14/D15
	1940	n/a	Plymouth P9/P10
	1941	88	Dodge Series D20/D21
	1941	88	Plymouth P11/P12
	1942	95	Dodge Series D23
	1942	88	Plymouth P14
	1928	60	Dodge Senior Six
	1928	68	Dodge Senior Six
	1932	82	Chrysler Series CI Chrysler Kingston
	1933	83 89	Chrysler Series CO Chrysler Kingston
	1937	93	DeSoto Series S-3 Chrysler Richmond
	1937	93 100	Chrysler Series C-16
	1938	93 100	DeSoto Series S-5
	1939	93 100	DeSoto Series S-6
	1940	100 105	DeSoto Series S-7
	1941	100 105 110	DeSoto Series S-8 DeLuxe DeSoto Series S-8 Custom DeSoto Series S-8
	1942	105	Dodge Series D22
	1946-1949	102	Dodge S-All
	1949	103	Dodge S-All
	1950	103	Dodge S-All
	1951	103	Dodge S-All
	1952	103	Dodge S-All
	1953	103	Dodge S-D-46, D-47
	1954	110	Plymouth S-All
	1954	110	Dodge S-All I-6
	1955	117	Plymouth S-All I-6
	1955	123	Dodge S-Coronet I-6
	1956	125	Plymouth S-all exc Fury, Belvedere cvt
	1956	131	Plymouth O-all exc Fury, Belvedere cvt
	1956	131	Dodge S-Coronet I-6
	1957	132	Plymouth S-All exc Fury, Belvedere, cvt
	1957	138	Dodge S-Coronet I-6
	1958	132	Plymouth S-All exc Fury, Belvedere cvt
	1958	138	Dodge S-Coronet I-6
	1959	132	Plymouth S-Savoy, Belvedere, Suburban exc. Custom 9P, Fury, Sport Fury
	1959	138	Dodge S-Coronet I-6
	1942	115	DeSoto Series S-10
	1946-1949	109	DeSoto S-All
	1949	112	DeSoto S-All
	1950	112	DeSoto S-All
	1929	78	Dodge Series S
	1930	78	Dodge Series DB
	1934	100	DeSoto Series SE
	1934	93 100	Chrysler Series CA/CB
	1935	93	DeSoto Series SF
	1935	100	DeSoto Series SG
	1935	100	Chrysler O-C-6
	1935	93	Chrysler S-C-6
	1936	93	DeSoto Airstream Series S-1
	1936	100	DeSoto Airflow Series S-2
	1936	93 100	Chrysler Series C-7
	1938	95 102	Chrysler Series C-18
	1939	100 107	Chrysler Series C-22
	1940	108 112	Chrysler Royal/Windsor
	1941	108 112 115	Chrysler Royal Chrysler Windsor Chrysler Royal/Windsor
	1928	75 85	Chrysler Series 72
	1929	75 84	Chrysler Series 75
	1942	120	Chrysler Royal/Windsor
	1946-1949	114	Chrysler Royal/Windsor
	1949	116	Chrysler Royal/Windsor
	1950	116	Chrysler Royal/Windsor
	1951-1952	116	DeSoto Deluxe/Custom
	1951	116	Chrysler Windsor, Deluxe
	1953	116	DeSoto Powermaster
	1954	116	DeSoto Powermaster
	1952	119	Chrysler Windsor, Deluxe
	1953	119	Chrysler Windsor, Deluxe
	1954	119	Chrysler Windsor Deluxe
	1930-1932	93	Chrysler Series 70
	1930	93	Chrysler Series 77
	1928	100 112	Chrysler Imperial Series 80L
	1929-1930	100 112	Chrysler Imperial Series L-80

Straight-8

Displacement	Years	Horsepower	Applications	Bore	Stroke
	1930-1931	70	DeSoto Series CF
	1930-1932	75	Dodge Series DC
	1931-1932	77	DeSoto Series CF
	1931-1932	84	Dodge Series DG
	1931	80	Chrysler Series CD
	1931	88	Chrysler Series CD
	1933	90 98	Chrysler Series CT
	1935	105 110	Chrysler Series CZ
	1936	105 110	Chrysler Series C-8
	1937	110 115	Chrysler Series C-14
	1931	100	Chrysler DeLuxe CD Series
	1932	100	Chrysler Series CD
	1932	90 100	Dodge Series DK
	1933	100 94	Dodge Series DO
	1932	100	Chrysler Series CP
	1933	100 108	Chrysler Series CQ
	1934	122	Chrysler Series CU
	1938	110 122	Chrysler Series C-19 Dodge Custom Eight
	1934	130	Chrysler Series CV/CX
	1935	115 120	Chrysler Series C-1
	1935	130 138	Chrysler Series C-2/C-3
	1936	115	Chrysler Series C-9
	1936	130	Chrysler Series C-10/C-11
	1937	130 138	Chrysler Series C-15/C-17
	1938	130 138	Chrysler Series C-20
	1939	130	Chrysler Series C-23
	1939	132 138	Chrysler Series C-24
	1940	132 135 143	Chrysler C-27 Chrysler C-26 Chrysler C-26/C-27
	1941	137	Chrysler C-30
	1941	140	Chrysler C-30 /C-33
	1942	140	Chrysler C-36/C-37
	1946-1950	135	Chrysler Saratoga/New Yorker
	1931-1932	125	Chrysler Series CG
	1932	125	Chrysler Series CH/CL
	1933	125 135	Chrysler Series CL
	1934-1935	150	Chrysler Series CW

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