Chrysler Flathead engine

Chrysler Flathead engine

Manufacturer	Chrysler Corporation
Also called	Chrysler Sidevalve engine
Production	1932–1970s
Successor	Chrysler Slant-6 engine
Configuration	Side-valve
Cylinder block alloy	Cast iron
Cylinder head alloy	Cast iron
Fuel system	Carburetor
Fuel type	gasoline

The Chrysler Flathead engine is an automotive engine manufactured by the Chrysler Corporation.

Straight-4

Chrysler introduced a straight-4 derivative of their new Flathead straight-6 in 1926. Initially used by all Chrysler divisions, the straight-4 became Plymouth-only in 1929, lasting in production through 1932.

The original version displaced 185.8 cu in (3,044.7 cc) and produced 38 hp (28 kW). This was only produced in 1926, with displacement reduced to 170.3 cu in (2,790.7 cc) for 1927 through 1929. Power was initially rated the same but was upped to 45 hp (34 kW) during the 1928 model year.

After the introduction of the Plymouth brand in 1929, the base engine was enlarged to 175.4 cu in (2,874.3 cc) for 1930 with the power rating remaining the same. A larger 196 cu in (3,211.9 cc) version was also offered that year with 48 hp (36 kW). The engine was slightly revised for 1932 with a claimed displacement of 196.1 cu in (3,213.5 cc) and either 56 hp (42 kW) or 65 hp (48 kW).

Beginning in 1938, the 201 cu in (3,293.8 cc) inline 6 was used in Massey Harris's Model 101 (later known as the 101 Super). It continued to be used by Massey until 1940, when it was supplanted by the 217 cu in (3,556.0 cc). In 1940, Chrysler's 242 cu in (3,965.7 cc) straight six went into Massey's 201 Super, which lasted until 1942.

Displacement	Years	Horsepower	Applications
185.8 cu in (3,044.7 cc)	26	38	All S-Series 58
170.3 cu in (2,790.7 cc)	27	38	All S-Series 50
	28	38-45	All S-Series 52
	29	45	Plymouth S-Model Q
175.4 cu in (2,874.3 cc)	30	45	Plymouth S-U
196 cu in (3,211.9 cc)	30	48	Plymouth S-30-U
	31	48	Plymouth S-All
196.1 cu in (3,213.5 cc)	32	65	Plymouth S-PB
	32	56	Plymouth S-PA

Straight-6

Displacement	Years	Horsepower	Applications
201 cu in (3,293.8 cc)	24-25	68	All S-all
288 cu in (4,719.5 cc)	26	92	All S-Series E-80
288.6 cu in (4,729.3 cc)	27	92	All S-Series 80
218.6 cu in (3,582.2 cc)	26	68	All S-Series G-70
	27	68	All S-Series 70
	30	75	Chrysler S-70s built 1929
	30	68	Chrysler S-66s built 1930
	31	68	Chrysler S-66
180.2 cu in (2,952.9 cc)	27	54	All S-Series 60
	28	54/60	All S-Series 62
174.9 cu in (2,866.1 cc)	29	55	DeSoto S-All
	30	57	DeSoto S-K
175.4 cu in (2,874.3 cc)	29	45	Plymouth S-Model U
189.8 cu in (3,110.3 cc)	30	61	Dodge S-DD
	30	60	DeSoto S-CK
	31	61	Dodge S-DD
	31	60	DeSoto S-CK
	32	61	Dodge S-DD
	33	70	Plymouth S-All
195.5 cu in (3,203.7 cc)	29	65/72	Chrysler S-Series 65
195.6 cu in (3,205.3 cc)	30	65	Chrysler S-66s built 1929
	30	62	Chrysler S-CJ6
	31	62	Chrysler S-CJ-6
201.3 cu in (3,298.7 cc)	33	75	Dodge S-DP
	34	77	Plymouth S-All
	35	82	Plymouth S-All
	36	82	Plymouth S-All
	37	82	Plymouth S-All
	38	82	Plymouth S-All
	39	82	Plymouth S-All
	40	84	Plymouth S-All
	41	87	Plymouth S-All
205.3 cu in (3,364.3 cc)	31	67	DeSoto S-SA
	32	67	DeSoto S-SA
205.6 cu in (3,369.2 cc)	46-49	114	Chrysler S-Royal, Windsor, T&C six
208 cu in (3,408.5 cc)	29	63	Dodge S-Series DA
	29	58	Dodge S-Series J
	30	63	Dodge S-DA
211.5 cu in (3,465.9 cc)	31	68	Dodge S-DH
	32	74	Dodge S-DH
	32	75	DeSoto S-SC
217.8 cu in (3,569.1 cc)	31	78	Chrysler S-CM-6
	32	79	Dodge S-DL
	32	78	Chrysler S-CM-6
	33	82	DeSoto S-All
	34	87	Dodge S-All
	35	87	Dodge S-All
	36	87	Dodge S-All
	37	87	Dodge S-All
	38	87	Dodge S-All
	39	87	Dodge S-All
	40	87	Dodge S-All
	41	91	Dodge S-All
	42	95	Plymouth S-All
	46-49	95	Plymouth S-All
	49	97	Plymouth S-All
	50	97	Plymouth S-All
	51	97	Plymouth S-All
	52	97	Plymouth S-All
	53	100	Plymouth S-All
	54	100	Plymouth S-All (Early)
224 cu in (3,670.7 cc)	29	68	Dodge S-Series M
	32	82	Chrysler S-CI-6
	33	83/89	Chrysler S-CO
228.1 cu in (3,737.9 cc)	37	93	DeSoto S-All
	37	100	Chrysler O-C-16
	37	93	Chrysler S-C-16
	38	100	DeSoto O-All
	38	93	DeSoto S-All
	39	100	DeSoto O-All
	39	93	DeSoto S-All
	40	105	DeSoto O-All
	40	100	DeSoto S-All
	41	105	DeSoto S-All
230.2 cu in (3,772.3 cc)	42	105	Dodge S-All
	46-49	102	Dodge S-All
	49	103	Dodge S-All
	50	103	Dodge S-All
	51	103	Dodge S-All
	52	103	Dodge S-All
	53	103	Dodge S-D-46, D-47
	54	110	Plymouth S-All (Late)
	54	110	Dodge S-All I-6
	55	117	Plymouth S-All I-6
	55	123	Dodge S-Coronet I-6
	56	125	Plymouth S-all exc Fury, Belvedere cvt
	56	131	Plymouth O-all exc Fury, Belvedere cvt
	56	131	Dodge S-Coronet I-6
	57	132	Plymouth S-All exc Fury, Belvedere, cvt
	57	138	Dodge S-Coronet I-6
	58	132	Plymouth S-All exc Fury, Belvedere cvt
	58	138	Dodge S-Coronet I-6
	59	132	Plymouth S-Savoy, Belvedere, Suburban exc. Custom 9P, Fury, Sport Fury
	59	138	Dodge S-Coronet I-6
236.6 cu in (3,877.2 cc)	42	115	DeSoto S-All
	46-49	109	DeSoto S-All
	49	112	DeSoto S-All
	50	112	DeSoto S-All
241.5 cu in (3,957.5 cc)	30	78	Dodge S-DB
	34	100	DeSoto S-All
	34	100	Chrysler O-CA, CB
	34	93	Chrysler S-CA, CB
	35	100	DeSoto S-All
	35	100	Chrysler O-C-6
	35	93	Chrysler S-C-6
	36	100	DeSoto S-All
	36	100	Chrysler O-C-7
	36	93	Chrysler S-C-7
	38	102	Chrysler O-C-18
	38	95	Chrysler S-C-18
	39	107	Chrysler O-C-22
	39	100	Chrysler S-C-22
	40	112	Chrysler O-Royal, Windsor
	40	108	Chrysler S-Royal, Windsor
	41	115	Chrysler O-Royal, Windsor
	41	108/112	Chrysler S-Royal, Windsor
241.6 cu in (3,959.1 cc)	29	78	Dodge S-Series S
248.9 cu in (4,078.7 cc)	28	75/85	All S-Series 72
	29	75/84	Chrysler S-Series 75
250.6 cu in (4,106.6 cc)	42	120	Chrysler S-Royal, Windsor
	49	116	Chrysler S-Royal, Windsor
	50	116	Chrysler S-Royal, Windsor
	51	116	DeSoto S-All
	51	116	Chrysler S-Windsor
	52	116	DeSoto S-DeLuxe, Custom
	53	116	DeSoto S-Powermaster
	54	116	DeSoto S-Powermaster
264.5 cu in (4,334.4 cc)	52	119	Chrysler S-Windsor
	53	119	Chrysler S-Windsor
	54	119	Chrysler S-Windsor Deluxe
268.4 cu in (4,398.3 cc)	30	93	Chrysler S-77 & 70s built 1930
	31	93	Chrysler S-70
	32	93	Chrysler S-70
309.3 cu in (5,068.5 cc)	28	100/112	All S-Series 80 L
	29	100/112	Chrysler S-Series 80 L
	30	100	Chrysler S-Imperial

The last Chrysler Flathead inline six engine came out in 1959 for automobiles. It was replaced by the much more efficient overhead valve Slant-6 the following year and in most Dodge trucks starting in 1961. The flathead engine remained in production until the early 1970s for industrial and agricultural use.^{[citation needed]}

Straight-8

Displacement	Years	Horsepower	Applications
207.7 cu in (3,403.6 cc)	30	70	DeSoto S-CF
	31	70	DeSoto S-CF
220.7 cu in (3,616.6 cc)	30	75	Dodge S-DC
	31	75	Dodge S-DC
	31	77	DeSoto S-CF Second Series
	32	75	Dodge S-DC
	32	77	DeSoto S-CF Second Series
240.3 cu in (3,937.8 cc)	31	84	Dodge S-DG
	31	82	Chrysler S-CD-8s built 1930
	32	84	Dodge S-DG
260.8	31	90	Chrysler S-CD-8s built 1931
273.8 cu in (4,486.8 cc)	33	90/98	Chrysler S-CT
	35	110	Chrysler O-CZ
	35	105	Chrysler S-CZ
	36	110	Chrysler O-C-8
	36	105	Chrysler S-C-8
	37	115	Chrysler O-C-14
	37	110	Chrysler S-C-14
282.1 cu in (4,622.8 cc)	31	95	Chrysler S-DeLuxe Eight
	32	90	Dodge S-DK
	32	95	Chrysler S-CD
	33	92	Dodge S-DO
298.6 cu in (4,893.2 cc)	32	100	Chrysler S-CP-8
298.7 cu in (4,894.8 cc)	33	108/100	Chrysler S-CQ
	34	122	Chrysler S-CU
	38	122	Chrysler O-C-19
	38	110	Chrysler S-C-19
323.5 cu in (5,301.2 cc)	34	130	Chrysler S-CV, CX
	35	138	Chrysler O-C-2, C-3
	35	130	Chrysler S-C-2, C-3
	35	120	Chrysler O-C-1
	35	115	Chrysler S-C-1
	36	130	Chrysler S-C-10, C-11
	36	115	Chrysler S-C-9
	37	138	Chrysler O-C-17, C-15
	37	130	Chrysler S-C-17, C-15
	38	138	Chrysler O-C-20
	38	130	Chrysler S-C-20
	39	138	Chrysler O-C-24
	39	132	Chrysler S-C-24
	39	130	Chrysler S-C-23
	40	143	Chrysler O-Traveler, NY, Saratoga, Crown Imperial
	40	135	Chrysler S-Traveler, NY, Saratoga
	40	132	Chrysler S-Crown Imperial
	41	143	Chrysler S-Crown Imperial
	41	140	Chrysler O-Saratoga, NY
	41	137	Chrysler S-Saratoga, NY
	42	140	Chrysler S-others
	46-49	135	Chrysler S-others
	49	135	Chrysler S-others
	50	135	Chrysler S-others
384.8 cu in (6,305.7 cc)	31	125	Chrysler S-Imperial
	32	125	Chrysler S-CG, CH, CL
	33	135/125	Chrysler S-CL
	34	150	Chrysler S-CW
	35	150	Chrysler S-CW

See also

• List of Chrysler engines