Chrysler flathead engine

Chrysler Flathead engine
Chrysler Flathead engine
Overview
Manufacturer	Chrysler Corporation
Also called	Chrysler Sidevalve engine
Production	1924–1964
Layout
Configuration	Side-valve
Cylinder block material	Cast iron
Cylinder head material	Cast iron
Combustion
Fuel system	Carburetor
Fuel type	Gasoline
Chronology
Successor	Chrysler Slant-6 engine; Polyspheric V8;

The Chrysler flathead engine is a flathead automotive engine manufactured by the Chrysler Corporation from 1924 through the early 1960s. The flathead engine came in four-,six-, and eight-cylinder configurations and varying displacement, with both a cast iron and cast aluminum cylinder head. It was installed in Chrysler, DeSoto, Dodge and Plymouth branded vehicles.

Straight-4

Chrysler introduced a straight-four in 1926 when the Maxwell Motor Corporation was re-organised into the Chrysler Corporation in 1925.^[1] Initially used by Chrysler, the straight-four was fitted to Plymouth cars and Dodge light trucks beginning in 1929, lasting in production through 1933.

The original version displaced 185.8 cu in (3,044 cc) and produced 38 hp (28 kW). This was only produced in 1926, with displacement reduced to 170.3 cu in (2,791 cc) for 1927 and 1928. 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 has been subjected to a major redesign and enlarged to 175.4 cu in (2,874.3 cc) with the power rating remaining the same. It also equipped Dodge light trucks in 1929–1930. It was enlarged again to 196.1 cu in (3,213 cc) in 1930 with 48 hp (36 kW). The engine was revised for 1931 with 56 hp (42 kW) and 1932 with 65 hp (48 kW) for Plymouth only, Dodge continued with the 48 hp (36 kW) 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 reduced further, bringing the tax horsepower rating to just beneath 15.5.

Chrysler did not offer a four-cylinder engine again until 1981 with the Chrysler 2.2 & 2.5 engine used in the Chrysler K platform.

Displacement	Year(s)	Horsepower	Applications	Bore	Stroke
186 cu in (3,044 cc)	1926	38	Chrysler model F-58	3+5⁄8 in (92.1 mm)	4+1⁄2 in (114.3 mm)
170 cu in (2,791 cc)	1927	38	Chrysler Series 50		4+1⁄8 in (104.8 mm)
	1928	38-45	Chrysler Series 52
	1928	45	Plymouth Model Q
175 cu in (2,875 cc)	1929	45	Plymouth U		4+1⁄4 in (108.0 mm)
	1929	45	Dodge 1/2 Ton
	1930	45	Dodge U1-A/B/C
196 cu in (3,213 cc)	1930	48	Plymouth 30U		4+3⁄4 in (120.7 mm)
	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
	1932	65	Dodge DM (export model)
	1933	48	Dodge UF10, UG20/21
146 cu in (2,388 cc)	1931	n/a	Plymouth PAX (export model, 89 built)^[2]	3+1⁄8 in (79.4 mm)
144 cu in (2,364 cc)	1932	n/a	Plymouth PBX (export model, 58 built)^[2]	3+7⁄64 in (79.0 mm)

Straight-6

The first six-cylinders was the B-Model (seven main bearings) and introduced in 1924 with the first Chrysler Corporation production, the B70.^[1] An upscale version designated E-Model equipped the new Chrysler Imperial E80 in 1926, and a downscale one named H-Model followed in 1927 (Chrysler Series 70). After the purchase of Dodge Brothers Inc. in 1928, Chrysler Corporation had five straight-6s in production with the addition of the Victory and Senior Dodge Brothers engines.^[1]

So, with the introduction of the new Desoto brand in 1929, came a new and cheaper to product six cylinders, the K-Model (four main bearings, deep skirts).^[1] By mid-1930, it partially replaced the previous engines in varying displacements on passenger cars, in conjunction with an all-new straight-8 block. Only the Imperial's engine remains in production for the Dodge Trucks^[1] 2-ton Models F-40 & K-50, 3-ton models F-60 & K-70, 2 & 3-ton Special, buses from 1930 to 1934-35. To replace these two engines, a new and very large six cylinders was launched in late 1936 (331 cu. in.). The 1956 C-3 Series was the last to use this big straight-6 (413 cu. in.).

In 1932, the Ford's V8 flathead launch shook up the market. The demand for larger engines was even for entry-level brands. A new straight-6 for Plymouth (PC/PD) and Dodge (DP/DQ) came in production in 1933 (shallow skirt, known as the "23 in block", with a head desk length of 580 mm), followed by a larger variant for Desoto (S3) and Chrysler Royal (C16) in 1937 ("25 in block" – 640 mm), marking the K-Model end. 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.^[3]

Beginning in 1938, the 201 cu in (3,299 cc) inline-six was used in Massey Harris's Model 101 tractor (later known as the 101 Super). It continued to be used by Massey until 1940, when it was supplanted by the 218 cu in (3,568 cc).^[4] In 1940, Chrysler's 242 cu in (3,966 cc) straight six went into Massey's 201 Super, which lasted until 1942.^[4]

During World War II, the 251 cu in (4,107 cc) flathead six was used as the basis for the Chrysler A57 multibank tank engine.^[5]

The last automotive use of the Chrysler flathead inline-six was in 1968. It was replaced by the much more efficient OHV Slant-6 released in 1960, which appeared in most Dodge trucks starting in 1961. According to the Standard Catalog of American Light-Duty Trucks, the Dodge Power Wagon WM300 used the 251 inline flathead six until 1968, after which the Dodge WM300 was dropped for the 1969 production year. The flathead remained in production until the early 1970s for industrial and agricultural use.^{[citation needed]}

Displacement	Years	Horsepower	Applications	Bore	Stroke
201 cu in (3,301 cc)	1924-1925	68	Chrysler B-70 Six	3 in (76.2 mm)	4+3⁄4 in (120.7 mm)
289 cu in (4,730 cc)	1926	92	Chrysler Series E-80	3+1⁄2 in (88.9 mm)	5 in (127.0 mm)
289 cu in (4,730 cc)	1927-1928	92	Chrysler Series 80	3+1⁄2 in (88.9 mm)	5 in (127.0 mm)
219 cu in (3,582 cc)	1926	68	Chrysler Model G-70	3+1⁄8 in (79.4 mm)	4+3⁄4 in (120.7 mm)
	1927	68	Chrysler Series 70
	1930	75	Chrysler Series 70 (early)
	1930	68	Chrysler Series 66 (late)
	1931	68	Chrysler Series 66
180 cu in (2,954 cc)	1927	54	Chrysler Series 60	3 in (76.2 mm)	4+1⁄4 in (108.0 mm)
180 cu in (2,954 cc)	1928	54 (std.) 60 (opt.)	Chrysler Series 62		4+1⁄4 in (108.0 mm)
175 cu in (2,867 cc)	1929	55	DeSoto Series K		4+1⁄8 in (104.8 mm)
	1930	57	DeSoto Series K
	1932	n/a	Chrysler Richmond (CIX; UK only)
	1933	n/a	Chrysler Richmond (COX; UK only)
190 cu in (3,111 cc)	1930-1932	61	Dodge Series DD	3+1⁄8 in (79.4 mm)
	1933	70	Dodge Series DQ (CDN/export)
	1930-1931	60	DeSoto Series CK
	1933	70 (std.) 76 (opt.)	Plymouth PC/PCXX/PD
161 cu in (2,633 cc)	1930	n/a	DeSoto Series CK (UK)	2+7⁄8 in (73.0 mm)
	1930	n/a	Dodge Series DD (UK)^[6]
	1931-1932	n/a	DeSoto Series SAX (export, late cars sold as "Chrysler Light Six")^[7]
	1933	n/a	Plymouth PCX/PCXXPDX/Chrysler Kew/Wimbledon (export models, 651 built)^[8]
196 cu in (3,205 cc)	1929	65 (std.) 72 (opt.)	Chrysler Series 65	3+1⁄8 in (79.4 mm)	4+1⁄4 in (108.0 mm)
	1930	62	Chrysler Series 66 (until Feb. 1930, longer in UK)
	1930-1931	62	Chrysler Series CJ
201 cu in (3,299 cc)	1938	n/a	Plymouth P5/P6 (Canada-made, late introduction)	3+3⁄8 in (85.7 mm)	3+3⁄4 in (95.3 mm)
	1938	n/a	Dodge Series D9/D10 (Canada-made, late introduction)
	1939	n/a	Plymouth P7/P8 (Canada-made)
	1939	n/a	Dodge Series D12/D13 (Canada-made)
201 cu in (3,299 cc)	1933	75 (std.) 81 (opt.)	Dodge Series DP	3+1⁄8 in (79.4 mm)	4+3⁄8 in (111.1 mm)
	1934	77	Dodge Series DT (CDN/export)
	1934	77 (std.) 82 (opt.)	Plymouth PE/PF/PFXX/PG Chrysler Wimbledon (UK)
	1935	82	Dodge Series DV/DV-6 (CDN/export)
	1935	82	Plymouth Model PJ Chrysler Wimbledon (UK)
	1936	82	Dodge Series D-3/D-4 (CDN/export)
	1936	82	Plymouth P1/P2 Chrysler Wimbledon (UK)
	1937	82	Dodge Series D6/D7 (CDN/export)
		82 (std.) 65 (Economy)	Plymouth P3/P4 Chrysler Kew/Wimbledon (UK)
		70	Plymouth PT50 (commercials)
	1938	82	Dodge Series D9/D10 (CDN/export)
		82 (std.) 65 (Economy) 86 (opt.)	Plymouth P5/P6 Chrysler Kew/Wimbledon (UK)
		70	Plymouth PT57 (commercials)
	1939	82	Dodge Series D12 (export)
		82 (std.) 86 (opt.)	Plymouth P7/P8 Chrysler Kew/Wimbledon (UK)
		70	Plymouth PT81 (commercials)
	1940	84 (std.) 87 (opt.)	Plymouth P9/P10
	1940	79	Plymouth PT105 (commercials)
	1941	87 (std.) 92 (opt.)	Plymouth P11/P12
	1941	82	Plymouth PT125 (commercials)
170 cu in (2,793 cc)	1931	n/a	Dodge Series DH (UK)^[6]	2+7⁄8 in (73.0 mm)
	1931-1932	n/a	Chrysler CMX (UK, from Aug. 1931)
	1932-1933	n/a	DeSoto SCX/Chrysler Mortlake (UK)
	1933	n/a	DeSoto SDX/Chrysler Wimbledon (UK)
	1933	n/a	Dodge Series DP Victory (UK)
	1934	n/a	Dodge Series DR Victory (UK)
	1934	n/a	Plymouth PEX/PFX (export models, 1529 built)^[9] Chrysler Kew/Wimbledon (UK)
	1935	n/a	Dodge Series DUX Victory (UK)
	1935	n/a	Plymouth PJX (export models, 754 built) Chrysler Kew (UK)
	1936	n/a	Dodge Series D2X Victory (UK)
	1936	n/a	Plymouth P1X/P2X (export models, 661 built with P2X engine code, plus 35 Dodge D-3/D-4) Chrysler Kew (UK)
	1937	n/a	Desoto Series S3X (export models)
	1937	n/a	Dodge Series D5X (UK)
	1937	n/a	Plymouth P3X/P4X (export models, 657 built with P4X engine code, plus 39 Dodge D6X) Chrysler Kew (UK)
	1938	n/a	Desoto Series S5X (export models)
	1938	n/a	Dodge Series D8X (export models)
	1938	n/a	Plymouth P5X/P6X (export models, 333 built with P6X engine code) 81 Dodge D9X) Chrysler Kew (UK)
	1939	n/a	Desoto Series S6X (export models)
	1939	n/a	Dodge Series D11X (export model, unknown production)
	1939	n/a	Plymouth P7/P8 (export models, 273 built plus 38 Dodge D12X and some DeSoto-badged SP7X/SP8X) Chrysler Kew (UK)
	1940	n/a	Dodge Series D14X (export models none built)
	1940	70	Plymouth P9X/P10X (export models, one built/none built)
	1941	n/a	Dodge Series D19X (export models, unknown production)
	1941	n/a	Plymouth P11X/P12X (export models, unknown production)
208 cu in (3,409 cc)	1927-1928	58	Dodge Standard Six (140/141/J) Dodge Victory Six (130/131/M)	3+3⁄8 in (85.7 mm)	3+7⁄8 in (98.4 mm)
208 cu in (3,409 cc)	1929-1930	63	Dodge Series DA	3+3⁄8 in (85.7 mm)	3+7⁄8 in (98.4 mm)
212 cu in (3,467 cc)	1931	68	Dodge Series DH	3+1⁄4 in (82.6 mm)	4+1⁄4 in (108.0 mm)
212 cu in (3,467 cc)	1932	74	Dodge Series DH		4+1⁄4 in (108.0 mm)
218 cu in (3,568 cc)	1931	78	Chrysler Series CM-6		4+3⁄8 in (111.1 mm)
	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 (opt.)/DS (std.)
	1935	87	Dodge Series DU
	1936	87	Dodge Series D2
	1937	87	Dodge Series D5
	1938	87	Dodge Series D8
	1939	87	Dodge Series D11/D11S
	1940	87	Dodge Series D14/D17 Dodge Series D15 (US-made for export)
	1941	91	Dodge Series D19 Dodge Series D20 (US-made for export)
	1942	95	Plymouth S-All
	1942	95	Dodge Series D23 (US-made for export)
	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 (Early)
218 cu in (3,573 cc)	1939	n/a	Dodge D11 (Canada-made)	3+3⁄8 in (85.7 mm)	4+1⁄16 in (103.2 mm)
	1940	84.25	Dodge Series D14/D15 (Canada-made)
	1940	n/a	Plymouth P9/P10 (Canada-made)
	1941	88	Dodge Series D20/D21 (Canada-made)
	1941	88	Plymouth P11/P12 (Canada-made)
	1942	88	Dodge Series D23 (Canada-made)
	1942	88	Plymouth P14 (Canada-made)
	1946-early 1949	95	Plymouth P15S & P15C (Canada-made) Dodge D25S & D25S (Canada-made)
	1949	97	Plymouth P17 & P18 (Canada-made) Dodge D31 & D32 (Canada-made)
	1950	97	Plymouth P22 & P23 (Canada-made) Dodge D35 & D36 (Canada-made)
	1951-1952	97	Plymouth P22 & P23 (Canada-made) Dodge D39 & D40 (Canada-made)
	1953	97	Plymouth P24-1, P24-2 & P24-3 (Canada-made) Dodge D49-1 & D49-2 (Canada-made)
224 cu in (3,671 cc)	1927-1928	60	Dodge Senior Six (Series 2249)	3+1⁄4 in (82.6 mm)	4+1⁄2 in (114.3 mm)
	1928	68	Dodge Senior Six (Series 2251/2252)
	1932	82	Chrysler Series CI Chrysler Kingston (UK)
	1933	83 (std.) 89 (opt.)	Chrysler Series CO Chrysler Kingston (UK)
228 cu in (3,738 cc)	1937	93	DeSoto Series S-3 Chrysler Richmond (UK; 1937–1938)	3+3⁄8 in (85.7 mm)	4+1⁄4 in (108.0 mm)
	1937	93 (std.) 100 (opt.)	Chrysler Series C-16
	1938	93 (std.) 100 (opt.)	DeSoto Series S-5
	1939	93 (std.) 100 (opt.)	DeSoto Series S-6
	1940	100 (std.) 105 (opt.)	DeSoto Series S-7 DeSoto Series S-7S (Canada-made)
	1941	100 105 110	DeSoto Series S-8 DeLuxe DeSoto Series S-8 Custom DeSoto Series S-8 (optional)
	1942	105	Dodge D22C (Canada-made)
	1946-Early 1949	105	Dodge D24 (Canada-made)
	1949	105	Dodge D30 Custom (Canada-made)
	1950	105	Dodge D34 Custom (Canada-made)
	1951-1952	105	Dodge D42 Coronet (Canada-made)
	1953	115 101 (bhp)	Dodge D43-1, D43-2 & D43-3 (Canada-made w/ Hy-Drive) Dodge D43 (Australia-built)
	1954	115	Plymouth P25-1, P25-2 & P25-3 (Canada-made) Dodge D49-1 & D49-2 (Canada made)
	1955	115	Plymouth P26-1, P26-2 & P26-3 (Canada-made, w/ manual transmission) Dodge D54-1, D54-2 & D54-4 (Canada-made, w/ manual transmission)
230 cu in (3,772 cc)	1942	105	Dodge Series D22	3+1⁄4 in (82.6 mm)	4+5⁄8 in (117.5 mm)
	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 (from February 26^[10])
	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
	1957-1958	115	Chrysler Royal/Chrysler Plainsman AP1 (AUS-made)
	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
237 cu in (3,878 cc)	1942	115	DeSoto Series S-10	3+7⁄16 in (87.3 mm)	4+1⁄4 in (108.0 mm)
	1946-1949	109	DeSoto S-All
	1949	112	DeSoto S-All
	1950	112	DeSoto S-All
	1951	112	DeSoto S-All
242 cu in (3,958 cc)	1929	78	Dodge Series S	3+3⁄8 in (85.7 mm)	4+1⁄2 in (114.3 mm)
	1929-1930	78	Dodge Series DB
	1934	100	DeSoto Series SE (aka Chrysler CY/Croydon, until 1936 in UK)
	1934	93 (std.) 100 (opt.)	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 (std.) 100 (opt.)	Chrysler Series C-7
	1938	95 (std.) 102 (opt.)	Chrysler Series C-18
	1939	100 (std.) 107 (opt.)	Chrysler Series C-22
	1940	108 (std.) 112 (opt.)	Chrysler Royal/Windsor
	1941	108 112 115 (opt.)	Chrysler Royal Chrysler Windsor Chrysler Royal/Windsor
249 cu in (4,078 cc)	1928	75 (std.) 85 (opt.)	Chrysler Series 72	3+1⁄4 in (82.6 mm)	5 in (127.0 mm)
249 cu in (4,078 cc)	1929	75 (std.) 84 (opt.)	Chrysler Series 75	3+1⁄4 in (82.6 mm)	5 in (127.0 mm)
251 cu in (4,106 cc)	1942	120	Chrysler Royal/Windsor (C-34)	3+7⁄16 in (87.3 mm)	4+1⁄2 in (114.3 mm)
	1946-1949	114	Chrysler Royal/Windsor (C38)
	1949	116	Chrysler Royal/Windsor (C45)
	1950	116	Chrysler Royal/Windsor (C48)
	1951-1952	116	DeSoto Deluxe/Custom (S15)
	1951	116	Chrysler Windsor, Deluxe (C51)
	1953	116	DeSoto Powermaster (S18)
	1954	116	DeSoto Powermaster (S20)
	1957-1958	117	Chrysler Royal/Chrysler Plainsman AP1 (AUS-made)
	1958-1959	117	Chrysler Plainsman AP2 (AUS-made)
	1958-1960	117	Chrysler Royal/Chrysler Wayfarer AP2 (AUS-made)
	1960-1961	117	Chrysler Wayfarer AP3 (AUS-made)
	1960-1964	117	Chrysler Royal AP3 (AUS-made)
264.5 cu in (4,334 cc)	1952	119	Chrysler Windsor, Deluxe (C51)	3+7⁄16 in (87.3 mm)	4+3⁄4 in (120.7 mm)
	1953		Chrysler Windsor, Deluxe (C60)
	1954		Chrysler Windsor Deluxe (C62)
268 cu in (4,398 cc)	1930-1932	93	Chrysler Series 70	3+3⁄8 in (85.7 mm)	5 in (127.0 mm)
268 cu in (4,398 cc)	1930	93	Chrysler Series 77	3+3⁄8 in (85.7 mm)
289 cu in (4,730 cc)	1926	92	Chrysler Imperial Series E-80	3+1⁄2 in (88.9 mm)
289 cu in (4,730 cc)	1927	92	Chrysler Imperial Series 80	3+1⁄2 in (88.9 mm)
310 cu in (5,074 cc)	1928	100 (std.) 112 (opt.)	Chrysler Imperial Series 80L	3+5⁄8 in (92.1 mm)
310 cu in (5,074 cc)	1929-1930	100 (std.) 112 (opt.)	Chrysler Imperial Series L-80	3+5⁄8 in (92.1 mm)
331 cu in (5,430 cc)	1937-1940	100	Dodge ML/RL-50/53, Dodge MK/RK-60/63, Dodge RX-70/71, Dodge DB8, Dodge VL/VLA-50, Dodge VK/VKA-60/63	3+3⁄4 in (95.3 mm)	5 in (127.0 mm)
	1940-1942	110	Dodge DC8, DD-8 Dodge WK, WL
	1946-1953	128 (std.)	Dodge WK/WR, Dodge B-1-T/TA/V/VA, Dodge B-2/3/4-T/TL/TA/TAL, Dodge B-2/3/4-V/VL/VA/VAL, Dodge B-1/2/3-VX, Dodge DE/DF/DG-8/9, Dodge DH-9/10
	1951-1953	145 (2 carb. opt.)	Dodge B-2/3/4-T/TL/TA/TAL, Dodge B-2/3/4-V/VL/VA/VAL, Dodge B-1/2/3-VX, Dodge DG-8/9, Dodge DH-9/10
282 cu in (4,615 cc)	1946-1947	115	Dodge WJ		4+1⁄4 in (108.0 mm)
282 cu in (4,615 cc)	1948-1949	115	Dodge B-1-R/RA/RS, Dodge DE-7		4+1⁄4 in (108.0 mm)
306 cu in (5,022 cc)	1950-1953	122 (std.)	Dodge B-2/3/4-R/RL/RA/RAL/RS, Dodge DF/DG-7, DH-8		4+5⁄16 in (109.5 mm)
306 cu in (5,022 cc)	1951-1953	137 (2 carb. opt.)	Dodge B-2/3/4-R/RL/RA/RAL/RS, Dodge DG-7, DH-8		4+5⁄16 in (109.5 mm)
377 cu in (6,178 cc)	1950-1953	154 std. w/2 carb.	Dodge B-2/3/4-Y/YA/YX	4 in (101.6 mm)	5 in (127.0 mm)
413 cu in (6,771 cc)	1954-1956	171 std. w/2 carb.	Dodge C-1-Y/YA/YX, Dodge DH-11/12, Dodge C-3-Y6/YL6/YA6/YAL6/YX6/YXL6	4+1⁄16 in (103.2 mm)	5+5⁄16 in (134.9 mm)

Straight-8

The new in-line 8-cylinder engine is largely based on the six-cylinder engine that appeared on the Desoto Model K. It has five main levels, the central one being wider.^[1] When the engineers had to rebore the cylinders to 3-1/2 inches, the space between each pair of cylinders was modified. This applies to all blocks with the same bore.

In the case of the Imperial (CG, CH) then Custom imperial (CL, CW), a new and unique straight-8 engine was created with 9 main bearings and equipped with a two-barrel downdraft carburetor. From the CW model, the cylinder head is made of aluminium. It also powered the Dodge Trucks G-80 models (1931-1934) and Fargo buses (1930-1932).^[1]

Displacement	Years	Horsepower	Applications	Bore	Stroke
208 cu in (3,404 cc)	1930-1931	70	DeSoto Series CF	2+7⁄8 in (73.0 mm)	4 in (101.6 mm)
221 cu in (3,617 cc)	1930-1932	75	Dodge Series DC (discontinued September 1931)		4+1⁄4 in (108.0 mm)
221 cu in (3,617 cc)	1931-1932	77	DeSoto Series CF
240 cu in (3,938 cc)	1931-1932	84	Dodge Series DG	3 in (76.2 mm)
240 cu in (3,938 cc)	1931	80	Chrysler Series CD (until January 1931)	3 in (76.2 mm)
261 cu in (4,273 cc)	1931	88	Chrysler Series CD (from January 1931)	3+1⁄8 in (79.4 mm)
274 cu in (4,486 cc)	1933	90 (std.) 98 (opt.)	Chrysler Series CT	3+1⁄4 in (82.6 mm)	4+1⁄8 in (104.8 mm)
	1935	105 (std.) 110 (opt.)	Chrysler Series CZ
	1936	105 (std.) 110 (opt.)	Chrysler Series C-8
	1937	110 (std.) 115 (opt.)	Chrysler Imperial Series C-14
282 cu in (4,622 cc)	1931	100	Chrysler DeLuxe CD Series		4+1⁄4 in (108.0 mm)
	1932	100	Chrysler Series CD
	1932	90 (std.) 100 (opt.)	Dodge Series DK
	1933	100 (std.) 94 (opt.)	Dodge Series DO
299 cu in (4,894 cc)	1932	100	Chrysler Series CP (Chrysler Hurlingham in the UK)		4+1⁄2 in (114.3 mm)
	1933	100 (std.) 108 (opt.)	Chrysler Imperial Series CQ
	1934	122	Chrysler Series CU
	1938	110 (std.) 122 (opt.)	Chrysler Series C-19 Dodge Custom Eight (UK)^[11]
324 cu in (5,302 cc)	1934	130	Chrysler Imperial/Custom Imperial Series CV/CX		4+7⁄8 in (123.8 mm)
	1935	115 (std.) 120 (opt.)	Chrysler Series C-1
	1935	130 (std.) 138 (opt.)	Chrysler Imperial Series C-2/C-3
	1936	115	Chrysler Series C-9
	1936	130	Chrysler Imperial Series C-10/C-11
	1937	130 (std.) 138 (opt.)	Chrysler Imperial Custom/Airflow Series C-15/C-17
	1938	130 (std.) 138 (opt.)	Chrysler Custom Imperial Series C-20
	1939	130	Chrysler Series C-23
	1939	132 (std.) 138 (opt.)	Chrysler Series C-24
	1940	132 135 143 (opt.)	Chrysler C-27 Chrysler C-26 Chrysler C-26/C-27
	1941	137	Chrysler C-30
	1941	140	Chrysler C-30 (opt.)/C-33
	1942	140	Chrysler C-36/C-37
	1946-1950	135	Chrysler Saratoga/New Yorker
385 cu in (6,306 cc)	1931-1932	125	Chrysler Series CG	3+1⁄2 in (88.9 mm)	5 in (127.0 mm)
	1932	125	Chrysler Imperial/Custom Imperial CH/CL
	1933	125 (std.) 135 (opt.)	Chrysler Custom Imperial CL
	1934-1935	150	Chrysler Custom Imperial Series CW

References

^ ^a ^b ^c ^d ^e ^f ^g Weertman, Willem L. Chrysler Engines, 1922-1998. Warrendale, PA: SAE International. ISBN 978-0-7680-1642-0.
^ ^a ^b Lee, John (1990). Standard Catalog of Chrysler, 1924-1990. Iola, WI: Krause Publications, Inc. p. 367. ISBN 0-87341-142-0.
^ Lee, p. 375
^ ^a ^b Pripps, Robert N. (2001). The big book of Massey tractors. Vancouver: Raincoast Books. ISBN 1-55192-423-4. OCLC 46991918.
^ Berndt, Thomas (1993). Standard Catalog of U.S. Military Vehicles. Krause Publications. p. 193. ISBN 0-87341-223-0.
^ ^a ^b Sedgwick, Michael; Gillies, Mark (1989). A-Z of Cars of the 1930s. Bideford, Devon, UK: Bay View Books. p. 70. ISBN 1-870979-38-9.
^ Sedgwick, p. 69
^ Lee, p. 368
^ Lee, p. 370
^ Zavitz, R. Perry (1990). "The Postwar Plymouths Changing Personalities From Staid to Flashy". In Lee, John (ed.). Standard Catalog of Chrysler, 1924-1990. Iola, WI: Krause Publications, Inc. p. 119. ISBN 0-87341-142-0.
^ Sedgwick, p. 72

[Weertman-1] ^ ^a ^b ^c ^d ^e ^f ^g Weertman, Willem L. Chrysler Engines, 1922-1998. Warrendale, PA: SAE International. ISBN 978-0-7680-1642-0.

[chrysler367-2] Lee, John (1990). Standard Catalog of Chrysler, 1924-1990. Iola, WI: Krause Publications, Inc. p. 367. ISBN 0-87341-142-0.

[chrysler375-3] Lee, p. 375

[Pripps-4] Pripps, Robert N. (2001). The big book of Massey tractors. Vancouver: Raincoast Books. ISBN 1-55192-423-4. OCLC 46991918.

[Berndt193-5] Berndt, Thomas (1993). Standard Catalog of U.S. Military Vehicles. Krause Publications. p. 193. ISBN 0-87341-223-0.

[1930s_Cars-6] Sedgwick, Michael; Gillies, Mark (1989). A-Z of Cars of the 1930s. Bideford, Devon, UK: Bay View Books. p. 70. ISBN 1-870979-38-9.

[1930sp69-7] Sedgwick, p. 69

[chrysler368-8] Lee, p. 368

[chrysler370-9] Lee, p. 370

[RPZ1-10] Zavitz, R. Perry (1990). "The Postwar Plymouths Changing Personalities From Staid to Flashy". In Lee, John (ed.). Standard Catalog of Chrysler, 1924-1990. Iola, WI: Krause Publications, Inc. p. 119. ISBN 0-87341-142-0.

[1930sp72-11] Sedgwick, p. 72

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

Straight-4

Straight-6

Straight-8

See also

References