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Indian Motorcycle Serial Numbers, Model Data & Specs 1901-1953

[ Decoding Tables
 01-08| 09-25| 26-31| 32-50| 50-53

  | Eng# Suffixes | Frame #s | Production #s | Notes | Revisions]
Version 07.07108, last updated 17-Jun-2008
date format  = day/month/year, eg 1/11/31 = 1st Nov 1931


updated 06/17/08
a collaborative

Use Ctrl+F to 'Find', use first 3 digits only for serial searches

w.i.p by Greg Cooney
   ****** Bore and Stroke (BS) Data current; under development, use as guide only for the time being ******
Year Model Eng.Number Cyls. H.P Bore Stroke Frame Number Notes
1953 353 CS61001-CS62500+ 2     CS61001-CS62500+ last batch of 53's where a large sequence of serials were skipped
1953 353 CS6501-CS6999 2     CS6501-CS6999 'Chief' 53, serials above 6500  accepted as 53 if registration supports.
1952 352 CS6001-CS6500 2     CS6001-CS6500 'Chief' 52,  up to 6500 whether '52 or '53 may depend on registration?
1952 ? BB1001T- 2     B1001T- 'Warrior TT', last model year
1952 ? CS4001- 2     CS4001- 'Warrior', last model year, Warrior Patrols (3 wheeler for Police/FD)
1951 351 C4001-C4500 2     C4001-C4500 'Chief' 80ci, the last of the eighty's without yr confusion!
1951 651? FEA101-? 2     FEA101-? ''Dispatch Tow' Scout, NYC Fire Dept Only?, note 14
1951 ? B1001T- 2     B1001T- 'Warrior TT', frame sequence continues thru '52
1951 ? B101- 2     B101- 'Warrior'
1950 350 C2001-C2500 2     C2001-C2500 'Chief' 80ci, 2nd series, #'s changed, C2441-C2500 to PDNYC Police
1950 350 CEJ1001-CEJ1500 2     3501001-3501500 'Chief' 80ci (1320cc), first year for  telescopic forks, 1st series
1950 ? BEJ1001- 2     2501001T- 'Warrior TT', 30.50ci (500cc)
1950 ? BEJ101- 2     250101- 'Warrior', 30.50ci (500cc)
1950 250 BBEJ1001- 2     22501001- Scout', last model year
1950 150 AAEJ1001- 1     11501001- Arrow', last model year
1949 349 CDI1001- 2     3491001- Chief, very limited production, serials inflated
1949 249 BDI101- 2     249101- Scout', 26ci, (440cc), first vertical twin
1949 149 ADI101- 1     149101- Arrow', 13ci, (220cc), first vertical single
1948 348 CDH101- 2     348101- Chief', new frame, new oil pump etc
1948 648 FDH101-150 2     648101-150 45" Daytona 'big base' Scout.  note 13
1947 347 CDG101- 2     347101- 'Chief', no other models
1946 346 CDF101- 2     346101- 'Chief', new girder forks, no other models
1945 345 CDE101- 2     345101- 'Chief' limited production,
1944 344 CDD101- 2     344101- 'Chief', no other models, all military?
1943 343 CDC101- 2     343101- 'Chief', very limited civilian production, last of 741's, high serials
1942 442 DDB101- 4     442101- Indian 4, the last year of the 4ours..
1942 342 CDB101- 2     342101- 'Chief', 74ci
1942 642 FDB101- 2     642101- 45" 'Sport Scout', last year of the SS/SSDT, Daytona in '48
1942 542 EDB101- 2     542101- 30.50ci 'Junior Scout'
1941 441 DDA101- 4     441101- Indian 4, 78ci
1941 341 CDA101- 2     341101- 'Chief', 74ci
1941 841 HDA101- 2     841101- Military, 841, 45ci transverse, shaft drive
1941 641 FDA101- 2     641101- 45" 'Sport Scout' and DT's
1941 741 GDA101- 2     741101- Military 741(b) lightweight 30.50ci note 6
1941 541 EDA101- 2     541101- 30.50ci 'Junior Scout'
1940 440 DDO101- 4     440101- Indian 4, 78ci
1940 340 CAV101- 2     CAV101- CAV=Continental Army Vehicle (aka Military Chief, Canadian)
1940 340 CDO101- 2     340101- 'Chief', incl Military, except Canada
1940 640 FDO101- 2     640101- 45" 'Sport Scout'  and Military 640 Scouts note 6
1940 540 EDO101- 2     540101- 30.50ci 'Scout Pony' renamed 'Thirty-Fifty'
1939 439 DCI101- 4     439101- Indian 4
1939 339 CCI101- 2     339101- 'Chief' 74ci
1939 639 FCI101- 2     639101- 45" 'Sport Scout' and Dispatch Tows (DT)
1939 539 ECI101- 2     539101- 30.50ci 'Junior Scout'
1938 438 DCH101- 4     438101- Indian 4, 78ci
1938 338 CCH101- 2     338101- 'Chief' 74ci
1938 638 FCH101- 2     638101- 45" 'Sport Scout' and Dispatch Tows
1938 538 ECH101- 2     538101- 30.50ci 'Junior Scout'
1937 437 DCG101- 4     437101- Indian 4, 78ci
1937 337 CCG101- 2     337101- 'Chief' 74ci
1937 637 FCG101- 2     637101- 45" 'Sport Scout' and Dispatch Tows
1937 237 BCG101- 2     237101- 45" Std 'Scout' last model year
1937 537 ECG101- 2     537101- 30.50ci 'Junior Scout' renamed 'Scout Pony'
1936 436 DCF101- 4     436101- Indian 4, 78ci
1936 336 CCF101- 2     336101- 'Chief' ,74ci
1936 636 FCF101- 2     636101- 45" 'Sport Scout' and Dispatch Tows
1936 236 BCF101- 2     236101- 45" Std 'Scout'
1936 536 ECF101- 2     536101- 30.50ci 'Junior Scout'
1935 435 DCE101- 4     435101- Indian 4, 78ci
1935 335 CCE101- 2     335101- 'Chief' 74ci
1935 635 FCE101- 2     635101- 45" 'Sport Scout' and Dispatch Tows note 14
1935 235 BCE101- 2     235101- 45" Std 'Scout'
1935 535 ECE101- 2     535101- 30.50ci 'Junior Scout'
1934 434 DCD101- 4     434101- Indian 4, 78ci
1934 334 CCD101- 2     334101- 'Chief' ,74ci
1934 634 FCD101- 2     634101- 45" 'Sport Scout', 1st yr with new keystone frame
1934 234 BCD101- 2     234101- 45" Std 'Scout' (still chief frame]
1934 534 ECD101- 2 5.0     534101- 30.50ci 'Junior Scout'
1933 433 DCC101- 4     433101- Indian 4, 78ci (1278cc)
1933 333 CCC101- 2     333101- 'Chief' 74ci
1933 633 FCC101- 2     633101- 1yr only 45ci 'Motoplane' (in Jr Scout frame)
1933 233 BCC101- 2     233101- 45" Std 'Scout'
1933 533 ECC101- 2 5.0     533101- 30.50ci 'Junior Scout'
1932 403 DOC101- 4     403101- Indian 4, 78ci
1932 EOC/503 EOC101- 2 5.0 2 1/2 3 1/16 503101- 'Junior' or 'Pony' Scouts begin, 30.5ci (500cc) 101 mo end
1932 COC/303 COC101- 2 8.5 3 1/4 4 7/16 303101- Chief ,74"
1932 BOC/203 BOC101- 2 6.61 2 7/8 3 1/2  203101- Std 'Scout' 45" in Chief frame,
1931 HEP/302 EH1536- 2 8.45 3 1/4 4 7/16  H1410- Chief, 74"
1931 GP/101 EGP3081- 2 6.61 2 7/8 3 1/2 G4050 101 Scout 45", also first service car. [last year]
1931 G/101 EG925- 2 6.05 2 3/4 3 3/16  SI346- 101 Scout 37", frame numbers continue note 9
1931  402 EA776-EA1509 4 12.10 2 3/4 3 1/4 -none- Indian 4, sequence continues to 11/1/31
1930 HEP/302 EH100-EH1535 2 8.45 3 1/4 4 7/16  -none- Chief 74", sequence continues to 11/1/31
1930 GP/101 EGP100-EGP3080 2 6.61     -none- 101 Scout 45" ,sequence continues 11/1/31
1930 G/101 EG100-EG924 2 6.05     none-SI322 note 9 101 Scout 37", continues to 11/1/31, late '30 frame no's commence
1930  402 EAXXX-EA775 4 12.10 2 3/4 3 /14  -none- Indian 4, sequence continues to 11/1/31
1929 GEP/101 DGP4318- 2 6.61     -none- 45" 101 Scout
1929 GE/101 DG2638- 2 6.05     -none- 37" 101 Scout
1929 402 EA100-EAXXX 4 12.10     -none- Indian 4, after 6/1/29 changes to EA series, which lasts till '31
1929 402 DA701-DAXXX 4 12.10     -none- Indian 4. up to 6/1/29 then changes to EA100 and up
1929 HEP/301 CH2225- 2 8.45 3 1/4 4 7/16 -none- 'Chief' 74ci, CH numbers continue to 11/12/29
1928 GEP/101 DGP100-DGP4317 2 6.61     -none- 45" 101 Scout changeover yr from sf scout, mostly assumed '29
1928 GE/101 DG100-DG2637 2 6.05     -none- 37" 101 Scout changeover fm short frame (sf) scout assumed '29
1928 -none- CZ100- 2 7.81 3 1/8   -none- 'Chief' 61ci, [last yr]
1928 LE/201 CL100- 1 3.03     -none- 'Prince'  21ci [last yr]
1928 -none-? CH100-CH2224 2 8.45 3 1/4 4 7/16 -none- 'Big Chief' 74ci, to 3/15/28 then model change to HEP/301
1928 -none- CGP1762- 2 6.61     -none- 101 Scout 45"  change to 45" 101? note 7
1928 -none- CGP100-CGP-1761 2 6.61     -none- Scout 45" to 3/15/28  change to 45" 101? CGP444+ note 5
1928 -none- CG2385- 2 6.05     -none- 101 Scout 37" to 3/15/28 then change to 37" 101.
1928 -none- CG100-CG2384 2 6.05     -none- Scout 37" to 3/15/28 then change to 37" 101. note 7
1928 402 DA100-DA700 4 12.10     -none- Ace name dropped, model added, serial CA-DA change 6/1/29
1928

 Ace

 CA100-CAXXX 4 12.10     -none- Indian 'Ace' to 8/1/28, DA101-DA700 are also 1928. note 10
1927 Ace VF100- 4 12.10     -none- First Indian 'Ace' 4 cyl,78ci, and poss E1100  up note 11
1927 -none- BZ100- 2 7.81 3 1/8 3 31/32 -none- 'Chief' 61ci (1000cc)
1927 -none- BL100- 2 3.03     -none- 'Prince' 21ci
1927 -none- BH100- 2 8.45     -none- 'Big Chief" 74ci
1927 -none- BGP100- 2 6.61     -none- Scout' 45ci (750cc)
1927 -none- BG100- 2 6.05     -none- 'Scout' 37ci (600cc), last pedestal eng mounts before though-bolt
1926 -none- AZ100- 2 7.81     -none- 'Chief' 61ci
1926 -none- AL100- 1 3.03     -none- 'Prince' 21ci
1926 -none- AH1180 only 2 ??     -none- 'Big Chief' 80ci, prototype, 1 only?
1926 -none- AH100- 2 9     -none- 'Big Chief' 74ci
1926 -none- AG100- 2 5     -none- 'Scout' 37ci
1925 Model Y 90Y001- 2 9     -none- 'Big Chief' 74ci
1925 Model Y 80Y001- 2 8     -none- 'Chief' 61ci
1925 Model Y 50Y001- 2 5     -none- 'Scout' 37ci
1925 Model Y 30Y001- 1 2.75     -none- 'Prince' 21ci (350cc) single, [first model yr]
1924 Model X 90X001- 2 9     -none- 'Big Chief' 74ci
1924 Model X 80X001- 2 8     -none- 'Chief' 61ci
1924 Model X 70X001- 2 7     -none- 'Standard' ,last year for the former Powerplus
1924 Model X 50X001- 2 5     -none- 'Scout' 37ci
1923 Model V 90V001- 2 9     -none- 'Big Chief' 74ci (1200cc)
1923 Model V 80V001- 2 7     -none- 'Chief' 61ci
1923 Model V 70V001 2 7     -none- 'Standard' (pplus) 61ci note 12
1923 Model NP VP001- 2 8     -none- 'Powerplus' 72ci renamed 'Standard' note 12
1923 Model V 50V001- 2 5     -none- 'Scout' 37ci
1922 Model T 80T001- 2 7     -none- 'Chief' 61ci (1000cc) first year, tho sold oct '21
1922 Model NP TP001- 2 8     -none- 'Powerplus' 72ci big valve note 12
1922 Model T 70T001-  2 7     -none- 'Powerplus' 61ci
1922 Model T 50T001- 2 5     -none- 'Scout' 37ci
1921 Model NP SP001- 2 8     -none- 'Powerplus' 72ci big valve note 12
1921 Model S 70S001- 2 7     -none- 'Powerplus' 61ci
1921 Model S 50S001- 2 5     -none- 'Scout' 37ci
1920 Model NP RP001- 2 8     -none- 'Powerplus' 72ci big valve note 12
1920 Model N 70R001- 2 7     -none- 'Powerplus' 61ci
1920 Model R 50R001- 2 5     -none- 'Scout'  37ci - [first model year]
1919 Model MP MP001- 2 8     -none- 'Powerplus'  72ci, 8hp, big valve
1919 Model M 70M001- 2 7     -none- 'PowerPlus', 61ci, 7hp, 2nd series
1919 Model M 40M001- 1 4     -none- 'PowerPlus', 30.5ci single,loop frame,
1919 Model M 30M001- 2 2.5     -none- 2½hp, loop frame, twin cyl, ci=?
1918 Model K KRX001- 2 ??     -none- ?hp, loop frame, 2nd series, special?
1918 Model N 70K001- 2 7     -none- 'Powerplus' 61ci
1918 Model B 50K001- 2 4     -none- ‘Little Twin’ 42ci, Hedstrom f-head motor note 17
1918 Model W 40K001- 1 4     -none- 'PowerPlus', 33.5ci single, commercial
1918 Model 0 30K001- 2 2.75     -none- ‘Light Twin’ 15.7ci, (Horizontally opposed motor)
1917 Model J RX001- 2 7     -none- 7hp, loop frame,  special?
1917 Model N 70J001- 2 7     -none- 'Powerplus' 2nd model year for 61ci (1000cc)
1917 Model B 50J001- 2 4     -none- ‘Little Twin’ 42ci, Hedstrom f-head motor note 17
1917 Model W 40J001- 1 4     -none- 'PowerPlus', single,4hp, 33.5ci commercial model
1917 Model O 30J001- 2 2.75     -none- Light Twin’ 15.7ci, (Horizontally opposed motor)
1916 Model G 70H001- 2 7     -none- 'Powerplus' first model year for L-head 61ci with cradle spring frame.
1916 Model F 70H001- 2 7 3 1/8 3 31/32 -none- 'Powerplus' first model year for L-head 61ci model with rigid frame.
1916 Model B 50H001- 2 5     -none- ‘Little Twin’ 42ci, Hedstrom f-head motor note 17
1916 Model K 20H001- 1 2.5 3 1/8  3 3/32  -none- Featherweight" 2½hp,  loop frame, two stroke
1915 Model G 70G001- 2 7 3 1/4  3 43/64 -none- 7hp, loop frame, Big Twin, 1st series 6ci, {B}
1915 Model G 50G001- 2 4 2 3/4  3 1/2  -none- Little Twin, 2nd series, 7hp, loop fr,  note 4, chrome vanadium frames! {B}
1915 Model E 40G001- 2 4 3 1/4 3 43/64 -none- ‘Little Twin’ 42ci, Hedstrom f-head motor note 17
1914 Model F 70F001- 2 7 3 1/4 3 43/64 -none- 7hp, loop frame, twin, 1st series, Hendee electric starter offered!
1914 Model F 40F001- 1 4 3 1/4 3 43/64 -none- 4hp, loop frame, single, electrics fitted!
1913 Model E 70E001- 2 7 3 1/4 3 43/64 -none- 7hp, loop frame, twin, yes & 80E0001 up as 32,000+ were built. note 8
1913 Model E 40E001- 1 4 3 1/4 3 43/64 -none- 4hp, loop frame, single, cradle spring rear frame, rigid still avail.
1912 Model D 70D001- 2 7 3 1/4 3 43/64 -none- 7hp, loop frame, twin, rigid rear only.
1912 Model D 40D001- 1 4 3 1/4 3 43/64 -none- 4hp, loop frame, single, first for kick starter!
1911 Model C 70C001- 2 7 3 1/4 3 43/64 -none- 7hp, loop frame, 2nd series, improved carb jets!
1911 Model C 40C001- 1 4 3 1/4 3 43/64 -none- 4hp, loop frame,  2nd series
1911 Model C 20C001- 2 5 3 1/4 3 43/64 -none- 5hp, loop frame, twin, 1st series
1911 Model C 1C001- 1 2.75 3 1/4 3 43/64 -none- 2¾hp, loop fr. sgle, 1st series, int and ext brakes, knock out rear axle!
1910 Model B 70B001- 2 7 3 1/4 3 43/64 -none- 7hp, loop frame, 2nd series
1910 Model B 40B001- 1 4 3 1/4 3 43/64 -none- 4hp, loop frame, 2nd series, footboards and front axles fitted!!
1910 Model B 20B001- 2 5 2 3/4 3 1/4 -none- 5hp, loop frame, twin
1910 Model B 1B01- 1 2.75 2 3/4 3 1/4 -none- 2¾hp, loop fr. sgle, 1st series, mech. oilers  multidisc clutch fitted!!
1909 -none- IOA001- 1 3.5     -none- 3½hp, loop frame, single, 1st series, 26.96ci (440cc)
1909 -none- IA01- 1 2.75     -none- 2¾hp, loop frame, 19.30ci (315cc)
1909 -none- 70A001- 2 7     -none- 7hp, loop frame, 2nd series, Big Twin, 61ci (1000cc)
1909 -none- 40A001- 1 4     -none- 4hp, loop frame, 2nd series, 30.50ci (500cc), hand brake introduced!
1909 -none- 20A001- 2 5     -none- 5hp, loop frame, twin, 38.61ci (630cc), first 2spd transmission!
1908 -none- T500-T1200 2 5     -none- 5hp, diamond frame
1907 -none- T100-T499 2 3.5     -none- 3½hp, diamond frame, first production v-twin!
1907 -none- 5000- 1 2.25     -none- 2¼hp, diamond frame, first  yr of mechanically operated valves!
1906 -none- 2350-4048 1 2.5     -none- 2½hp, diamond frame
1905 -none- 1168-2349 1 2.25     -none- 2¼hp, diamond frame, also a light weight twin cyl
1904 -none- 621-1167 1 1.75     -none- 1¾hp, diamond frame, first yr of spring front and tandem attachment!
1903 -none- 244-620 1 1.75     -none- 1¾hp, diamond frame,  first yr of handlebar controls!
1902 -none- 101-243 1 1.75     -none- 1¾hp diamond frame,  first chain transmission!
1901 -none- -none- 1 1.75     -none- 1¾hp diamond frame 90lbs!!, Indian Carb!

Engine Number Series and Year decoding.   Top  Greg Cooney

J A B C D E F G H I
0 1 2 3 4 5 6 7 8 9

Frame
Arrow 1xx
Scout/Warrior/TT 2xx
Chief 3xx
1950 -1953  Top
Midstream the 1950 Chief serial numbers changed from CEJ to just C on BOTH engines and frames, upsetting the rules as shown in the 1932-1950 table below . Early 50's Chiefs were CEJ, late '50 and' 51 Chiefs were  just 'C', and all '52 and '53 Chiefs were 'CS' . When this change happened all vertical twins also had frame numbers matching the engine exactly too. Examples :
Eng# BEJ911, Frame # 250911 is 1950 Warrior.
Eng# B1003, Frame # B1003 is 1951 Warrior. Top

 
  A B C D E F G H I
0 1 2 3 4 5 6 7 8 9

Frame
Jr. Scout 5xx
Std Scout, & VT 2xx
Sport Scout, MP 6xx
101 Scout 101
741 (mil) 741
841 (mil) 841
Chief 3xx
Indian 4 4xx

MP=Motoplane (in Jr.Scout frame)
VT=Vertical Twins excl Arrow.

 1932 -1950  Frame Numbers introduced late 1930 early 1931  (see note 9) Top
Example: we have an unknown motor (or cycle) that's stamped CDF 6403 and a spare frame stamped 441 1089  <work in reverse, i.e. numerals to letters using table or your fingers!>

1st letter is C, this is the series,
all Chiefs are 3, Fours are 4 etc (see table left)
2nd letter D is the decade year  4 and the
3rd letter F is the digit year 6

Answers:
Motor is 1946 Chief, Serial# 6403 (6303rd* made!)
Frame is 1941 Four, Serial# 1089, (989th* made!)   *as first machine started at xxx101
 
In order for a cycle to have 'matching numbers', the frame number must match the engine number and the first three numeric digits of the frame number equal the decoded motor number. i.e. for our example, the frame would have to read 346 6403.  see Frame Numbers section  Top

 
  A B C D E F
Yr '26 '27 '28 '29 '30 '31

Engine
Prince 21ci L
Scout 37ci G
Scout 45ci GP
Chief 61ci Z
Big Chief 74ci H
Four 1926/7 E
Four 1928-1931 A
1926 -1931   Top
Indian lost the plot for a few years between 1925 and 1933 with their numbering, possibly exacerbated by the 101 series 'no new model years', the Ace acquisition and how to incorporate frame numbers in 1930/31 which I will ignore in this scenario.

Examples:
AH1088 is a 1926 Big Chief, 74ci, serial 1088 
(similarly, AZ1088 would be 1926 61ci)
BGP1055 is a 1927 Scout, 45ci, serial 1055
(similarly, BG1055 would be 1927 Scou