BACK TO TECHNICAL DATA PAGE This page contains information for engine Models Q thru ZZ, if your engine Model lies in this range, move down the page until you see your model series. The serial number shown under the Month and Year is the last serial number built in that month. If your engine Model is A thru PC go to page 1 of this listing. If your engine Model is 5 thru 23 go to page 3 of this listing.
Engines are listed in alphabetical order
MODEL SERIES Q L-HEAD, 2.75" BORE, 3.25" STROKE YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1925 110 120 1926 124 146 186 210 222 247 254 280 292 407 421 483 1927 509 519 599 689 989 1130 1224 1355 1424 1534 1605 1687 1928 2019 2394 2645 2961 3272 3494 3787 3976 4117 4209 4339 4689 1929 4961 5226 5508 5986 6326 6655 6935 7021 7174 7399 7532 7625 1930 7773 7867 8201 8399 8523 8615 8665 8712 8779 8808 8821 8848 1931 8868 8924 8943 8961 8973 8990 8998 9010 9013 1932 9016 9019 9020 9023 9026 9027 1933 9028 9030 9038 9039 9042
MODEL SERIES R, RA, R2, & RC L-HEAD, 2.75" BORE, 3.25" STROKE YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1929 100 102 104 114 160 200 239 1930 514 767 955 1059 1351 1462 1579 1653 1823 1899 2240 2419 1931 2699 2999 3233 3374 3679 3940 4011 4173 4193 4312 4345 4407 1932 4629 4716 5031 5149 5220 5412 5468 5530 5584 5656 5702 5714 1933 5742 5754 5797 5812 5823 5627 5834 5840 5841 5842
MODEL SERIES R1, & RH L-HEAD, 2.75" BORE, 3.25" STROKE YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1929 101 1930 103 104 106 110 112 1931 125 127 139 180 182 199 1932 200 201 203 209 216 220
MODEL SERIES S [ALL VERSIONS] L-HEAD, 2.25" BORE, 2.25" STROKE YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1930 100 109 183 379 566 767 1931 924 943 1041 1202 1361 1440 1558 1623 1771 1830 1875 1932 1892 1935 1947 1952 2001 2074 2104 2147 2159 2169 2182 1933 2190 2194 2204 2221 2222 2224 2225
MODEL SERIES T [ALL VERSIONS] L-HEAD, 2.25" BORE, 2.25" STROKE YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1930 106 108 110 116 152 1931 851 1237 1311
MODEL SERIES U [ALL VERSIONS] L-HEAD, 2.00" BORE, 2.00" STROKE YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1940 105 111 115 1941 368 1208 3135 3552 4203 5080 5270 5437 5844 5962 7100 11386 1942 12863 12920 12975 13301 13520 13827 13829 13830 13863 13943 13953 13963 1943 13979 14024 14028 14671 14872 15071 15371 1944 16572 16872 17372 17973 18264 18664 22249 22433 23522 25532 1945 25882 26121 26359 27672 29672 30991
MODEL SERIES W & WA L-HEAD, 2.75" BORE, 3.25" STROKE YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1931 108 109 110 368 750 1119 1128 1932 1131 1138 1145 1156 1157 1158 1218 1221 1231 1236 1238 1239 1933 1242 1245 1247 1252
MODEL SERIES WMG L-HEAD, 2.00" BORE, 1.50" STROKE YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1937 1190 2987 3968 5269 5654 6186 6824 1938 7284 7508 8195 8447 8468 8553 8727 8809 8843 8861 8930 8962 1939 9028 9083 9085 9123 9126 9138 1941 9198 9206 9207 9208 9216 9221 9224 9234 1942 9238 9242
MODEL SERIES WI, WR, & WMB L-HEAD, 2.00" BORE, 1.50" STROKE YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1938 6178 8911 11858 1939 17085 24912 36322 43403 49477 56016 61978 69193 74577 75485 86659 96859 1940 102241 110866 123474 131834 140045 143721 147580 153157 159297 165240 171683 179017 1941 190287 201016 213184 225278 237788 252442 261020 272106 280498 293122 304649 316332 1942 327862 338205 348318 349249 350981 351469 351690 352154 352164 352545 352560 353089 1943 353230 353240 353262 354646 354983 355416 355624 355938 355939 1944 355942 355947 355962 355963 357299 358048 358152 1945 360133 360619 363284 366256 369635 371255 372150 373330 374264 380265 387123 393569 1946 405680 423588 433126 433776 454592 466486 482022 488599 505095 511255 538679 1947 564403 577613 591177 617639 624217 638739 651466 666943 684882 703879 720237 731859 1948 752844 773944 795949 831713 839716 855496 875336 891642 921732 945572 968182 990614 1949 1029803 1058258 1088445 1118300 1140097 1159006 1165312 1167925 1172593 1172610 1173871 1174570 1950 1174874 1176817 1177144 1178229 1179774 1178774 1181192 1183892 1183994 1185420 1186429 1951 1186563 1187433 1187434 1190820 1190852 1191482 1191632 1192813 1193249 1193663 1952 1194224 1195154 1196127 1196761 1197134 1197901 1198315 1199127 1199834 1200650 1953 1201527 1202349 1203350 1204668 1205561 1207031 1208064 1208690 1210222 1210815 1212526 1212796 1954 1214264 1214839 1215335 1215829 1216860 1217286 1217914 1218066 1218938 1219315 1955 1220357 1220579 1221143 1221571 1222446 1222933 1223606 1224922 1225547 1226674 1227223 1228154 1956 1229630 1229631 1230287 1231053 1231653 1232793 1233390 1233932 1234732 1236343 1237988 1240316 1957 1240446
MODEL SERIES WM, & WMI L-HEAD, 2.00" BORE, 1.50" STROKE YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1936 250 3375 9365 16500 24196 1937 36315 36853 49764 71627 87748 106549 113081 117497 125458 130504 131023 134170 1938 138129 143965 151808 159320 169349 175561 179337 189123 195742 196211 196535 196554 1939 196631 196676 196693 196711 196727 196740 196761 196935 196938 1940 196944 196955 196965 196966 196971 197021 1941 197081 197103 197135 197145 197190 197255 197246
MODEL SERIES Y [ALL VERSIONS] L-HEAD, 2.25" BORE, 2.25" STROKE YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1931 101 102 103 294 933 1932 1671 2542 3150 3530 5579 6179 6853 7900 8970 9550 11230 11515 1933 12393 14112 16299 17780 20618 23377 27089 31985 39573 45163 47454 48886 1934 51483 55062 60816 66792 73813 81108 82987 85438 91335 96539 100634 104260 1935 111016 120400 130914 148843 158185 167003 177664 189162 200355 212350 216270 222867 1936 234728 246310 252916 263458 271810 280319 293466 310866 321104 326473 329466 330889 1937 330542 330776 332303 332716 333245 333758 333965 334869 335270 335295 335748 336084 1938 336621 336629 337672 338184 338195 338211 338232 338241 1939 338245 338255 338288 1940 338332
MODEL SERIES Z & ZZ [ALL VERSIONS] L-HEAD, 3.00" BORE, 3.25" STROKE YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 1931 101 102 109 114 122 1932 126 154 167 245 277 303 348 356 388 407 424 432 1933 446 466 530 544 668 699 724 805 908 1000 1053 1128 1934 1196 1221 1449 1580 1775 1861 1958 2032 2122 2177 2216 2254 1935 2372 2426 2560 2826 3087 3358 3446 3526 3585 3671 3713 4085 1936 4332 4603 4863 5333 5896 6233 6436 6564 6686 6795 6870 7196 1937 7538 7987 8603 9427 10159 10920 11266 11560 11670 11809 11892 11956 1938 12136 12266 12546 12918 13224 13440 13557 13667 13743 14284 14384 14527 1939 14631 14765 15283 15678 15979 16223 16469 16739 16932 17057 17271 17602 1940 18210 18697 19234 19967 20670 21023 21336 21794 22063 22334 22715 23156 1941 23999 25037 26286 27453 28770 29855 31058 32488 33777 33813 35218 35720 1942 36445 37416 39350 43743 46548 52853 59614 67563 74168 78039 81827 86844 1943 90639 95276 100842 107585 113307 118769 123931 130896 137348 142337 1944 155595 161174 167645 174170 180125 186548 192014 196158 201264 206225 211815 217852 1945 221621 227409 231869 236408 241782 246962 249924 253900 259989 262829 264544 265819 1946 267567 269011 270766 271909 273940 275783 277302 278373 280115 282403 284884 1947 288426 290407 292882 297652 300742 304450 307513 310785 314335 319793 321932 326809 1948 330682 333044 336646 341034 344435 345927 347870 351598 355426 357560 359412 361074 1949 361083 361093 361098 361103BACK TO TECHNICAL DATA PAGE