57 58 Ser 4 62 Ser 40 50 LCF 1559494A R 1 25 3 step hot plug AC46 14 MM 38 55 All 1st Ser 55 Ser 4 5 exc H D A 56 Ser 4 exc H D 57 58 Ser 4 62 Ser 40 50 283 5612390A R 1 25 3 step Ihot plug extended shield AC46S 14 MM 58 66 All 348 366 409 63 Ser 50 60 292 67 68 Ser 50 60 366 68 All 427 5612235A R 1 2 standard plug long reach water cooling C 42N 14 MM 58 59 All 348 60 61 Ser 70 80 5612241 A Fl 1 25 1 step hot long reach water cooling AC 43N 14 MM 63 66 Ser 50 230 250 67 68 Ser 40 250 5612630A R 1 25 standard plug AC 46N 14 MM 64 66 Ser 50 60 292 67 68 Ser 40 thru 60 292 5612791 A R 1 25 normal service AC C44N 69 All 250 5612826 A R 1 60 normal service AC R46N 69 70 All 350 5569901 A R 1 60 normal service AC CR43 69 Ser 40 50 292 5613313A R 1 60 normal service AC CR44N 69 70 Ser 50 60 366 427 5612756A R 1 60 std AC CR42N 70 All w L P Gas 250 70 All 292 5613355 6 1 60 AC R44T 70 All 250 exc L P Gas 5613357 6 1 60 AC R46T 70 Tilt 350 5569993 8 1 60 AC R44 2 271 GASKET Spark Plug Seat 38 70 All 5612328A R 01 Vu I D x Wu O D 14 MM chrome w retention dimple Note 1 NOTE 1 Ream or remove internal projections when using on long reach plugs 38 70 All 1555475A R 01 14 MM chrome less retention dimple 41 48 All 1555492 6 01 z I D x 0 D 10 MM copper 2 273 WRENCH Spark Plug 55 60 All 3708444 1 68 Wit hex 4V long 2 274 PULLEY FAN SPACER Generator F NOTE In some cases double groove pulleys may be used in place of single groove pulleys Outside Sltaft Groove Fan Dia Dia No Width Stamped 38 All exc EB EC O HC HD HE T 39 52 All exc large gen 1952 Yes 3 4 1 V 597667 1 52 All w 1OVz generator 53 54 Util 6 volt Yes 3 4 1 V 3700301 1 52 All w 1102786 5001 5002 53 55 Util w 1105008 5009 6 volt No 3 yl 1 1922951 1 55 57 Ser 4 6 low spd drive exc P S 60 61 Ser 40 50 60 w 35 amp L C l exc Tilt 60 61 Tilt w 35 amp L C No 2V 4 1 V 1932763 1 55 57 Ser 4 P S w 30 35 amp 12 volt 55 57 Ser 5 6 7 8 P S w 30 amp 6 cyl Yes 4 M 1 V 3711685 1 55 56 Ser 4 w 40 amp L C l 8 cyl 1st design exc P S 55 59 Ser 6w 40 45 50 amp L C l 6 cyl exc P S 56 59 Ser 7 w 40 45 50 amp L C l exc P S 348 A 56 59 Ser 8 w Air Equip 40 45 50 amp L C exc P S 348 57 59 Ser 4 w 40 45 50 amp L C l 6 cyl 1971 CHEVROLET MOTOR DIVISION GENEIRAL MO TORS CORPORATlON P A 3151 REV 6 71 2 17 2 270 2 274