1 ECOOLANTT GRILLE OIL SYSTEM Y T T T 1 069 PUMP ASSY PUMP UNIT REPAIR UNIT Engine Coolant 1 NOTE 1 Includes pumpto block gasket I NOTE 2 On 55 56 models 3838094 reducing nipple must be used I NOTE 3 On 1969 V 8 models with A C it may be necessary to grind or file a notch in A C compressor front support to provide clearance to boss on top of water pump assy I T NOTE 4 Unit consists of 1 Water Pump Asm and 1 Water Pump Gasket 8 V 81 63 All 261 6259898 1 83 84 Ser 10 thru 30 292 3789536 1 I T B 87 70 All 3 53 5 144886 1 T T I 53 55 Comm 1st Ser exc H T 3774211 1 T PUMP UNIT pulley V wide Note I1 55 81 All 8 cyl 2nd Ser I T 82 All 235 I 83 4 WD 235 I 8259895 1 PUMP UNIT less pulley Note 1 2 55 82 All 285 283 327 I T 65 All 265 283 327 3998207 1 PUMP UNIT 8 83 84 All 283 T 88 71 All 283 307 327 350 a I T I 72 Ser 10 thru 30 283 307 327 I T 350 exc D D 72 Ser 10 20 D D 72 Ser 30 D D exc 4 BC 3998208 1 PUMP UNIT Note 3 T T 83 85 All 194 230 exc G 10 T I T 83 85 Ser 10 D D 4 cyl 84 G 10 194 1st design T 85 72 All Blazer 6 cyl exc 292 357281 1 PUMP UNIT Note 4 84 G 10 4 cyl I T I 84 G 10 194 2n d design T T 85 88 G 10 exc 8 cyl 3878189 1 PUMP UNIT 85 72 All 292 8258119 1 PUMP UNIT Note 4 Q I T A 88 70 Ser 10 thru 30 396 T I 71 72 All 400 3990993 1 PUMP UNIT 72 Ser 30 D D 350 T T I 72 G 10 20 30 307 350 481998 1 PUMP UNIT Note 4 67 70 All 3 53 5199538 1 REPAIR UNIT 1 070 CAP Coolant Pump T 84 89 All I 1191141 1 P heater hose pipe 1 073 BODY BOLT COVER STUD PLUG NIPPLE Coolant Pump 87 70 All 3 53 5109045 1 T T T 58 57 D D 8 cyl 3838848 1 BOLT 16 x 1 3 275 88 Ser 10 A l R w C A C 8 cyl 3779940 1 BOLT upper right hole 7 874 87 70 All 3 53 5119283 1 COVER I 80 88 Ser 10 thru 30 283 307 327 T T exc C A C A I R I 87 88 G 10 20 283 exc A l R 71 72 All 400 STUD upper R H pump attaching T 24 x 16 x 2 70 All Blazer 8 cyl T I I 71 72 All Blazer 307 350 3759755 1 lower L H 89 Ser 10 thru 30 w A l R 396 T T T exc A T 8272730 1 STUD upper R H 88 Ser 10 307 327 exc A T II T 89 Ser 20 Sub 307 327 exc I A T STUD upper left T 88 72 D D 307 327 350 upper right 89 Ser 10 thru 30 G 10 20 I T i w A I R 307 350 I 89 Ser 20 30 w 83 amp gen 8 T T cyl exc A I R 396 D D T 70 72 All Blazer 307 350 T Q 70 71 All 398 400 3927111 1 STUD upper L H 16 x 3 71 72 Ser 30 D D 350 exc A T T 71 72 G 10 20 30 8 cyl 3932388 1 STUD right water outlet 16 16 x 1 1 87 70 All 3 53 51 15214A R PLUG pump body hex socket pipe z A PTF 1 251 67 70 All 3 53 5119477 1 NIPPLE hose O D x l O L 0 206 1 079 GASKET Coolant Pump Assembly to Block NOTE 1 When using as L H gasket trim off A dia hole 41 54 All T T I 55 Comm lst Ser L 3836048 1 has two 1 l center holes one half I 2 V T flat hole 55 82 All 8 cyl 2nd Ser 4 I I GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TL I I I 1 069 1 079 I T 1 22 I REV 5 79