D D SBC 69 70 Ser 40 thru 60 exc C A C 3898669 1 15 COVER heater control hole 60 69 Tilt 3788595 1 4 55 COVER ASSY heater air flow 64 66 All 3000257 1 13 85 INLET heater air 60 66 Ser 40 thru 60 exc FFC w Air Flow 3778577 1 25 SEAL heater case to dash air flow I 60 61 Ser 40 thru 60 exc Tilt 62 70 Tilt 3763976 1 10 SEAL heater hole cover 8 846 PIPE ASSY BRACKET CLIP COVER HOSE RETAlNER SPRING Heater See group 1 166 for clamps 60 64 Ser 60 Tilt 8 cyl 65 Ser 50 Tilt 4 cyc Diesel 65 Ser 50 80 Tilt 8 cyl I 65 Ser 60 80 Tilt 2 cyc l Diesel 65 69 Ser 60 Tilt 8 cyl 3778213 1 4 80 hose to thermostat air flow 60 64 Ser 70 80 Tilt 65 Tilt w Air Brake exc Diesel 327 f 65 Tilt 2 cyc Diesel T 66 Ser 60 Tilt 348 w Air Brake 66 Ser 80 Tilt w Air Brake 3778217 1 4 80 hose to thermostat airflow 60 70 Tilt 3831858 1 2 55 defroster inlet air flow A 60 70 Tilt 3831880 1 3 25 defroster outlet air flow 65 66 Tilt 4 cyc Diesel 2399818 1 2 70 inlet 65 66 Tilt 4 cyc Diesel 2399819 1 4 20 outlet 60 66 Ser 50 Tilt 60 66 Ser 60 Tilt w 327 Air Brake r 60 66 Ser 60 Tilt 2 cyc Diesel w Air Brake 60 66 Ser 80 Tilt w Air Brake 3778658 1 40 BRACKET hose to inlet manifold pipe clip air flow 38 70 All 3825416 2 40 CLIP double hose 38 70 All 3771163A R 05 CLIP 1 66 Ser 60 Tilt 2467433 1 6 30 COVER heater hose sponge rubber 5 ft length 38 70 All 8885155 A R RL 50 HOSE l D approx 50 ft roIl 8 962 Y 38 70 All 8885154 1 RL 50 HOSE 50 foot length 8 962 57 59 All 60 70 Tilt 3794094 1 1 00 HOSE heater and defroster outlet pipe elbow 60 70 Tilt 3134837 1 75 HOSE inlet pipeassy elbow 1 0 D air flow 38 70 All 3816659A R 20 RETAINER hose 2 559 V Not required in this I group See group 6 672 3755417 10 SPRING 8 849 CONTROL ASSY Heater 55 59 All 3144337 1 18 30 air flow use w 987216 987641 987691 60 63 Ser 40 thru 60 w Air Flow 64 70 Tilt 3157090 1 10 60 air flow use w 988354 985548 942 60 63 Ser 40 thru 60 w Recirc 3157092 1 6 70 recir use w 988101 64 66 All exc LCF Tilt 3885187 1 7 15 deluxe 65 66 All 4 cyc Diesel exc I I Tilt 2454442 1 7 10 deluxe 67 68 Ser 40 thru 60 Cab exc Tilt C A C 3934832 1 8 25 69 70 All Cab w C A C 1222890 1 16 15 69 70 Ser 40 thru 60 Cab exc Tilt C A C 3952204 1 8 50 8 850 VALVE Air Cond Vacuum Control 67 70 All w Air Cond 3010369 1 3 65 w seal A C evap temp 67 68 Ser 40 thru 60 w Air Cond lst design 1222690 1 3 25 VALVE ASSY heater and A C sensor vac cont Note 1 a NOTE 1 Not used w water shut off valve 68 Ser 40 thru 60 w Air Cond 2nd design 7308785 1 3 45 VALVE ASSY heater and A C sensor vac cont Note 2 NOTE 2 Used w water shut off valve 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CO RPORATlON P A 31S 8 845 8 850 8 12 REV 6 71