0 0 2 I 02 ml 000 qqc I f F 11 A 3 2 l 3 2 I 8 cylinder Drive Pulley Crankshaft Groove No 3 3 pulley systems Driven Dimensions Pulleys 65 66 Ser 10 thru 30 w P S 67 69 Ser 10 thru 30 w P S 8 cyl 7 34 P 3960313 1 68 69 Ser 10 thru 30 Air Cond w 396 7 31 X F 3953733 1 66 68 Ser 10 thru 30 w C A C 307 327 7 z 587 C F 3851319 1 56 67 Ser 10 20 C A C w A I R 327 58 69 Ser 10 thru 30 w Air Cond exc A T 396 7 57 C F 3888404 1 56 67 Ser 10 20 A I R w C A C H D Cooling 283 7 33 X F 3925595 1 3 cylinder 3 53 Drive Pulleys 1 NOTE C Camshaft I Idler W Water pump V Vac pump F Fan G Gen Driven Dimensions Pulleys S 67 69 Ser 20 30 7 34 I W C 3960313 1 67 68 Ser 20 30 w Brake Booster V 42 F V 3887698 1 67 69 Ser 20 30 exc Brake Booster V2 33 F 3905146 1 67 69 Ser 20 30 exc P S 78 29 G 3915112 1 68 Ser 20 30 w P S 7 33 G 3924541 1 69 Ser 20 30 w P S 72 4272 P 3924517 1 69 Ser 20 30 w Brake Booster 72 437 F V 3941323 1 Belt Unit Refer to note at beginning of group 1970 FAN BELT CHART BLAZER FAN AND GENERATOR 250 exc H D Cooling 62 amp 3850801 3 10 38Vz 62 amp w P S 250 exc C A C 3889163 40 62 amp w C A C H D i Cooling w P S 250 3889374 4 65 7 31V P S w C A C H D Cooling 250 exc 62 amp 3 946009 2 75 31V w C A C 250 exc 62 amp P S 3915962 2 80 38 N 62 amp w P S 250 exc C A C H D Cooling 3887687 7 50 Vz 39Vz ia 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A Nj 1 066 1 066 1 20 REV 6 71