A COOLANT GRILLE OILSYSTEM O A 0 A U A J OA A A 1 it A 4 A V 4 3 2 I A 3 2 l V A 8 cylinder Drive Pulley Crankshaft Groove No 3 3 pulley systems A Driven Dimensions Pulleys 88 68 Ser 10 thru 30 w P S A A A 87 89 Ser 10 thru 30 w P S A 8 cyl 35 P 9433722 1 88 89 Ser 10 thru 30 Air A A Cond w 396 A 31 X F 3953733 1 1 A 88 88 Ser 10 thru 30 w C A C A 307 327 58 R C F 9433769 1 88 87 Ser 10 20 C A C w A I R A A 327 A A r 88 89 Ser 10 thru 30 w Air A A Cond exc A T 396 le 57 C F A 9433766 1 88 87 Ser 10 20 A I R r 7 A w C A C H D Cooling A A 283 34 X F 3 9433720 1 A V A 3 cylinder 3 53 Drive Pulleys A r NOTE C Camshaft I IdIer W Water pump Ve Vac pump F Fan G Gen 1 A Driven V r Dimensions Pulleys S 87 89 Ser 20 30 Q 35 I W C A 9433722 1 87 88 Ser 20 30 w Brake A A Booster r 42 F V 3887698 1 87 89 Ser 20 30 exc Brake A l Booster 33 F 3905146 1 87 89 Ser 20 30 exc P S 4 29 G 3915112 1 A 88 Ser 20 30 w P S 33 G 3924541 f 1 89 Ser 20 30 vv P S I 42 z A P 3924517 1 89 Ser 20 30 w Brake A Booster y 43 z F V 3941323 1 A Belt Unit A 9 Hefer to note at beginning of group A A O A 1970 FAN BELT CHART A BLAZER AFAN AND GENERATOR l 250 exc H D Cooling 62 A A amp A 9433730 39 62 amp w P S 250 exc e C A c 9433732 7 1 40 62 amp w C A C H D A Cooling w P S 250 9433717 2 32 P S w C A C H D Cooling A 250 exc 62 amp 9433718 A 32 w C A C 250 exc 62 amp A V A P S 3915962 1 38 N GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TL 4 REV 5 79 A i 1 17 A 1 086 1 068