64 65 All 6 cyl exc closed vent H D A Cl 66 68 All exc 8 cyl 3 53 68 70 All exc 396 3923256 A R GROIVIMET c case vent 56 57 Ser 3 D D 8 cyl A 63 All 8 cyl 2nd Ser 64 Ser 10 thru 30 283 3831671 1 30 GROMMET vent hose connector Note 2 NOTE 2 Grommet 3831671 replaced grommet 3715628 and retainer 3727693 70 Ser 10 thru 30 6 cyl exc D D 70 D D 70 All 396 3933189 A R 20 GIROMMET vent hose to A Cl conn vent valve vent flame arrestor All All 6 cyl 3894337 A R 10 GROIVIMET l D x Wu 0 D All All 3845783 1 30 GROIVIMET vent hose conn at rocker cover for 1 dia hole l D x Wu O D x Vu thk All All 3933188A R 15 GROIMMET Wu l D x Wu O D 0 386 58 59 Ser 3 w P B 3729398 1 2 55 TIEE crankcase vent valve 67 All w Acc Air Cond 6 cyl 67 69 Ser 10 thru 30 Air Cond w A T 6 cyl exc A I R 3794177 1 1 40 TEE vent hose vac power brake 1 V z O L 63 67 Ser 10 thru 30 G 10 3829149 A R 2 25 TEE vent hose l D male V l D female 1 O L 64 Ser 10 thru 30 283 exc FFC closed vent H D Air Cleaner 3769250 1 3 20 T EE vent hose 4 931 66 70 All Blazer 3989020 1 45 T EE ASSY c case vent hose 4 931 66 Ser 10 w A l R 8 cyl 67 Ser 10 20 G 10 20 closed pos vent w A l R 8 cyl 67 Ser 10 20 H D Air Cleaner w A I R 8 cyl 67 Ser 30 w closed pos vent 8 cyl 3885002 1 95 TEE ASSY vent connector at carb 67 70 Ser 30 C A C w single spd rear axle w Hyd Brake Booster 8 cyl exc 133 W B 68 Ser 10 thru 30 w fuel and vacuum booster pump 68 70 Ser 10 thru 30 Blazer w C A C 6 cyl 68 69 Cab w Acc Air Cond 69 Sub w Roof Mtd A C 70 G 10 w E E C 8 cyl 3887105 1 1 30 TEE ASSY vent hose to A C vac tank 66 Ser 20 30 w P B 327 2399658 1 3 40 TEE ASSY crankcase vent hose 4 866 68 Ser 10 thru 30 w C A C 327 TEE ASSY c case vent hose at carb 67 69 All w Acc Air Cond 6 cyl 67 Ser 10 thru 30 w C A C 8 cyl exc closed pos vent 69 70 Ser 10 thru 30 w C A C 8 cyl 3794176 1 1 65 c case vent hose 9 198 70 G 10 w E E C 6 cyl 3970076 1 80 TEE vent hose All All 5648517A R 36 GASKET vent hose connector w kits 6419925 9926 6420198 56 57 All w pos vent GASKET sheet metal connecting 61 Ser 10 D D crankcase vent to valve rocker cover 62 64 Ser 10 thru 30 D D hose connector air cleaner to valve 64 66 Ser 10 thru 30 w oil bath Air Cleaner exc 292 closed vent rocker cover hose connector 64 66 Ser 10 thru 30 w Brake Booster 292 exc H D A CI 3725773A R 20 air cleaner vent conn hole plate 1V4 x 2 x Vu thk Note 3 NOTE 3 On models prior to 1956 enlarge passage and relocate holes as necessary r 56 58 Ser 3 w H T pos vent 6 cyl 56 62 D D 6 cyl t i 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATlON P A 31 REV 6 71 1 55 1 745 1 745