1 427 PIPE ASSEMBLY SCREW SPRING Oil Pan Trough 40 53 All 3835225 1 10 10 Note 1 NOTE 1 Refer to Chevrolet Service Manuals for proper nozzle height and alignment 1 428 BOLT SCREW Oil Pan Attaching with Lockwasher 42 57 All 180075 4 18 x ext lockwasher 38 70 All Blazer 3817006 A R 10 20 x 0 679 1 429 GASKET UNIT SEAL Oil Pan 40 54 All 55 Comm 1st Ser 604338 1 1 35 left and right gaskets and seals 55 62 All 6 cyl 2nd Ser 63 4 WD 6 cyl lst Ser 3714551 1 1 85 includes R H and L H gaskets seals 55 56 All 8 cyl 3730460 1 3 05 2 L H and 1 Fl H gasket 3 exh manifold gaskets 1 frt and rear seal and 1 exh pipe packing 56 67 All 265 283 327 68 70 All Blazer 307 327 350 3931599 1 1 25 side 57 59 Ser 3 8 cyl 60 70 All Blazer 283 307 327 350 3931598 1 4 10 includes R H and L H gaskets and seals exh manifold valve gasket and exhaust pipe sealing ring 63 65 Ser 10 D D G 10 4 cyl 3930961 1 1 80 R H and L H gaskets and seals 63 70 All Blazer 6 cyl 3930962 1 2 00 R H and L H gaskets and seals 65 70 All 396 3958614 1 3 40 67 70 All 3 53 5196059 1 1 00 67 70 All 396 3931593 1 2 80 side 55 62 All 6 cyl 2nd Ser 63 4 WD 6 cyl 1st Ser 3836574 2 45 SEAL frt and rear molded rubber 55 70 All Blazer 8 cyl exc 396 3887151 1 45 SEAL front 55 70 All Blazer 8 cyl exc 396 3887152 1 60 SEAL rear 63 70 All Blazer exc 8 cyl 3921973 1 35 SEAL rear 63 70 All Blazer exc 8 cyl 3923440 1 60 SEAL front 67 70 All 396 3909800 1 85 SEAL front 67 69 All 396 3860052 1 85 SEAL rear rubber 70 All 396 3955115 1 85 SEAL rear 1 453 FLANGE PLUG SCREW Oil Pan Drain 40 57 All 9 60 65 Ser 10 thru 30 G 10 66 69 All w P G 70 All 396 3723008 1 30 1 x Va w Vz 20 hole in ctr All All w magnetic drain plug 3866776 1 1 15 PLUG V1 20 38 70 All Blazer 3923420A R 30 SCREW V2 20 x Non magnetic 1 456 GASKET Oil Pan Drain Screw 38 70 All Blazer 3921989A R 15 nylon 1 2 D x 9 10 O D 67 70 Ser 20 30 Diesel 5177773 A R 05 z D x 1 O D 1 516 GAUGE Oil Level B A v i 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATl0N P A 31 1 427 1 516 1 46 REV 6 71