62 69 Ser 50 60 2 cyc Diesel 5100147 1 23 manifold outlet elbow 3 61 1 62 66 Ser 50 thru 80 2 cyc Diesel 67 Ser 40 Tilt Diesel 5116205 2 30 exhaust 63 70 All 6 cyl 3953746 1 1 40 inlet and exhaust 65 69 4 cyc Diesel 2452693 2 1 01 inlet and exhaust 69 70 Ser 40 50 L P Gas 6 cyl 3891579 1 1 50 exhaust to inlet manifold 38 49 All 602483 1 1 30 GASKET UNIT 50 53 Util 216 3692351 1 1 30 GASKET UNIT 55 56 Ser 4 5 6 7 8 8 cyl 3711675 2 75 GASKET UNIT exhaust 1 center 1 mfld valve 2 end mfld gaskets Note 1 NOTE 1 For R H installation 1 extra gasket required 3711569 grou 3 611 55 Ser 4 5 6 8 cyl 1st design 56 Ser 4 8 cyl 3711676 1 2 35 GASKET UNIT intake 1 front 1 rear 1 distributor 2 side gaskets 56 Ser 5 7 8 56 Ser 4 8 cyl H D 55 62 All 6 cyl 3694871 1 1 30 GASKET UNIT exhaust 1 front 1 rear 1 center 1 flange gasket Note 2 NOTE 2 lf used on jobs after 1956 it is also necessary to use 3731062 exhaust pipe flange gasket and discard 3692831 57 59 Ser 5 6 7 8 283 exc L D 60 62 Ser 60 283 327 3742195 1 2 85 GASKET UNIT intake 1 front 1 rear 1 distributor 2 side gaskets 57 61 Ser 4 8 cyl 59 Ser 6 w L D 283 60 62 Ser 40 50 8 cyl 63 67 All 283 327 68 All 307 327 3931600 1 2 20 GASKET UNIT intake 58 65 All 348 409 3750620 1 2 35 GASKET UNIT intake 1 front 1 rear 1 distributor 2 side gaskets 66 70 Ser 50 60 366 427 exc L P Gas 3955525 1 3 65 GASKET UNIT inlet 2 end 2 side 1 distributor 69 70 Ser 50 60 w L P Gas 366 3955529 1 3 40 GASKET UNIT inlet 2 end 2 side 1 dist 69 70 Ser 40 50 350 exc L P Gas 3957985 1 2 40 GASKET UNIT inlet 2 front 2 side 1 rear 1 distributor V 69 70 Ser 40 50 w L P Gas 350 3957986 1 2 45 GASKET UNIT inlet manifold 2 side 1 front 1 rear 1 distributor 3 272 GASKET Intake to Exhaust Manifold 38 49 All exc D D C O E 50 53 All 216 838290 1 20 3Vz x 4 O L 39 55 D D 6 cyl 39 55 C O E 596268 1 20 3V4 x 7Vz O L 50 62 All 6 cyl exc D D C O E 216 3835572 1 20 3Vi wide on I D 4 holes 63 70 All 6 cyl 3788485 1 20 3 273 CLAMP SLEEVE Manifold 38 49 All 65 69 4 cyc Diesel 838546 10 20 inlet and exhaust 49 62 All 6 cyl 3835424 2 20 end 1Vz O L 50 62 All 6 cyl 3835505 4 20 center 2 O L 63 70 All 6 cyl 3823035 2 20 at exhaust ports 63 70 All 6 cyl 3792519 4 20 inlet and exhaust 39 49 All 50 53 All 216 837273 3 15 SLEEVE intake manifold to cyl head 1 O D closed x wide 50 62 All 6 cyl 3835506 3 15 SLEEVE intake manifold to cyl head 1 z 0 D closed x wide 3 275 STUD BOLT LOCK WASHER Manifold Also see groups 3 288 manifold to carb 3 613 manifold to exh pipe and 8 81 38 53 Util 54 55 D D C O E 6 cyl 838347 2 20 int to exh manifold 16 16 x 2 38 70 All 3760425 A R 15 inlet manifold 16 16 x 2 49 70 All 6 cyl 3835487 2 30 1 end threaded other end used as dowel to line up IT1fld y 1 6 X nyu 50 69 All 3760426 1 20 inlet manifold 16 16 x 3 Vu 50 62 All 6 cyl exc D D V C O E 216 t 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 31S 3 270 3 275 3 10 REV 6 71