66 70 All 366 3872798 2 3 20 22V z 0 L A 68 All 307 3911088 2 1 40 68 70 All 427 3921940 2 3 85 55 56 Ser 4 5 6 265 1st design 3711846 1 7 25 GASKET UNIT Note 1 55 62 All 235 3709428 1 5 70 GASKET UNIT Note 2 55 58 All 261 3751893 1 5 95 GASKET UNIT Note 2 4 t NOTE 4 When using on jobs after 1956 it is also necessary to use 3731062 exhaust pipe sealing ring and discard 3692831 exhaust pipe flange gasket 38 49 All 50 53 All 216 3691929 1 6 40 GASKET UNIT 50 52 All 235 3707038 2 5 70 GASKET UNIT 53 All 3707039 1 5 70 GASKET UNIT 57 58 All 283 exc L D 59 68 All 283 327 3931606 1 7 75 GASKET UNIT 58 65 All 348 409 3825191 1 7 85 GASKET UNIT Note 1 59 62 All 261 3764410 1 5 95 GASKET UNIT Note 2 62 69 Ser 50 60 4 53 5196579 1 10 15 GASKET UNIT Note 3 62 67 All 3 53 6V 53 5196578 2 8 47 GASKET UNIT Note 3 63 66 Ser 50 230 250 67 70 Ser 40 250 3960191 1 8 20 GASKET UNIT Note 7 NOTE 7 It may be necessary to cut out the center ribs from exhaust port opening of inlet and exhaust manifold gasket 63 66 Ser 50 60 292 67 70 All 292 3960190 1 8 20 GASKET UNIT Note 8 NOTE 8 It may be necessary to cut off the six 6 locating tabs of the valve rocker cover gasket 66 70 All 366 exc L P Gas 3957988 1 17 90 GASKET UNIT 68 70 All 427 3981920 1 11 75 GASKET UNIT 68 All 307 3931595 1 7 75 GASKET UNIT 69 70 All w L P Gas 366 3957987 1 18 35 GASKET UNIT 69 70 All w L P Gas 350 3957997 1 8 15 GASKET UNIT 69 70 All 350 exc L P Gas 3957998 1 8 00 GASKET UNIT 62 69 Ser 50 60 4 53 5116293 1 2 80 RING seal large 62 67 All 3 53 6V 53 5116292 2 2 59 RING seal large 62 69 All 3 53 4 53 6V 53 5116290A R 18 RING water seal 62 68 All 3 53 4 53 6V 53 5116122A R 18 RING oil seal 62 65 All 3 53 4 53 6V 53 66 67 All 3 53 6V 53 5121207 A R 23 RING ctr water hole seal Not required in this group See group 3 304 5160037 13 RING NOTE 1 Unit consists of gaskets for cylinder heads rocker covers intake and exhaust manifolds carburetor distributor air cleaner water outlet and valve stem oil seals NOTE 2 Units consist of cyl head rocker cover push rod cover manifold thermostathousing and water outlet gaskets exhaust pipe packing and valve stem oil seals NOTE 3 Unit consists of RINGS for cyl head water seal cyl head oil seal cyl head seal large center water hole seal water by pass thermostat hsg Also includes GASKETS for blower drive support and gov hsg water hole cover and therm hsg rocker cover exhaust manifold gov control hsg cover 0 293 BOLT CONNEC I 0R COVER CUP NOZZLE NUT PIN PLUG STUD WASHER Cylinder Head 55 59 All 6 cyl 3764578 1 65 V 13 x 4V drilled Note 1 NOTE 1 Required when any 1959 6 cyl block or short motor is installed in 1955 58 models Reduces full pressure oiling to restricted flow Also requires PLUG 3764579 in group 1 531 at right hand center bolt location 38 62 All 6 cyl exc Diesel 3835811A R 55 long Vz 13 x 4 raised circle on hd 38 62 All 6 cyl exc Diesel 3835812A R 35 short Vz 13 x 3 2 raised circle on hd 55 70 All 8 cyl exc 322 348 366 409 427 3734594 18 15 long Vu 14 x 3 55 70 All 8 cyl exc 322 348 366 409 427 3704796 16 15 short 14 x 1 56 59 All 322 1342898 18 45 long V 14 x 4V4 56 59 All 322 1342899 8 45 short Vie 14 x 2V z 57 59 D D 3741531 1 1 75 short frt L H Vz 13 x 24 x 4 58 59 Ser 7 9 348 60 65 All 348 409 3748030 1 2 10 short L H threaded both ends 16 and Vu 14 X 4Iygz O I 58 65 All 348 409 3735721 20 30 long V 14 x 3 M 58 65 All 348 409 3735722 A R 20 short Vie 14 x 3 V 4 59 70 All 283 307 327 350 3767468 4 15 medium Vu 14 x 3 circle on top of head Note 2 NOTE 2 Use with cylinder head with cast in qil trough on outer edge 62 69 All 3 53 4 53 6V 53 5121263 A R 1 14 11 x 6V 63 70 All 6 cyl exc Diesel 3788417A R 30 V 13 x SW 4 65 69 All D351 D DH478 2453406 6 48 inter 12 x 4 65 69 All D351 D DH478 2448983 10 61 long 12 x 5 65 69 All D351 D DH478 2448973 12 34 short 12 x 1 66 70 All 366 427 3877668 24 30 long 4V 0 L raised cross on top of head 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORAT ON P A 315 REV 6 71 0 15 0 289 0 293