55 56 All 8 cyl exc dual 4BC 3711569A R 20 crossover pipe manifold valve steelbestos 1 V z I D x two Z5 M dia holes 57 59 Ser 3 8 cyl exc 4BC 3737679 1 75 exhaust pipe to crossover pipe 2 z I D x 3 z 0 0 cast iron 57 64 Ser 10 thru 30 8 cyl exh pipe triangle type outlets A 62 69 Ser 10 thru 30 8 cyl exc D D 396 67 70 G 10 20 8 cyl 68 69 D D 8 cyl exlhaust pipe to manifold spacer 69 G 10 20 Ser 10 thru 30 307 69 G 20 w A l R 8 cyl 39461828 A R 25 exh manifold valve 67 Ser 20 30 Diesel 5100147 1 23 manifold outlet elbow 67 70 Ser 20 30 Diesel 32211863 2 25 front pipe adapter 68 70 Ser 10 thru 30 396 3981068 1 25 exh pipe to crossover 37 49 All 593606A R 35 PAC l LING 1 I D x 2 0 D x thick 55 56 All 3709586 1 35 PACIl ING exhaust pipe to crossover pipe laminated steel asbest0s 1 2 I D x 2V 0 D 55 56 All 65 All 3696990A R 35 PACll ING exh pipe laminated steel and asbestos 2V lz I D x 2Vz O D Vu width 56 70 All Blazer 3731062A R 55 RING exhaust crossover pipe sealing exhaust pipe to manifold 2 I D x 2V2 O D cast iron 62 All 66 69 All 3768711 2 1 00 RING exh pipe to manifold sealing 3 613 STUD NUT VllASHER Exhaust Pipe 38 70 All Blazer 3760425 A R 20 exh piwpe and muffler exh crossover pipe to exh manifold 16 16 3 275 50 70 All Blazer 3760426 A R 25 exhaust crossover pipe to manifold muffler and exh pipe 16 16 x V6 3 275 38 70 All Blazer 838780 A R 15 NUT exh pipe and muffler 16 x thick brass 38 70 All Blazer 3829 086A R 10 NUT exh pipe to exh manifold 16 zinc plated ani seize coated 38 70 All Blazer 3754153 A R 10 WASHER exh pipe to exh manifold x V4 x Va thic l 5 383 3 616 SUPPORT BRACKET ASSY CLAMP Exhaust Pipe 64 67 Ser 10 20 exc D D 4 WD 64 67 Ser 10 D D 68 Ser 10 thru 30 exc D D 4 WD 68 70 D D exc Diesel 69 70 Ser 20 w 133 W B exc D D 69 70 Ser 30 exc D D 3838152 1 40 ESVIG long 68 Ser 10 20 119 127 W B w 2BC 396 69 Ser 10 exc D D 4 WD 69 Ser 20 w 127 W B exc 4 WD 3943452 1 2 30 EMI long 68 Ser 20 30 133 157 W B w 2BC 396 3943454 1 2 75 5 Vm long 70 Ser 10 4 WD 70 Blazer 4 WD 3975192 1 1 00 70 Ser 10 4 WD w 115 127 W B 6 cyl 70 Ser 20 4 WD 6 cyl 3976993 1 1 00 tailpipe clamp brkt and insul c member 70 Ser 10 Conv 70 Ser 20 Conv w 127 W B 70 Blazer Conv 3967299 1 35 63 70 All Blazer 3996543A R 1 25 BRACKET ASSY w insul Note 1 3 706 NOTE 1 When using 3996543 in place of existing bracket amd insul use old part as guide to establish proper attaching hole location and required insul length Cut off excess of insul length after measurement 63 67 Ser 10 thru 30 exc D D 4 WD 327 A I R 63 67 Ser 10 D D exc A R 67 Ser 10 20 w A l R exc 327 H 68 Ser 20 30 D D exc Diesel 327 68 70 Ser 10 thru 30 exc 4 WD 327 350 396 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATlON P A 3 REV 6 71 3 57 3 611 3 616