69 70 All w L P Gas 350 3970658 1 490 00 Note 7 70 All Blazer 307 3970651 1 395 00 Note 7 FITTED CYLINDER BLOCK Includes Pistons Pins Rings and Bearings 55 62 All 235 2nd Ser 63 4 WD 235 3764752 1 197 00 cast 3764476 Note 3 4 5 57 All 8 cyl 58 66 All 283 3937908 1 221 00 cast 3 737739 62 All 261 63 4 WD 261 3774587 1 215 00 cast 3769925 Note 5 8 9 63 65 All 230 66 69 G 10 20 D D 230 3930967 1 190 00 Note 12 63 70 All 292 exc L P Gas 3930972 1 219 00 Note 10 12 64 66 G 10 194 66 Ser 10 D D 194 3931604 1 190 00 cast 3833057 Note 12 65 66 All 327 3937289 1 267 00 66 70 All Blazer 250 exc L P Gas 3930969 1 200 00 Note l2 67 All 283 3970128 1 213 25 Note 7 V 67 All 327 3970138 1 258 00 Note 7 68 70 All 396 3981807 1 290 00 Note 122 68 All 327 3961473 1 267 00 Note 7 68 69 All 307 3961468 1 223 00 Note 7 69 70 All w L P Gas 250 3958677 1 183 30 69 70 All w L P Gas 292 3958678 1 219 00 69 Ser 10 thru 30 w light duty 350 70 All Blazer 350 exc L P Gas 3970645 1 281 00 Note 7 69 70 Ser 10 thru 30 350 exc light duty 69 70 All w L P Gas 350 3970648 1 303 00 70 All Blazer 307 3970641 1 223 00 Note 7 70 All 3 53 5196490 1 347 33 NOTE 2 Remove pilot bearing from crankshaft when used on auto trans jobs NOTE 3 When used on 34 35 3700 remove cyl case water drain plug transfer drain cock rod clip from old engine NOTE 4 When used on jobs with hyd trans except 1958 1959 1960 models drill tap 18 hole for oil cooler line NOTE 5 When installing this partial eng on trucks originally equipped with a camshaft rear bearing to valve rocker shaft pipe assy the smooth side solid talppets remove the two pipe plugs in the tappet compartment transfer the pipe fittings from old eng NOTE 6 When using 3734105 on 3000 it is also necessary to use 1 3765002 engine conversion unit NOTE 7 Use with inlet manifold gasket unit 3957985 NOTE 8 When using on jobs that were equipped with a partial or by pass oil filter it will be necessary to remove 444687 pipe plug used as oil drain back hole plug in cyl case NOTE 9 When using on 1959 jobs that were originally equipped or those prior to 1959 that may be equipped with a full flow oil filter 103868 pipe plug used as plug in oil filter outlet hose hole in case 144037 reducer bushing used as reducer bushing in oil filter outlet hose hole in case must be removed also drive 3759366 oil filter oil gallery hole plug to bottom of hole approx below surface of boss NOTE 10 When using on models prior to 1968 it is necessary to transfer No 5 RH brg cap stud from repl eng NOTE 12 When using in plc of 1963 thru 1967 mod it is necessary to use the 1968 oil pan gskt units 0 034 EXPANSION PLUGS COVER CLIP TUBE Cylinder Block Also see 8 970 38 70 All Blazer 838538 A R 20 water jacket balance shaft hole cup type 1 V 38 59 All 6 cyl 3835121 A R 25 frt and rr in block 2 in frt and rr 2 in 38 59 All 6 cyl 3835577 A R 10 oil press pipe in block z O D cup shape 38 53 All 838127 1 15 2 dia 0 553 54 57 All 6 cyl 3704158 1 15 IV dia 0 553 55 60 All 8 cyl 3701638 6 10 oil pressure and tappet cup shape Vz 1 531 55 57 All 8 cyl 3704794 1 15 cup type ZV 4 dia 0 553 55 68 All 8 cyl exc 396 3738306 A R 40 square socket water jacket hole WI 68 70 All 396 3743389 1 1 20 water jacket hole cup type 1 0 D 60 62 All 261 63 4 WD 261 1st Ser 3759366 1 10 oil filter oil gallery hole V2 x solid 63 65 G 10 D D 4 cyl 70 All Blazer 6 cyl 3788418A R 20 cyl head water jacket Wu O D cup type 63 65 G 10 D D 4 cyl 63 70 All Blazer 6 cyl 3789860 1 20 vvater jacket rear 2 O D cup type 68 70 All 396 3864810 4 20 1 square socket cast iron heads 67 70 All 3 53 5121316 1 14 V zx Wu 67 70 All 3 53 5150023 1 14 COVER water hole 2V ctr to ctr of hole 67 70 All 3 53 5176668 1 72 CLIP air box drain tube 67 70 All 3 53 5132286 1 94 TUBE flared V x 12 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 31 REV 6 71 0 5 0 033 0 034