63 4 WD 6 cyl 1st Ser 3701541 1 2 65 5 x 27 dimple in center 63 70 All Blazer 194 230 250 3788496 2 1 25 4 x 12 63 65 Ser 10 D D G 10 4 cyl 3788548 1 1 60 4 holes 63 70 All 292 3789547 2 1 45 3 holes 67 70 All 3 53 5116373 1 1 32 hand hole 68 70 All 396 3904378 8 50 GUIDE push rod slot z thick Note 1 NOTE 1 1st design engines will be built prior to 9 1 66 and will be identified on the engine stamp pad by T08 plus the day built 0 443 GASKET Valve Push Rod Cover 38 49 All 50 53 All 216 602336 1 1 05 9 x 26V 0 L 38 49 All 50 53 All 216 3835246 6 15 spark plug hole 1Vi l D x 1 z O D x V4 thick cork 50 62 All 6 cyl exc 216 63 4 WD 6 cyl 1st Ser 3701542 1 95 5 x 27 w lobe on bottom 63 70 All Blazer 194 230 250 3920938 2 1 10 63 65 Ser 10 D D G 10 4 cyl 3923469 1 65 17 z 0 L 63 70 All 292 3858936 2 90 67 70 All 3 53 5116380 2 13 hand hole cover 0 446 BOLT Valve Push Rod Cover 63 70 All Blazer exc 3 53 8 cyl 3814350A R 15 w lockwasher and seal 18 x Vu 0 459 TAPPET Valve or Lifter 38 39 All 838774 12 1 45 40 53 All 216 839263 12 1 90 w rod seat white paint spot 50 55 All 235 3660438 12 1 90 w rod seat yellow paint under rod seat 55 69 All Blazer 8 cyl exc 396 3799644 16 3 20 hydraulic type 56 62 All 6 cyl 63 4 WD 6 cyl lst Ser 5231880 12 1 80 mechanical type 2 long two piece body 63 70 All Blazer exc 8 cyl 5232450A R 3 34 hydraulic type 68 70 All 396 5232700A R 3 67 70 All Blazer 307 350 3869997 16 3 20 hydraulic type 0 480 FOLLOWER ASSY GU DE ROLLER Camshaft 67 70 All 3 53 5115087 9 5 69 67 70 All 3 53 4 5116125 2 1 99 GUIDE follower 67 70 All 3 53 5195220 9 3 04 ROLLER w pin 0 519 CAMSHAFT NOTE Engine Camshaft Break in Oil 1050004 Group 1 850 should be used when installing new camshafts 38 53 All 216 3836491 1 33 80 forged 838733 w ring and key 50 53 All 235 3836490 1 29 95 forged 3836023 2 grooves between No 5 and 6 inlet cams 56 57 Ser 3 6 cyl 58 Ser 3 6 cyl exc D D 58 D D 1st design 62 63 All 261 3836484 1 33 00 cast 3836390 54 55 All 6 cyl 58 D D 2nd design 59 Ser 3 6 cyl 60 62 All 6 cyl 63 4 WD 6 cyl 1st Ser 3836482 1 33 00 ldent No 3836127 55 62 All 8 cyl 3704212 1 30 45 ldent No 3703906 63 70 All Blazer 8 cyl exc 396 3896929 1 30 45 standard ldent No 3896930 63 69 All 194 230 3864918 1 30 45 ldent No 3864897 63 All 292 3789544 1 33 60 ldent No 3789545 63 65 Ser 10 D D G 10 4 cyl 3831607 1 24 40 ldent No 3830998 Note 1 NOTE 1 Used only with Valve Spring and Damper Assy 3735381 64 70 All 292 3847998 1 33 60 Ident No 3848000 68 70 All 396 3874872 1 34 15 Ident No 3874874 66 70 All Blazer 250 3864497 1 30 45 ldent No 3865896 or 3850958 A 67 70 All 3 53 5126930 1 78 90 0 529 PLUG SPACER Camshaft 67 70 All 3 53 5151277 2 13 gear 67 70 All 3 53 5121077 1 69 SPACER gear 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 31 REV 6 71 0 15 0 439 0 529