63 4 WD 6 cyl 1st Ser w 11 Clutch 3789730 1 23 45 solid type 55 59 Ser 3 w H T 6 cyl 60 62 Ser 20 30 D D w l l T 6 cyl 8615574 1 30 05 168 teeth 55 70 All Blazer 8 cyl exc A T l 63 70 D D 194 230 250 exc A T 63 66 All 292 exc A T 63 66 Ser 30 230 250 exc D D 63 70 Ser 10 20 Blazer w H D Clutch 4 Spd 230 250 exc D D 67 70 Ser 30 250 exc A T D D 3998281 1 28 55 solidl type 60 62 All w P G 6 cyl 3781962 1 17 60 spoke type Note 1 NOTE 1 It may be necessary to use 6 3727207 Bolts 0 669 to attach flywheel assy 63 65 Ser 10 D D 153 exc A T 63 70 Ser 10 20 Blazer 230 250 exc D D 4 Spd A T H D Clutch 3739423 1 27 35 w 10 coil and diaphragm spring clutch solid type 63 70 All Blazer w P G 153 194 230 250 283 307 327 65 66 All w P G 292 3789821 1 17 60 spoke type 64 70 G 10 20 153 194 230 250 exc A T 3791022 1 23 45 solid type 67 70 All 292 exc A T 3910364 1 25 60 solid type 67 70 All w P G 292 3910365 1 16 90 w reinforcement spoke type Note 2 67 70 All w T H 292 1st design 3910369 1 15 20 w reinforcement spoke type Note 2 NOTE 2 Dowel holes are drilled only reaming instructions are as follows 1 Align dowel holes of flywheel and crankshaft and install flywheel bolts torque to 110 ft lbs 2 Ream three dowel holes to 4520 4527 3 Install three 3886062 dowel pins drive pins flush with flange on crankshaft 67 70 All 3 53 5125960 1 167 45 68 All w T H 307 327 A 68 70 All w T H 400 250 396 69 Ser 10 thru 30 w T H 307 350 exc 4 WD 69 4 WD w T H 350 350 70 All w T H 350 3937736 1 15 90 spoke type Note 3 68 70 All Blazer w T H 3868802 1 Note 3 NOTE 3 On some application 3868802 and 3937736 are used optionally in production These parts can be identified by their bolt hole mounting patterns 13868802 incorporates a single bolt hole mounting pattern 11V2 in dia 3937736 incorporates two staggered bolt hole mounting patterns The inner pattern 10 in dia the outer 11V2 in dia 69 4 WD G 10 20 w T H 350 307 69 70 All w T H 350 230 250 70 All w T H 350 307 3932424 1 17 10 spoke type 69 70 All w P G 350 3899668 1 15 95 spoke type 70 All w T H 292 2nd design 3983453 1 14 80 w reinforcement spoke type 0 669 BOLT DOWEL LOCK PLATE Flywheel to Crankshaft 40 41 All 839117 6 15 24 x 1 42 70 All Blazer exc A T Diesel 839756 6 15 2O x 1 55 60 All w P G H T 8 cyl 3701686 6 15 2O x Wag 290M steel 61 70 All Blazer w A T 3727207 6 15 Vu 20 x 4 290M steel 67 70 All 292 exc A T 3910367 6 15 V2 20 x 1 67 70 All w A T 292 3910368 6 15 V1 20 x V4 40 62 All 6 cyl 63 4 WD 6 cyl 1st Ser 606535 3 15 DOWEL dia x Wu long compressor support 55 61 All 8 cyl 3701679 1 15 DO WEL flywheel Vu dia x V long 63 70 All 292 3886062 1 30 DOWEL 2 x 1 Note 1 NOTE 1 lt will be necessary to align the dowel pin hole in flywheel and crankshaft and ream together to V 64 42 62 All 6 cyl 63 64 All 292 136857 3 LOCK washer ext tooth VN 8 932 67 70 All 3 53 5126671 1 22 PLATE flywheel bolt skuff 1971 CHEVROLET MOTOR DIVlSl0N GENERAL MOTORS CORPORATION P A 31 REV 6 71 0 21 0 666 0 669