1 1 I 250 ENGINE ASSEMBLY V 1 0 673 GEAR Flywheel Ring A I NOTE Ring gears with 153 teeth are only available as part of group 0 666 flywheel asm 66 72 All Blazer 250 3991408 1 168 teeth 0 679 UNDERPAN COVER EXTENSION SCREW ASSY Flywheel 66 72 Ser 10 thru 30 Blazer 250 exc A T 3714477 1 clutch housing 15 66 71 AI w P G 250 3933089 1 I trans converter 66 72 All w T H 400 250 3868810 1 trans converter 69 72 All Blazer w T H 350 250 6261091 1 trans converter 67 72 G 10 20 250 exc A T 354497 1 COVER clutch housing 71 72 G 30 exc A T 3843943 1 COVER clutch housing contains large V 2 dia round hole 66 72 All Blazer 250 exc A T 3734908 1 I EXTENSION clutch housing flywheel I w two indented throughs on surface 66 69 All Blazer 250 3924780 A R SCREW ASSY w washer 18 x I 7 1 0 683 HOUSING ASSY BOLT Flywheel and Clutch NOTE 1 When using Bolt 3736035 it will be necessary to use Washen 120394 8 929 66 67 Ser 10 thru 30 250 exc 102 I W B 3 832808 1 clutch I 67 72 G 10 20 250 3858403 1 I clutch 68 72 Ser 10 thru 30 Blazer 250 3925507 1 clutch 71 72 G 30 exc A T 3899621 1 R clutch 66 70 All Blazer 250 3736035 A R I I BOLT clutch housing attach I 16 x I A 1 I 300M steel pIain 3 275 Note i I i 1 66 72 All Blazer 250 3733130 2 BOLT clutch housing attach 16 x I A 2 washer hd 300M steel C 3 275 I 0 685 DOWEL Flywheel and Clutch Housing to Cylinder Block 66 72 All Blazer 250 3712745 2 clutch and flywheel x 1 long 40 728 GEAR Crankshaft Timing Steel I 1 66 72 All Blazer 250 3836605 lj 27 teeth 0 D stamped 71 0 736 GEAR Camshaft Timing 66 72 All Blazer 250 3866727 1 ldent No 3866727 0 748 NOZZLE Timing Gear Oil I 4 66 72 All Blazer 250 3875950 1 1 1 u 0 L s l 0 775 CYLINDER ASSY GASKET SPRING ASSY Clutch Main 66 Ser 10 thru 30 250 exc D D 4 WD 2621033 1 dual type 4 650 66 Ser 10 thru 30 250 exc 4 WD D D 5467740 1 I GASKET cylinder filler cap 4 651 66 Ser 10 thru 30 250 exc D D 4 WD 5459335 1 SPRING ASSY cylinder 0 787 ROD BOLT CLIP END SWIVEL Clutch Fork Release t 66 Ser 10 thru 30 250 3820105 1 fork push 67 70 G 10 20 250 3842819 1 clutch fork push 67 72 Ser 10 thru 30 Blazer 250 exc D D 3889915 1 clutch push 67 72 Ser 10 thru 30 Blazer 250 I exc D D 67 Ser 20 30 D D 250 67 72 Ser 10 D D 250 3996511 1 clutch fork push 68 72 Ser 20 30 D D 250 3996513 1 clutch fork push 71 72 G 10 t hru 30 6261899 1 fork push 71 G 10 thru 30 3968666 1 A clutch pull I 71 72 All Blazer l 3910293 A R BOLT 16 x 1l 0 841 66 72 All Blazer 250 I 3749084 A R CLIP push rod and swivel 4 037 66 70 All Blazer 250 1455017 1 I CLIP push rod 3 425 66 71 All Blazer 250 3782718 1 END pedal push rod 20 thds 67 70 G 10 20 250 V 3813225 1 SWIVEL pedal push rod 1 O L w dia hole clutch fork push rod i 66 72 Ser 10 thru 30 Blazer 250 3918467 1 SWIVEL clutch release rod 71 72 G 10 thru 30 3983508 1 SWIVEL clutch forkpush rod I 0 793 C NUT WASHER Clutch Fork Push Rod 66 72 Ser 10 thru 30 Blazer 250 3765322 1 adj l 7 x U shape no thd 1 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TL REV 5 79 I 0 31 0 673 0 793