400 ENGINE ASSEMBLY 0 643 RING UNIT Piston Service Sets NOTE individual cylinder piston ring units std size only for warranty replacement in a single engine cylinder may be ordered thru the locel GMRD warehouse refer to ACNC 57 7 5 ldentify by eng model and year specify on your order the reason the parts ore required and also that the following note appears on your orden Do not ship unit package quant ty Each of these std size piston Hng units include the necessary components ring spacers segments expander required for replacement in a SINGLE engine cyl N0 TE See Dea er Price Schedule for applicable prices 4 STD 020 0 9 030 0 S 70 75 All 400 328526 32B531 1 4 t U All engines with a 400 cubic inch designation contain a 4 bore size 7 One cylinder replacement only 0 646 CRAN KSHAFT Engine 70 71 All w 4BC 400 3882841 1 Z 14 00 Note 1 70 72 All w ZBC 400 73 75 All 400 4 3951527 1 184 00 Note 1 NOTE I When used on AT It will be necessary to remove the pilot hearing 0 649 BEARING Crankshaft Clutch Pilot 70 74 All 400 3752487 1 1 30 bush type u LD X 1 qi 0 0 X 4 0 659 BALANCER PULLEY Crankshaft NOTE ln some cases double groove pulleys may be used in place of single groove pulleys NOTE Crankshaft harmonic balancer is also referred to as torsional damperi 70 72 All w 4BC 400 3860008 I 49 50 w 0 pulley 7 0 0 D 70 72 All w 2BC 400 73 75 All 400 6272225 1 29 25 stamped 9510 70 All w 4BC 400 70 All w Acc Air Cond 400 71 Pass Chevelle w Alr Cond 4BC 400 3937787 1 14 30 PULLEY 3 groove Note 1 NOTE I Not used on models having Acc Air Cond and 256 or 2 73 axle ratio 71 72 All w ZBC 400 exc C A C 73 75 All 400 exc C A C 63 amp Taxi Police 3956666 1 l0 15 PULLEY 2 groove 70 All w 4BC 400 71 All 4BC 400 exc C A C 3955290 1 10 15 PULLEY ASSY Z groove 70 All w Acc Air Cond 400 71 Pass 63 amp w ZBC 400 exc Taxi Police 71 72 All w C A C 2BC 400 73 75 All w 63 amp 400 73 75 Taxi Police 400 exc C A C 73 75 All w C A C 400 3972180 1 17 65 PULLEY ASSY 3 groove stamped 3972180 0 662 WASHER Harmonic Balancer and Crankshaft Pulley 70 71 All w 4BC 400 3864814 1 70 balancer 70 72 All w ZBC 400 73 75 All 400 3739422 1 51 balancer u 1 D x 1 4 O D x la thk 0 666 FLYWHEEL with Ring Gear 70 71 All w 4BC 400 exc A T 3998281 1 75 50 w 11 coil sprg clutch 12 bolt circle solid type 70 All T H w 4BC 400 71 All w A T 4BC 400 340296 1 26 25 repl 3991403 70 Monte Carlo w 2BC 400 exc A T 3986394 1 75 50 70 72 All A T w 2BC 400 73 75 All 400 340298 1 26 50 repl 3991404 70 Chevelle w Hvy Duty Clutch w 4BC 400 3955151 1 161 00 Note 1 NOTE I Used with dual plete clutch 71 All w ZBC 400 exc A T 3986394 1 75 50 0 669 BOLT DOWEL Flywheel to Crankshaft 70 71 All 400 exc A T 839756 6 14 i 20 x 1 J 70 72 All 400 w A T 73 75 All 400 3727207 6 42 20 x u 290M steel I 70 72 All w ZBC 400 I 73 75 All 400 3701679 1 18 DOWEL flywheel V dia X H long E GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 1l REV 4 77 M 15 0 643 0 669