woodruff No 13 crankshaft gear 1 9 20 Plate thrust camshaft 4 1 9 21 GM Bolt and lockwasher hex hd 16 x Thrust plate to block 2 9 19 Spacer camshaft ... Ring retaining gear cover packing 1 GM Lockwasher in and ext Engine ground strap 2 GM Screw and lockwasher hex hd 16 x Front cover and engine plate to block