GM C ORVAI R v v 1 O 8 8 O O 23 1 t to a a l te ts i n I e 12 o r Y8 30 31 l a 38 s 41 42 33 38 15 18 I 34 11 R 39 i 27 l 31 ENGINE HEAD AND MANIFOLD TYPICAL Key Description Group Key Description Group 1 Head Assembly Cylinder Head 0 269 21 Gasket Spark Plug 2 270 2 Valve Exhaust 0 297 22 Spark Plug 2 270 3 Sleeve Assembly Exhaust Manifold 3 602 23 Stud Carburetor Mounting 3 288 1 Gasket Exhaust Manifold Sleeve 3 611 24 Guide Push Rod 0 439 i Valve Lifter Assembly Hydraulic 0 459 25 Bolt Ia 20x h 8 900 6 Manifold Assembly Exhaust 3 601 26 Shim Valve Spring 0 303 7 Stud Carburetor Mounting 3 288 27 Manifold Assembly Exhaust 3 601 8 Connector Inlet Manifold Vacuum Balancer Tube Hose 3 267 28 Connector Inlet Manifold Vacuum Balance Hose Tube 3 267 9 Ring Unit Piston 0 643 29 Seal Valve Rocker Arm 0 429 10 Valve Inlet 0 296 30 Spring Valve 0 303 11 Plug Vacuum Modulator Hose Connector Hole in 31 Cap Valve Spring 0 309 Cylinder Head 1 097 32 Stud Valve Rocker Arm 0 429 12 Seal Crankcase Tube and Push Rod Oil Drain 0 443 33 Tube Exhaust Manifold Choke Heat 3 603 13 Rod Valve Push 0 426 34 Tube Push Rod Oil Drain 0 439 14 Head Assembly Cylinder Head 0 269 35 Seal Crankcase Tube and Push Rod Oil Drain 0 443 15 Stud Rear Shield Rear Shroud Ignition Coil and 36 Gasket Valve Rocker Cover 0 423 Air Exhaust Duet Bracket Attaching 3 704 37 Cover Valve Rocker Arm 0 386 16 Stud Exhaust Manifold 3 275 38 Ball Unit Valve Rocker Arm 0 429 17 Gasket Exhaust Manifold Sleeve 3 611 39 Key Valve Stem 0 319 18 Clamp Exhaust Manifold 3 273 40 Arm Valve Rocker 0 330 19 Lock Manifold Nut 3 601 41 Ball Serviced as Part of Ball Unit Valve Rocker Arm 0 429 20 Nut Exhaust Manifold and Muffler and Exhaust 42 Nut Serviced as Part of Ball Unit Valve Rocker Arm 0 429 Pipe Lock 3 277 43 Bolt v4 20xW 8 906