GROUP P I T USAGE DESCRIPTION QTY 0 269 3946072 427 454 1969 70 HEAD cylinder aluminum 2nd design Use w piston 3959105 and related O S 2 0 289 3916336 302 350 GASI ET cyIinder head Stainless steel 2 0 289 3969865 427 454 GASKET cylinder head 2 0 296 3879618 396 427 VALVE Inlet cast iron only 8 0 297 3879619 396 427 VALVE Exhaust aluminum or cast iron 8 NOTE Use with regular C I head but rework per instructions 0 297 3946077 427 454 1969 70 VALVE Exhaust use w 3946072 Head 2nd design 8 0 303 3927142 302 SPRING ASSY w Damper 1 NOTE Use with 3927140 Camshaft Assy 0 303 3891521 396 427 454 SHIIVI Valve Spring A R 0 303 3989354 ALL SPRING DAl IPER ASSY VLV use w L 88 ZL 1 cam 16 0 309 3989353 ALL CAP VLV SPRING use w L 88 or ZL 1 cam 16 0 310 3947880 396 427 454 KEY Valve stem hardened 32 0 333 3959182 396 427 454 ARIVI Valve Rocker stamped with letter H 16 0 426 3942416 396 427 454 ROD ASSY Inlet Valve Push 8 0 426 3942415 396 427 454 ROD ASSY Exhaust Valve Push 8 0 429 3899622 396 427 454 BALL Valve Rocker Arm 16 0 429 3921912 396 427 454 STUD Valve Rocker Arm Ball aluminum head 16 NOTE When using 3921912 in place of 3904396 on aluminum head install 452716 helicoil 0 439 3879620 396 427 454 GUIDE Valve Push Rod 8 0 519 3925535 396 427 454 CAIVISHAFT ASSY Chain Driven Operation Duration Int 354 Exh 360 1 0 519 3925533 T 396 427 454 CAIVISHAFT ASSY Gear Driven Operation Duration Int 354 Exh 360 1 3994094 396 427 454 CAIVISHAFT ASSY Chain Dr 1 TNOTE Use Thrust Bearing 3887871 0 519 3927140 302 CAIVISHAFT ASSY 1 NOTE Used in conjunction with 3927142 Valve Spring and Damper Assy 0 519 3959180 396 427 454 CAIVISHAFT ASSY 600 lift 1 0 519 3927144 302 CAIVISHAFT UNIT 1 0 533 3887871 396 427 BEARING UNIT Camshaft Thrust 1 NOTE Used with Gear Driven Operation 0 553 3952319 427 PLUG camshaft rear bearing Z L1 1 0 553 3783948 SEAL Z L1 1 0 603 3893260 396 427 ROD ASSY Connecting pressed pin 8 0 603 3909846 396 427 ROD ASSY Connecting floating pin 1st design 3 8 Bolts 8 0 603 3927145 302 1967 ROD ASSY connecting 8 0 603 3969804 396 427 454 ROD ASSY Conn floating pin 7 16 bolts 8 0 616 3965720 302 327 350 BEARlNG UNIT Conn Rod 001 O S A R 0 616 3965716 396 427 BEARING UNIT Conn Rod 001 O S A R 0 623 3969864 396 427 BOLT Conn Rod use w 3959187 7 16 20 A R 0 626 3942410 396 427 NUT conn rod bolt 7 16 20 use w 3959187 16 0 629 3909857 427 PISTON ASSY vv pin STD floating pin 8 0 629 3909858 427 PISTON ASSY w pin 001 O S floating pin 1st design 8 0 629 3909859 427 PISTON ASSY w pin 030 o s l floating pin 1st design 8 0 629 3909860 427 PISTON ASSY w pin 060 O S floating pin lst design 8 0 629 3916147 396 PISTON ASSY w pin STD floating pin 8 0 629 3916150 396 PISTON ASSY w pin 001 O S floating pin 8 0 629 3916152 396 PISTON ASSY w pin 030 O S floating pin 8 0 629 3916154 396 PISTON ASSY w pin 060 O S floating pin 8 0 629 3942541 350 PISTON ASSY Std forged 8 0 629 3942542 350 PISTON ASSY 001 o s l forged 8 0 629 3942543 350 PISTON ASSY 030 O S forged 8 0 629 3959105 427 1969 PISTON ASSY STD L 88 2nd design and ZL 1 8 0 629 3959106 427 1969 PISTON ASSY STD HI LIMIT L 88 2nd design and ZL 1 8 0 629 3959107 427 1969 PISTON ASSY 030 O S L 88 2nd design and ZL 1 8 0 629 3981891 427 PlSTOl I ASSY w pin 005 O S 8 NOTE Use with crankshaft 3941184 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 30 162 REV 2 71