BIG-BLOCK ENGINE CYLINDER HEAD GASKETS

Secure sealing between the cylinder heads and the block is a critical component of making reliable horsepower, so Chevrolet Performance puts the same engineering excellence and manufacturing precision into their gaskets, head bolts, and cylinder head studs as the blocks and heads they secure. Big-Block cylinder head gaskets are available in a variety of materials and thicknesses. Piston-to-head clearances should be considered when selecting gaskets. Use Gen V for 1991-1992 applications. Gasket packages contain one gasket unless otherwise specified.

12363414

COMPOSITION HEAD GASKET, 1965-1990

With pre-flattened copper wire ring and permatorque/blue stripe coating for engines with aluminum heads
Bore sizes between 4.250" and 4.370"

Use with Mark IV (1965-1990) engines only
Compressed thickness is 0.039"

12363412

COMPOSITION HEAD GASKET, 1991-NEWER

For 1991 and newer Gen-V and Gen-VI Big-Blocks with aluminum heads and 4.250" to 4.370" bore size
Has pre-flattened wire ring and stainless core that makes it ideal for saltwater marine use

Compressed thickness is 0.039"

12555728

HEAD GASKET, 454 ENGINE

Head gasket for 1991–2000 Gen-V 454 Big-Blocks

12366984

HEAD GASKET KIT, 502 ENGINE

For all Gen-V and Gen-VI 502 Big-Blocks with cast-iron heads
Has additional water hole for improved cooling of siamesed cylinder walls

Includes 2 gaskets (right and left) per package
Compressed thickness is 0.041"

12363411

COMPOSITION HEAD GASKET, 1991-NEWER

For Gen-V and Gen-VI Big-Blocks with aluminum heads and 4.375" to 4.540" bore size
Has pre-flattened wire ring and stainless core that makes it ideal for saltwater marine use

Compressed thickness is 0.039"

88961561

HEAD GASKET, 572 ENGINE

With pre-flattened wire ring for all 572 Big-Blocks with either cast-iron or aluminum heads

Compressed thickness is 0.030"

BIG-BLOCK HEAD BOLTS AND STUDS

12367779

CYLINDER HEAD BOLT KIT

Universal kit for cast-iron and aluminum Big-Block heads
Includes (8) 7/16-14 x 2.08" bolts P/N 88960334, (24) 7/16-14 x 4.060" bolts P/N 88960333, (8) 7/16-14 x 5.06" bolts P/N 88960332, and (40) hardened washers P/N 14011040