Engine - Gaskets/Seals - Head Gasket Special Competition

From GM Performance - This heavy duty composition head gasket for iron o aluminum heads is teflon coated and has pre-flattened steel fire rings (this feature reduces head and deck surface galling). This gasket features a 4.200 inch bore for bow tie, 400 small blocks and aluminum blocks. This gasket does not have steam holes required for the production 400 S/B. It does have revised coolant hole pattern (this reduces coolant temperatures between the center bores). This head has compressed thickness of .038 inch with volume of 8.9cc and this does not require retorquing.