buffer (bÅ­f'Ér) Chemistry A substance that prevents change in the acidity of a solution when an acid or base is added to the solution or when the solution is diluted.
These Ford Racing Performance Head Gaskets are specifically designed for use with cast iron or aluminum cylinder heads on a Ford 289, 302, 5.0L, or 351 Windsor V8 engine.
If you use a 400 block with steam holes in the deck, you need to use a 400 head gasket and cylinder heads with matching steam holes (arrows). If your heads donât have the holes, you can use a 400 head gasket as a template and drill the six additional holes in each head yourself.mall Block Chevy Cylinder Heads. As you may already be aware, there are is a dizzying number of cylinder heads available for the Chevrolet smallblock. For over 40 years Chevrolet has developed heads for all types of uses, including stock, high-performance, smog emissions and over-the-counter all-out race heads.