Though the Blacktop head includes a much more open up combustion chamber (see “Head combustion- chambers”) it nonetheless has a better static compression ratio (see “compression ratio”), this is only because of the piston design. The Silvertop piston encompasses a very smaller dome with two deeply angled exhaust flycuts, two https://bookmarkingalpha.com/story18510512/about-4age-20v-blacktop-for-sale