Three new Black Hawk cylinder heads from Air Flow Research push the third-gen Hemi to higher levels of power and come in 185cc, 212cc, and 224cc port sizes.

So let's cut to the chase: Air Flow; Research (AFR) has released a new Street Head that adds power without the harassment at the smog-check station.

Last month, you may recall we got a great performance boost for Jack Iafrate’s 351W engine with a set of Air Flow Research (AFR) aluminum cylinder heads. They w ...

AFR's LS1 head is a direct bolt-on replacement-no special parts required. Structural features such as Air Flow Research's trademark thick-head deck, reinforced rocker stud bosses, and a thick wall ...