Cam selection is an important issue. We've chosen a Crane flat-tappet hydraulic cam and lifter kit (PN 363902). This mild hydraulic kit is for '62-'84 221-302ci Ford small-block engines. This grind offers .456/.484 lift. The advertised duration is 260/270 degrees on 112-degree lobe centers. This is more aggressive than the 289 High Performance factory camshaft. For about $300 more, you can step up to a more aggressive roller camshaft and more power.