Part#AS0058R - AussieSpeed Finned Chevy Valve Cover. Old skool extra tall fins,These rocker covers fit 283 305 307 327 350 400 Small block Chev.these are sand cast valve covers & the inside of the cover is 95mm tall so it allows for roller rocker & stud girdle clearance.the cover is around 100mm or 4 inches tall on the out side + the fins covers have cast in breather vents & a wide gasket flange. These covers have the tallest fins around, better double check your engine bay clearances, ideally suited to open engine bay Hot Rods.  Change the look of your small block chev so it is not so easilly picked.