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. This cover has a black finish.