Napoleon1991
Well-Known Member
Im in the process of ordering valve springs, locks, retainers etc for my 452 heads. The valve lock kit that comp cams recommends says it comes with half 2 groove and half 4 groove locks. Why does it come with both and which ones do i need? My heads are at the machine shop now and they are closed for the weekend so i cant ask them. I would really like to order the parts asap so any answers would be appreciated.