CJ More I actually don't have any direct experience with clifford valve cover, as I used a similar one from 4WDHardware. As far as
how to install them it should be the same though. First of all you will probably want to take at look at how your OEM plastic valve
cover attached. There are two main ways. Either it is held down with two bolts in the middle of the cover, or it has bolts around the
out side of the cover. They both leak, as I am sure any 258 engine owner knows. The new valve cover uses all the bolt holes
around the outside of the cover and several others you will have to drill and tap. On my head there were depressions already on the
head where I was to drill the new holes. If you have the two bolt valve cover you may have to drill and tap all the bolt holes. The next
thing is the depth of your new holes. I was able to look at the included bolts in my kit to measure about how far to drill/tap. I
suggest that you call up Clifford and have then tell you what size bolts to use and how far to drill. (If you drill to far you may drill into
the water jacket or worse.) While you are at it have them fax you a copy of the directions, but I will continue. After you have the
holes all done you should be able to get your gasket out and make sure everything lines up. I have had to expand some of the bolt
holes in the gasket in order to get the bolt through it. I suggest that you use allen bolt (internal hex) bolts on the head as you will
not have enough room to work with a wrench more then likely (especially at the back of the head), also there may not be enough
room to get an external hex socket over the bolt head. Don't overtighten as aluminum will crack or distort on you.
One other bit of advice, if you order the Clifford catalog get in writing that they are going to send you a new catalog. I ordered a "new"
catalog from them last year and I recieved the 95" catalog. I was rather pissed off. At least the prices were still current. Otherwise
I think that Clifford really knows its stuff. If you still need it I will try and dig up my directions with those hole depths.
Good Luck,
Ethan
how to install them it should be the same though. First of all you will probably want to take at look at how your OEM plastic valve
cover attached. There are two main ways. Either it is held down with two bolts in the middle of the cover, or it has bolts around the
out side of the cover. They both leak, as I am sure any 258 engine owner knows. The new valve cover uses all the bolt holes
around the outside of the cover and several others you will have to drill and tap. On my head there were depressions already on the
head where I was to drill the new holes. If you have the two bolt valve cover you may have to drill and tap all the bolt holes. The next
thing is the depth of your new holes. I was able to look at the included bolts in my kit to measure about how far to drill/tap. I
suggest that you call up Clifford and have then tell you what size bolts to use and how far to drill. (If you drill to far you may drill into
the water jacket or worse.) While you are at it have them fax you a copy of the directions, but I will continue. After you have the
holes all done you should be able to get your gasket out and make sure everything lines up. I have had to expand some of the bolt
holes in the gasket in order to get the bolt through it. I suggest that you use allen bolt (internal hex) bolts on the head as you will
not have enough room to work with a wrench more then likely (especially at the back of the head), also there may not be enough
room to get an external hex socket over the bolt head. Don't overtighten as aluminum will crack or distort on you.
One other bit of advice, if you order the Clifford catalog get in writing that they are going to send you a new catalog. I ordered a "new"
catalog from them last year and I recieved the 95" catalog. I was rather pissed off. At least the prices were still current. Otherwise
I think that Clifford really knows its stuff. If you still need it I will try and dig up my directions with those hole depths.
Good Luck,
Ethan
