Camshaft/Tappet Technical Question


http://forums.y-blocksforever.com/Topic1161.aspx
Print Topic | Close Window

By Daniel Jessup - 19 Years Ago
Tearing in to a few of my 292's laying around and have found one low mileage motor that blew a head gasket (evidently), but the camshaft and lifters (don't know why I put "tappets" in the title, but I do have a few gray hairs already:w00tSmile look really, really good. Can I use the old lifters if I go with a new cam ground for a little more power, or should I get a set of new ones?
By Duck - 19 Years Ago
You could run the old cam/ lifters as a set, but if you go with a new cam you'd have to have the lifters re-surfaced...
By Pete 55Tbird - 19 Years Ago
Hello; I believe your lifters can be resurfaced. This was very common years ago. You could probably do it yourself with some 600 grit paper and a sheet of glass. You just want to lightly scuff the face without destroying the curve (radius) of the lifter face. Use lite pressure and a figure 8 pattern. Pete
By glrbird - 19 Years Ago
Check the hardness of the new cam against the old one. I did just what you are refereing to 20yrs ago with a used aftermarket cam and it worked fine, 20,000 miles late and I still have the cam.  Do use a good break-in lube and Light springs on the valves till the cam and lifters seat. 2000 rpms for 30 minutes. If you are a gambling man?
By Daniel Jessup - 19 Years Ago
Not to sound like I am completely ignorant, but is the resurfacing somewhat like honing your cylinder bores for a new set of rings? I take it that the sandpaper process takes the smooth edge off the lobes?

Thanks fellas...