Rocker clearance
As time and miles marches on with our beloved FE some things become a more prominent problem than in years gone by. As we will look at in the article getting a set of used rockers that are serviceable is getting scarce. There are companies that manufacturer new OEM rockers , roller rockers , and if you look your factory rockers cam be bushed at significant cost . But if you have collected up enough parts over time, sorting out a set is possible. We will show what to look for and what clearances are acceptable. Rocker shafts OD should be betweening .839 and .840, Ford manuals state that acceptable clearance is .002-.005 on performance application with steel rockers. .002-.0025 is a good target. On aluminum rockers, .0025-.003 would be ok with the growth rate of aluminum. ID of the rockers should be between .841-.845 so a bit of mix and matching is required . Remember rocker arms are basically a giant oil pressure bleed off so clearance is important. So follow along a
