1. 2 fast z28

    2 fast z28 Active Member

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    hi guys just got my mancini racing rocker arms and I have a few questions the rocker arm shafts do I put the oil holes up or down also how much play should the rockers have from the rocker arm and spacers any help would be great oh yeah they are going on a set of trick flow 240 heads also
     
  2. beanhead

    beanhead FBBO Gold Member FBBO Gold Member

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    Oil holes point down and towards the valves, not towards the pushrod side. A small amount of side-to-side play is okay as long as the pushrod and valve contact areas don't get out of whack..I used some Comp Cams hold-downs with a shim spacer on the end of each shaft (for a total of 4 on the engine) to hold mine still because the OEM stuff that was in there was letting my rockers move too much, causing some bad wear. I replaced all of them with a new set of (thicker USA made) plain old stamped steel ones, swapped out the OEM style hold downs (that have the little nibs on the sides) to the comp hold downs, and it's been good ever since.
     
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