If you have a ‘60 or ‘61 rocker arm shaft assembly on your engine, READ THIS!
It clearly points out that the rocker shaft has had oiling problems since day one.
While digging through old HOT ROD magazines, I came across an article on “Oil Control†in the January 1963 issue of HOT ROD. In it, they talk about the oiling situation existing in Comet/Falcon rocker shaft setups.
It says: “Remove the rear rocker stand bolt and grind off the top three threads (not the end three) near the bolt’s shank. It seems the threaded portion of the bolt is too long, and extends up into the interior of the rocker stand, which has an oversized hole to permit the oil to flow to the rocker shaft. The threads extending up into this area restrict it and slow the oil flow. This condition was corrected in 1962 by use of a new rocker stand with a square bolt hole, which gives adequate oil clearance around the bolt. This new rocker stand is part number C1DE-6531-A and maybe installed in the ’60 and ’61 Comet or Falcon engine.â€
This would help get the oil that is already in the head into the rocker shaft, BUT… IMHO the new rocker stand was not a sufficient fix. Later, FoMoCo added head bolts with a reduced shank to get more oil from the block to the head. Besides using the reduced shank head bolt, I’ve also drilled the rearmost rocker stand out a little – even though it was already a “square hole†stanchion.
Please re-read the “Rocker Arm Shaft Oiling Hints†sticky post. If you have the head off, look at Simon’s excellent pictures.
Good Luck
It clearly points out that the rocker shaft has had oiling problems since day one.
While digging through old HOT ROD magazines, I came across an article on “Oil Control†in the January 1963 issue of HOT ROD. In it, they talk about the oiling situation existing in Comet/Falcon rocker shaft setups.
It says: “Remove the rear rocker stand bolt and grind off the top three threads (not the end three) near the bolt’s shank. It seems the threaded portion of the bolt is too long, and extends up into the interior of the rocker stand, which has an oversized hole to permit the oil to flow to the rocker shaft. The threads extending up into this area restrict it and slow the oil flow. This condition was corrected in 1962 by use of a new rocker stand with a square bolt hole, which gives adequate oil clearance around the bolt. This new rocker stand is part number C1DE-6531-A and maybe installed in the ’60 and ’61 Comet or Falcon engine.â€
This would help get the oil that is already in the head into the rocker shaft, BUT… IMHO the new rocker stand was not a sufficient fix. Later, FoMoCo added head bolts with a reduced shank to get more oil from the block to the head. Besides using the reduced shank head bolt, I’ve also drilled the rearmost rocker stand out a little – even though it was already a “square hole†stanchion.
Please re-read the “Rocker Arm Shaft Oiling Hints†sticky post. If you have the head off, look at Simon’s excellent pictures.
Good Luck