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Old 02-25-2013, 12:12 PM
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From the appearance of the wear pattern on the push rods and the rocker arms, you should get rid of the push rod alignment plates and use self aligning rocker arms. That is evident by the round push rods holes that are about 1/2" in diameter, which indicates the heads are designed for self aligning rocker arms. Unfortunately, lash caps will not help because they are too large in diameter to fit self aligning rocker arms, therefore you must use 351W Ford long tip valves with self aligning rocker arms. Long slot, self aligning rocker arms that are designed for high lift camshafts are available from specialty auto parts retailers such as Summit or Jegs. In short, you're screwed.

The wear pattern on the push rods indicates they are binding against the alignment plates. Never use two methods of push rod alignment due to alignent problems.The wear pattern on the rocker studs indicates the rocker slot is too short for the amount of valve lift.

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Last edited by MouseFink; 02-25-2013 at 12:20 PM.
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Old 02-25-2013, 06:17 PM
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JUST A BACKWORDS THOUGHT,,,, while cleaning the garage today i found a stock 351w cam shaft,,,,,lose some power but it will run smooth, till the roller rockers come in.....
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Old 02-26-2013, 09:29 PM
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sugestion

I had the same problem a long while back. come to find out that the lifter was not letting the valve open. I would check the lifter or you might have a bent valve or guide.
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