Join Date: Sep 2004
Location: San Francisco Bay Area
Re: 460 Rocker Arms
It is not always mandatory to machine the pedestals before installing guideplates and 7/16 roller rocker studs. But it does depend on your combination of parts (as to whether or not it will be necessary).
If you are installing a cam and spring kit, and you will use, say, a 1.900" installed spring height, then you don't need to machine the pedestals.
But if you are using the original valve springs that have an installed height of around 1.82", then you might need to machine them down before installing the guideplates, depending on your combination of valve train components. (We have been successful in setting up combinations without having to do this; your results may vary).
Tell me exactly what you are intending to do, parts to be used, etc, and maybe I can be more specific. In all the 429/460 engine building that we do with D0VE heads, we have not yet had to machine the pedestals but I can understand why others may have resorted to doing so.
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