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I was told that they may be a difference in the materials that valves are made from, between a set of heads from turbo vs the same casting (8448) heads off a NA motor. I was planning on back cutting a set of stock valves and a little port work on a set of NA heads I've got. So the question I have.... should the valves be replaced because they are a weaker material?
Also are they the same size?
<small>[ October 21, 2003, 06:28 AM: Message edited by: Getchasum ]</small>
Also are they the same size?
<small>[ October 21, 2003, 06:28 AM: Message edited by: Getchasum ]</small>