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700RWHP/635RWTQ - Stock Heads, Blower, etc - 230HP GAINS!!
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10-15-2012, 07:18 PM
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4fbodys
Drives: 3 3rd gens 1 4th gen
Join Date: Nov 2011
Location: wv
Posts: 82
You say stock heads but you did still change the valve spring right
4fbodys
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