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Old 03-16-2010, 10:17 PM
GPCONV's Avatar
GPCONV GPCONV is offline
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Join Date: Jan 2006
Location: Central N.Y.
Posts: 272
Question Pontiac Head Guru's
Picked up a set of 4X heads that were off a 12 second, mechanical lift cam motor, started tearing them down to check them over and found the intake valves are longer, is that something they do as a mod to the Poncho heads for some better flow?

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