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Old 10-03-2002, 10:21 AM
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tonylsg tonylsg is offline
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i did some research on vortec heads, and i found that the 98 heads are 64cc, but have 1.84int and 1.5 exh valves. how much would the 1.84 int effect performance? i couldn't find any thing on the runners or any other year. I am not sure which year motor the heads are off of, also not sure if there is any difference.
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