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Old 08-03-2005, 11:05 PM   #1
66+81
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73 350 heads

Figured I'd ask here. Is there any way to find out if my motor is pre-73 or not? I was told you could tell by looking at the heads. What's the difference?
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Old 08-04-2005, 02:57 PM   #2
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You need to get the ID numbers off the heads and the block, if there is still a number stamped on the front pad of the block (assuming it hasn't been decked) you can find out better what it is. With the numbers, look them up on www.nastyz28.com
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