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11-29-2013, 01:46 PM
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#2 |
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VIP Member
Join Date: Oct 2008
Location: Somerset,Ky
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Re: 487 vs. 487x heads
Not sure about those heads off top of my head.I do remember that 461X had different cc runners. Should be able to look up in runner volumes on NHRA.com.
I don't think you can use the X castings unless it is listed in your casting # on engine specs. Mike Taylor 3601 |
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