09-28-2019, 11:13 AM
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#1 |
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Senior Member
Join Date: May 2010
Location: Upstate; The Real New York
Posts: 443
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Aluminum heads
I have three 21 stud aluminum heads. Two(r & l) have the ford logo cast
onto them; one has only a faint part number while the other has sharp detail and the word ALUMINUM plus 6.32-1. The third head(L) has only the part number(faint) and on the bottom,below the water outlet is 21A. Do these variations identify different years and/or outside vendors ??? |
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09-28-2019, 11:32 AM
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#2 |
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Senior Member
Join Date: May 2010
Location: Coral Springs FL
Posts: 10,916
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Re: Aluminum heads
Could 6:32 be the compression ratio? Post a few photos if possible.
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09-28-2019, 12:18 PM
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#3 |
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Senior Member
Join Date: May 2010
Location: Upstate; The Real New York
Posts: 443
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Re: Aluminum heads
Only thing that shows up in photos is ford.
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09-28-2019, 12:52 PM
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#4 |
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Senior Member
Join Date: May 2010
Location: southeastern Michigan
Posts: 10,090
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Re: Aluminum heads
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