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#1
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ID Pontiac Heads
I have a set of heads that I am trying to id Part # 9770716
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#2
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#9770716 = 1963 421 - or 1964 389/421
1.92/1.66 valves - 72cc chambers source = http://www.pontiacstreetperformance.com/psp/heads.html
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1969 GTO hard top ~ Std bore 400, '70-RA3 block, 670 heads, Bal. & Blue... M22, 12-bolt w/3:55s |
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