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Discussion Starter · #1 ·
Could you guys give me your opinion on gm head casting #468642,
just curious if anyone had any good info on these,good reliable heads?
i did a lil research and noticed some sites say diffrent valve sizes for these heads 1.72/1.50 or 1.94/1.50! thanks for the help guys!! wondering if there worth puttin on my ol restored 73 k20
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