ZL-1 Alum heads 1974 date code
1 head is good an the other i had check @ machine shop
said metal is not to standard machine shop works.
will sell $1500 for both bare heads L88 Zl1 GM replacements call 921-6057 Joe
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70 RS Z28 400TURBO hugger
69 427 L89 400TURBO 12bolt BV
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