Re: BBC auction find
looks like he got some nice heads...the 074's are ZL-1/L-88 open chamber heads...the late 69 date hurts because they would be 70 heads most likely. Most of the ZL-s were built late February time frame I believe...although some were later.
And the L-89 heads are probably rarer I believe... both great performance GM heads. Others can chime in who are way more expert than I.
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