Re: Value of 3946074 Aluminum heads?
Those are ZL1 & 2nd design L88 heads. If they have matching or close early-mid '69 casting dates, no signs of welded-up damage or porting they have some appeal to collectors.'69 was the only model year they were used in production. Not a big audience.
'70s casting dates are common as they were sold OTC for years.
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