Re: BBC 3999289
Fusky,
A 3999289 is a block probably cast the after the 1970 model year run for a 454 or 427. Could be a Warranty (CE) LS-6 if it has 4 bolt mains. Look @ the casting date and any #'s on the starter pad. An LS-6 had a "512" cast block. I hope this helps.
Jefferson Bound,
Bill
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