If the block was originally a DZ-suffix, it would have nodular main caps with '2482' on them, and there would be a 1/4" NPT oil gallery plug just above the timing chain cover from the machining/assembly at Flint. Even with those, that isn't proof of what it was originally assembled as.
The 'high nickel' or 'high tin' content on hi-po blocks is just a myth.
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Tim in NSW, Australia
1969 Van Nuys 04A Z/28 from Clippinger Chevrolet.
Cortez Silver with dark blue interior.
Ran at Lions Dragstrip and Pomona Raceway, with paint by Bob Kovacs of Fresno.
Last edited by ZLP955; 12-04-2017 at 08:04 PM.
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