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#1
10-11-2025, 02:10 PM
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There is no reason to believe manual/automatic masters were different. Both show code CU in box #56 on the Body Broadcast Copy.
Vintage road test photos (PHR March '69) show automatics with bleeders.
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Keith Seymore (10-11-2025) | ||
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#2
10-11-2025, 06:11 PM
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From JM’s 67/68 Z28 book confirming 5460346 WT master with bleeders.
Other things I’ve noted regarding the 346 master are that there are 2 front styles for the WT stamp and that some masters have an upside down cast number. I believe that both versions of the WT stamp are legitimate although beware that reproductions (or restamps) do exist as stated in Chick’s build thread. I also believe that both versions of the casting number are legitimate. I do wonder if Defiance had more than 1 foundry and if that’s the reason for the different casting number orientation and stamp font? If you’re also looking for a lid you’ll need one without a SAE stamp. There are reproduction lids out there but it’s easy to spot them since font and word spacing is different.
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#3
10-11-2025, 06:20 PM
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Nice looking master here. Perhaps still available.
https://www.yenko.net/forum/showthre...hlight=5460346
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