But there can be a pretty good case made for the old mid to early 60's 383's that had the siamese block and closed chamber 516 heads that had the max wedge style ports only with smaller valves.
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Please tell me where I can find more information on the 383 Siamese block.
I have never heard of such an animal.
I do know that Indy and mother Mopar had some Siamese cylinder Hemi and raise blocks. But as for a Siamese 383 block never heard of it.
I do know there were some raised block 383s back in the sixties but they're kind of rare.