Slant six single, to slant six double.

Bewy said
It really is nonsense to claim as a blanket statement that RP cams do not work. In the same EMC contest that Jon Kaase won, post #65, He also had a 429 Ford entry that had a RP cam, 264/256 @ 050. He came 5th out of 29 entries listed in the results in PHR magazine in Feb 2009. His engine recorded the highest hp, 746, of those listed.

A recent trend has been to use lower ratio rockers on the exh. If the cam is a single pattern, you are effectively converting to a RP cam, acknowledging that the extra lift & duration is not needed.

Show me one test, any kind of comparative data where a reverse split was tested against a similar traditional split pattern cam and it makes more power. I’ll wait.

EVERY TIME I’ve seen them tested back to back, the only difference being reverse split vs forward traditional split pattern the forward split makes more power. Not “some” of the time, not “most” of the time, EVERY time. It is really nonsense to claim that they do work better with no comparative data.