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Other early OHC straight sixes

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I had a Pontiac GTO in my early days and knew several guys with Firebirds.  I'd heard of the Pontiac Sprint 6 but never knew much about it.  Found this article today.  It's an OHC but the cam is in the valve cover.  Pretty crazy.  It was a big engine too.  250 CI versus 146 for an L24.  Straight six with a Quadrajet.

https://www.hemmings.com/stories/article/inside-the-sprint-six

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