Inside view of a hand-ported cast aluminum intake plenum inlet f…

Looking straight into the four-bolt throttle-body flange of a removed cast aluminum intake plenum, showing the smoothed, port-matched inlet bore with polished machining marks and a bright hand-ported blend into the housing. The plenum rests on red-painted wood boards alongside other loose engine hardware.

AI caption November 2006 · Photo 61 of 304