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In 1968, the Ram Air engine continued, as well as the 400 HO. At mid-year, Pontiac released a round exhaust port version of their Ram Air package, and called it Ram Air II. The old 1967 engine was now referred to as Ram Air I.


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Mike's right, but I'd like to clarify two things: the quote above . . . the RAII replaced the RAI mid-year. They did not run concurrently. Also, through 1965-68, Ram Air was available as an accessory package on the GTO's lesser engines. The 1968 GTO that Hot Rod tested has this even though it was the standard 400/350 engine. Further proof is that the car did not get 4.33 gears (for some reason, Ram Air Firebirds received 3.90s instead.)

Here's the engine roster for 1967-69, excluding the 2bbl. engines:

1967
400/335
400HO/360
400RA/360

1968
400/350
400HO/360
400RA/360
400RAII/366

1969
400/350
400RAIII/366 (no relation to the RAII, despite similar rating.)
400RAIV/370