Quote:
Originally Posted by Dwight Southerland
eg 1967:
Was the "325hp" Firebird RA1 up-rated to the "360hp" Tempest RA1 rating? (which I assume was left as-is at 360)? Were both the stick and auto cam engines left with the same rating? Yes.
1968:
So, was the "335hp" Firebird RA1 up-rated to the "360hp" Tempest RA1 rating (which I assume was left as-is at 360)? Were both the stick and auto cam engines left with the same rating? Yes and yes.
1968-70
Was the base "330hp" Firebird up-rated to the base "350hp" Tempest rating? No. 1968 Firebird was left at 330. 1969 and 1970 Firebirds were 350.
1969:
Was the "335hp" Firebird RA3 up-rated to the "366hp" Tempest RA3 rating? Yes.
1970:
Was the "345hp" Firebird RA3 up-rated to the "366hp" Tempest RA3 rating? 345hp Firebird and the 366hp Tempest were both at 366. The 370hp RA IV engines in 1969 and 1970 were at 380.
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Thanks Dwight that is a great help in lining things up. At least with Pontiac you don't have to worry so much about a Ram Air factor, its either a Ram Air car or its not.
I'm not sure how (or if) NHRA handled cold air in general back then - we covered where NHRA factored the flat-hood 428CJ at 340hp, but factored the cold-air 428CJ at 360hp.
But I cant find any other examples were NHRA factored a cold-air car different than a flat-hood or "warm-air" car, does that sound right?
Well now I am thinking about those doggone Street Hemi's again.
Were they ALL factored to 480hp or just the ones with cold air, which would be all the 69-70 Hemis, some of the 71 Hemis, and a few of the 67 Hemis, the RO23 glass hood cars?
Could the rest of the warm-air Hemis been factored at say 465hp or were they all 480hp?