Hard to go wrong with the 068 H.O. cam in a 400 w/Tripower.
Running this combo with #48 heads in my 66 GTO w/3.07:1 12-bolt posi and TH400.
With 3.90:1 or higher numerical the 744 Ram Air cam will do well.
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1966 GTO Tri-Power
1970 GTO TheJudge
http://www.poci.org/
http://gtoaa.org/
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