F has pretty good low end torque. More so than stock. Only difference between F and the B cam is the duration and lift. The F cam has a intake and exhaust lift of .512 and has a duration of 226 226 at .050. The B cam has an intake and exhaust lift of .480 and the duration is 224 224 @.050. hope this helps.
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68 Camaro
Gene Fulton 632ci Two stages of Jug
8.41 164mph Rockingham 1-26-03
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