I wanted to know more about this engine . I think Denny runs one . I did know a guy that had a 66 Mercury with a 410 . Is this a 390FE with a 428 crank ? Was it only used in Mercurys . In one book its listed at 330HP 444 ft.lbs torque . Did it use good rods and a forged crank ? I use to work on 391FE 4BBL truck engines . Man that intake was like 100lbs .