WELL HERS MY 2 CENTS
I REBULT A 390 FORD FOR MY DAD FOR HIS 3/4 TON CREW CAB ABOUT 10 YEARS AGO . MOST FOR TOWING AND DAILY DRIVING.
I JUST HAD THE HEADS PLAINED 15 TH AND PUT A USED ALUMINUN INTAKE DUAL PLANE PLUS STOCK 4 BBL CARB AND WENT TO DUAL EXHAUST. IT WAS A WORK TRUCK SO HEADERS WERE NOT A OPTION.
I PUT A CRANE CAM IN IT BUT DONT REMEMBER THE SPECS BUT IT WAS BASICLY ABOVE STOCK A BIT BUT WITH QUITE A BIT OF LIFT.
THIS WOKE THE MOTOR RIGHT UP WITH A LOPY IDLE AND IT RAN AMAZINGLY STRONG . IT WOULD HAVE BEEN A GREAT MOTOR IN A CAR.