These 455, 450-550 HP engines with iron heads even, are Pontiac wheelhouse. You do not have to do much to them, Easy on parts, short shift them and let torque do the work and they last forever, almost.
Forged pistons, decent steel rods, a few oiling tricks and you have a winner.
All the guys at the track racing other brands doing low 11s, low 10s went through several engines during my engines time. While mine kept coming back. It was a reliable beast, still is.
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