SIA Flashback – Star-Crossed Supercar

Published by Mike on June 15, 2014

To get the full story of the Super Duty 455, as can be found underneath the shaker hood of the 1973 Firebird Formula that appeared in SIA #186, November 2001, writer Jim Dietzler not only got behind the wheel of the Formula for a first-hand report on the engine’s capabilities, he also spoke with legendary Pontiac engineer Herb Adams about the engine’s origins and development and why such a muscular engine debuted deep within the fuel economy-conscious Seventies.