There were '73 GTO/ Grand Am/Grand Prix engineering mules and press cars with the SD-455 engines, but they were destroyed many years ago. The famous white SD-455 Grand Am was crushed in April 1978 or 1979 per Tim Claremont at the GA registry, since he has a copy of the factory crush order. The VIN ended in 00232. Over the years, people have mated the SD-455 engine to a 1973 A-Body, such as the gorgeous example originally bought by Jack Hoffman, now owned by Phil Griffith, but none were available from the factory to the general public.
__________________
1976 LeMans B09 Freeway Enforcer, 455/M40 Smokey
1977 Trans Am, 400/M21 Black/Gold Bandit. 44K actual miles
2017 Sierra SLT 1500 Z71 4X4 
2019 Canyon SLT Crew 4X4 
|