[wizr]

Your Caprice sounds a bit unusual. Was it factory? They were not exactly touted as muscle cars. But then, GM did make a few 'sleepers'.

[Eric in the Ozarks]

Came from GM with this factory-made motor. 396 with 427 heads, 4 bolt mains, mechanical lifters and a major cam. They also put this motor in the Corvette in 66, before the 427 took its place for simplicity's sake.
The car was red/orange bronze with white vinyl and the auto shifter was on the floor. It had regular GM wheels and hubcaps, full factory mufflers and resonators (little mufflers just in front of the tailpipes) so, other than the lopey engine idle, it looked like "dad's car." It was a complete sleeper that dusted nearly everything around.