Love the '66 Belvedere! I ran a 4-speed '67 GTX with a serious HEMI (12.5:1, etc. Spun it off a 600 HP dyno at the machine shop with 1,000 RPM to spare); low-to-mid 11 second car, restricted by terrible street rubber choices at the time. Stepping into that second 4-barrel at ~4,000 RPM was a...