buddy of mine had a 67 cutlass 330- 320 hp said ultra high comp on the air cleaner was 10.75 to 1 as i recall 2 speed p/glide and 2.56s gears came with the 800 cfm quadrajet all stock but dual exhaust 1.76 1st gear ratio it went a 100 mph in 1st @6000 rpm the car was a hoot 360 lb feet of torque