At about what speeds should my 1971 Mach 1 shift gears. I believe the 3 speed transmission is a C6. Engine is a 351 Winsor single exhaust.
It now shifts into 1st around 10 mph, 2nd around 45 but not sure about 3rd.
It now shifts into 1st around 10 mph, 2nd around 45 but not sure about 3rd.