22GT, why do you keep referencing the 69 and later shifters? This is a 66 coupe. The problem is he has a green dot shifter in the car. He needs to swap to a 67/68 shifter. I had the exact same issue when I bought my car. I thought the Tranny was bad until I realized it had a later model valve body.
Compare the shifter posted above to this one:
You can clearly see the difference in the shift pattern.
68 289 convertible Candy-apple red & white
66 200 coupe Blue
94 GT convertible Red & black
98 GT convertible White & black
98 V6 convertible White & tan
Last edited by Flade; 09-30-2016 at 12:47 AM.