No no, sorry, should have clarified. I pulled the 318/904 combo from the 85 Chrysler, and dropped it in the Dart. Have an 8 3/4 with 3.23's in it. When driving, I remember 3rd gear would start to rev higher, then kick down a little making the RPM's a little lower.
The Valiant has a 7 1/4 with somewhere around a 2.90 gear.
I'll check both those areas on the transmission though.