Feel like my 440 should be faster

Stock port/valve 452 heads have me scratching my head when you have a nice size roller cam, roller rockers, etc. This is holding back your motor on power. 3.23’s got to go if you’re looking for snap your neck performance. Put 3.91’s in first and see if you’re happier with the performance, should make a huge difference. If you want to cruise on the highway, then keep the 323’s put in a mild hydraulic cam and lose the high stall converter. Just for reference, I have 411’s in my duster and a 26 inch tall tire and turn about 3200 RPM at 60 miles an hour.