It was a 9 inch that Dynamic built to the specs that I gave them. I never checked to see what rpm it would actually stall or flash to. I launched the car at 3000 rpm.
Mine pulled easily to 6000 and beyond. I contacted Mopar Performance and they told me that 6500 was the redline for that motor. I found my best et's shifting at 6000.
I have a 73 Duster that used to have a 380hp crate motor in it. It had a 9 inch converter, 3.91 gears, Holley 750dp, and a race weight of 3310lbs. The best it ran was 12.30's.
My engine builder did put spacers in the stock magnum lifters making them solid. We are running the now solid lifters with a Crane hydraulic roller cam. The engine is turning 7000 -7200 rpm in the traps.
Original 14 inch steel wheels (5 x 4 BP) with dog dish hubcaps from a 73 Duster and the original spare wheel and tire from the same car.
Asking $350 for all.
They are located in North East Ohio.