I had a 7-1/4 under my first 383 4-speed Valiant for a few weeks. But I also left the stock skinny tires on. Lots of "sound and fury, signifying nothing". 2.76 gears were fun though, I could run 1st up to 65 mph

Would have been interesting to see how long it lasted Anyway I soon got a good 8-3/4 sure-grip and a pair of Centerlines with 235/60 tires. Still hard to hook up even with 3.23 gears, so it never broke.