Yes I ran a 3000 stall when it was almost 14:1 CR. It was better for street driving strictly for keeping rpm's down (500 less at cruise than this one), but it wasn't the optimal converter for my intended purpose or this combo. I put in the fastest converter I could get in an 8". I think a 4000 stall would be an all around really good converter on a stroker street car. I often wonder what a 4000 stall would be like compared to this one in this same car. No regrets on this converter, I just wonder for comparison reasons.