I usually have Oozaru Vegeta > 40k, but looking at the line I think he could be less than that.
Chapter: 233 (DBZ 39), P11.3
Goku: “Even if I raise the Kaio-Ken to x5, it still won't have any effect on him!!!!”
Goku is talking about his current condition, not a hypothetical healthy state. Goku did pretty well with the Kaio-Ken x3 and doesn’t seem to struggle with x2 when dodging Oozaru Vegeta, so his limitations should be about the same from when he was at full power.
So yeah, maybe Oozaru Vegeta could be 30k or so. He fights pretty evenly with Gohan post Oozaru. Not sure if Goku blasting his eye cut his power though.