Depends what's the combo but it's about 450 rpms more than a 3.55 gear so closer to 5000 rpm @ 100 mph.
It's just seem like most think one size fits all or at least has the same effect no matter the cid, eg.. a 225 vs a 440 both making 300 hp the 225 would basically need to be about twice as deep as the 440 gear to be on par.
