Full throttle at low revs with high boost spike will kill 3rd. Keep them high in revs while shifting and they will last a lot longer. Done a lot of drag race for the past 15 years and never broke a gearbox.
What do you call low revs? Is doing 70 or 80 km/h in 3rd already high revs? 70 is about 3000 rpm... But I don't really understand what you mean by keeping it high in revs. Once you have the clutch up again it's at the revs it should be, and even if it's higher in the revs, the boost will still come in with quite a bang.
