I read an article a few years back that they had determined an ancient tsunami that hit Australia had reached 500 ft. It was believed to have been caused by a landslide on one of the Hawaiian islands.
http://www.rense.com/general20/comingonedayg.htm
Quake caused tsunami height is going to vary based on size and location of the quake and the topography of the target, above and below sea level. This was a 9.0 quake, the largest recorded quake was 9.5 and the theory is they can’t be much larger than that. Landslides into water produce big splashes. I’m not sure they’re technically counted as tsunamis. They can be very high, but IIRC are more localized. One in Alaska, back in 50s or 60s, was documented to reach 1400 feet. It wiped out all the trees that high up! Pictures were shown on History or a similar channel. I believe Japan has a 100m ‘splash’ wave on record from such. The biggest waves probably come from asteroid hits. IIRC the dinosaur killer that hit the Yucatan’s wave carried into Texas.