Non-athletes need only around .8grs of protein/lb of bodyweight & weight-training athletes need at least 1.3 grs/lb of bodyweight. So if your eating 325grs @235 lbs (about 1.4grs/lb)-- your not getting too much.
Also, the absorbtion of protein really depends on how you get it-- whey protein isolate is prob the highest at 98%. The liver/kidney failure argument that Dave posted only effects people w/that pre-existing condition...not healthy athletes.