AJAX Response Size Limit

I am using AJAX to asynchronously call a PHP script that returns a large serialized array of JSON objects (about 75kbs or 80k characters). Every time I try and return it it hits a 3000 character limit. Is there a maximum size set anywhere on servers or within jQuery's ajax implementation?

EDIT: the 3'000 limit is a Chrome limit, FF has a 10'000 character limit and Safari has no limit. I'm guessing there is no fix for this apart from changing my code to split/lessen the return data.