what is the oil capacity with a standard filter on a SBC crate motor? Its a 260 hp base GM crate with what looks like the stock steel pan. I just changed the oil and added 5 quarts and a new filter, and the chrome dipstick reads about a quart low, maybe a bit above that... Is what is the stock capicity with a filter? I've heard 5 quarts, and I've also heard 5 and a half with a filter... let me know, i don't want to overfill it, but i don't want it under either.