I dont remember the wheel base on a E-body but without
checking a few thing I would think they can pull
them the highest.... without tearing up the assend.
What you have to look at is 2 factors... 1, is the
wheel base... 2nd is the departure angle... this is
the angle from the bottom of the rear tire to the
closest point that will contact the ground on the
back of the car (we use this angle when designing
cars for coming off of car haulers). On a E-body
the tire is fairly far back and the splash pan in
the rear slopes under pretty good. Also a car that
has a good bit of body seperation in the rear will
have a greater departure angle(like a leaf spring
car does)