[Sneds 67 GT]

Just thought I would enjoy the GT today, with my usual "spirited" jaunt through the countryside. Well, on "turn 4" of my usual river road journey, the rear end snapped around faster than I could stay on the steering- the car bounced backwards about 40 MPH, through a plowed field, and the car came to rest about 75 feet into the field. Luckily, there is little to no ditch, and I was able to drive the car out of the field, a little muddy. No vibrations and the car tracked like nothing had happened, very strait. Other than crappin' my britches, my question is if I hurt the motor. During the brief off road, my foot was as hard on the gas as the brake, as I was in a panic to get it stopped. I flashed a glance at the tach, I believe it was about pegged, I have no idea what RPM I hit, but I have never heard it scream like that before. Alot was happening in those brief few seconds!!!
What can I expect if I "spun" the motor to fast? Would I already have problems, or is this something that may take a bit to surface. The oil was at temp, and the rev was for a brief second or two. Everything seems fine so far, drove home about 7 miles or so with no abnormal sounds or vibrations.
Sprayed some mud off from under the car, there seems to be no damage, changed my pants and had a drink. At least now I know thats a second gear corner.