Visit this site :
Sequoia & Kings Canyon National Park - Summer Activities (U.S. National Park Service) IMO, its all the things you need to know.
When you're paying for the pass, you might want to ask if you can upgrade later to "annual pass" if you like the place($10 additional).
Safety
The place is beautiful, the sceneries are very luring. Please be very careful when near waters/rivers. The current is very fast and very dangerous this year because of the above average snow melt...for safety, we can't go beyond our expertise.
Have fun!! and hey, since you have the V8, climbing up to 7,000 ft el. is a walk in the park. enjoy.