The Scots will take on the host nation, as well as Samoa and Italy, in what is expected to be a physical and challenging competition. But, having sealed a third-placed finish in the 6 Nations, Kellock believes confidence should be high going into the tour.
The Scotland lock told Press Association Sport: "There are quite a lot of new caps, quite a lot of young lads coming in, so it will allow them to get experience as well, which is exciting. It's a great place to tour, South Africa is a fantastic country and, to a man, every one of us is looking forward to getting over there."
"Samoa and South Africa are two of the most physical teams you will play against and then we will see what happens for the third game. The most important thing is to go there and keep the performance at the level it was at the 6 Nations. If we are good enough on the day, we will win them."
The forward is one of a number of Glasgow players represented in the squad and he says their confidence will be high following a club season which saw the Warriors reach the RaboDirect Pro12 play-off semi-finals.
Kellock said: "We have to use the momentum we've built up over the season at club level. It's great to have so many of the Glasgow boys in this set-up. I expect them all to do incredibly well."
Meanwhile, Kellock believes the appointment of Vern Cotter as head coach proves the national team is on the right track.
The Scottish Rugby Union confirmed this week that Cotter will take over team affairs in June 2014 when his contract with Clermont Auvergne expires. The 51-year-old was the SRU's top choice for the job and he will bring with him an impressive CV, which includes winning the French title in 2010.
As far as Kellock is concerned, being able to land their number one target shows Scotland are a nation on the up. He said: "His pedigree speaks for itself. He has an exceptional resume. I know enough about him to know he will be very good.
"We are in a very good place as far as moving forward is concerned. We finished third in the 6 Nations and I think it's a good time for Scottish rugby. To get a head coach like that shows the position we are in."