With my heavy vert and slowmatic, I've never had a problem with traction. When I installed LT headers and o/r x-pipe, I thought that the additional power might make it difficult to hook-up. So, I installed Steeda rear lower control arms. At first, the additional power made my rear tires spin and even slide sideways. To be honest, this was kinda fun but I was wondering about the LCAs. I thought that maybe I would need to purchase some drag radials. But, one week later my tires hardly spins at all. From a dead stop, my car just takes off. There is not even a second gear chirp. So, back to my original question: Is there a break in period of LCAs?