Preparation Heat oil in heavy large pot over medium heat. Add onion, garlic, chili and oregano to skillet. Sauté until onion is tender, about 6 minutes. Add clams with their juices and cream. Simmer until sauce thickens slightly, about 4 minutes. Add pasta and 4 tablespoons basil; toss until sauce coats pasta, about 2 minutes. Season with salt and pepper. Transfer pasta to large bowl. Sprinkle with remaining basil.
Preparation Heat oil in heavy large pot over medium heat. Add onion, garlic, chili and oregano to skillet. Sauté until onion is tender, about 6 minutes. Add clams with their juices and cream. Simmer until sauce thickens slightly, about 4 minutes. Add pasta and 4 tablespoons basil; toss until sauce coats pasta, about 2 minutes. Season with salt and pepper. Transfer pasta to large bowl. Sprinkle with remaining basil.