Re: about to order my engine kit
Some say that the slant has a slightly higher compression therefore more power. Maybe, maybe not. The big thing about the slant is that it fits easier in tighter spaces. With the spark plug at a slant, it takes up less room. The only negative I know about the slants is that some dealers charge slightly more for them. The head can be flipped either way to make the spark plug slant forward or backward. It just depends on what works best for you.