I keep seeing lots of threads about briggs 5hp flathead builds in this section but not many threads with the briggs and straton over head valve engines. The briggs 6.5 ohv is the engine the animal racing engine was based off of so can use all the hop up parts made for the animal. It has just as many aftermarket parts as the briggs 5hp flathead and its a far more powerful platform to start with. I have watched mildly modified over head valve engines outrun heavily modified flatheads and in my personal opinion briggs over head valves they are far better built engines than the predators or clones. I love briggs flatheads as much as anyone but don't forget about their over head valve offerings when you want more power. especially because you can snag them used at flee markets for 50$ or less sometimes. far cheaper then any predator. lets see some over head valve builds!