That's a true test. Pulled it, made the mods, and put it back in. It looks like the smaller cam would be good for pretty much anything. The 268 would be fun for a car that may use that rpm and even more fun with a bigger converter and rear gear. The converter and gear wouldn't do anything for the horsepower but it would be more usable and it would make the car go faster. a intake carb and small cam adds 100 horse . Nice!