418 12.5 compression. Decent eddie heads. Middle of the road flat tappet(260@50) suitable gear and 8 inch vert
Car will live between 5000 and 6600-6800 on the track.
Maybe an honest 530-540 ish horse
You don't need annular boosters in a drag car 4150 carb. They can help out a lot in a street/strip car since you can pick up a ton of bottom end torque with the annular boosters but the downleg boosters typically make a bit more top end power. If you running down the track between 5000 and 6800 RPM then I think a down leg booster would work the best. Best place for annular boosters in a 4150 carb would be a big venturi carb with a big cam in a street engine. In that situation the annular boosters will be a good crutch. I've seen dyno tests where the annular boosters will add 50+ ft-lbs at part throttle over a downleg booster. But by the time you get to 5000 rpm the difference is gone.
