432 RWHP N/A has been achieved by a 2V 5.0L Big-Bore. This car is currently the fastest N/A 2V car as it beat KenB's N/A 2V best time.
I have posted my dyno graphs and I don't feel like I need to do it again. Believe it or not, I don't really care. My car made 348 RWHP in full street trim. Dumping the exhaust and running a Power Steering Bypass belt it made over 360.
Strange, quite a few years ago, Modular Performance made 360 RWHP N/A with a 5.0L BigBore 2V that was little less radical than mine in a 5 spd Mustang. Most of the 5.0L N/A Big-Bores I know with 4V heads are over 400 RWHP. Those that are not are running stock 4V heads and cams.
Personally if the goal is over 350 RWHP, a supercharger is the way to go. I am not saying it is not. If a person wants to build a high compression N/A engine, I say let them. They do it right, they won't have an issue making 330 - 360 RWHP depending on how they go about it.
I have posted my dyno graphs and I don't feel like I need to do it again. Believe it or not, I don't really care. My car made 348 RWHP in full street trim. Dumping the exhaust and running a Power Steering Bypass belt it made over 360.
Strange, quite a few years ago, Modular Performance made 360 RWHP N/A with a 5.0L BigBore 2V that was little less radical than mine in a 5 spd Mustang. Most of the 5.0L N/A Big-Bores I know with 4V heads are over 400 RWHP. Those that are not are running stock 4V heads and cams.
Personally if the goal is over 350 RWHP, a supercharger is the way to go. I am not saying it is not. If a person wants to build a high compression N/A engine, I say let them. They do it right, they won't have an issue making 330 - 360 RWHP depending on how they go about it.