Sorry- but there is no direct correlation of horsepower to speed. A large bulldozer may have a 1,000 horsepower engine, but only move at a top speed of 10 mph. A drag racer with a 1,000 horsepower engine may move at 300 mph. It comes back to the gearing, torque of the engine, weight and streamlining of the vehicle. A 500 HP sports car might have a top speed of 160 mph.
400-500 hp
About 500-600mph
I reckon about £400-£500 if in decent condition
I was offered $400 for my 79 Chrysler 6 hp. Only paid $500 for it 20 years ago.
400/500 = 400 ÷ 500 = 0.8
Most passenger jets fly at a speed of 400-500 knots.
500
It's a 426 with a 400 hp supercharger and a 727 transmission,
400
It is closer to 500.
400 + 500 = 900
(((800 plus 400) plus 400) plus 500) plus 500 = 2600