What are, in your opinion, the top 5 engines ever produced and one-offs count. F1 engines, production engines, concept engines (so long as one was built), Strickley racecar engines, anything. What are in your opinion the top 5 preferable with reasons why.
1. 1969-1970 Ford Boss 429 OHV V8 This engine was built to battle the dominant Chrysler Hemi engine on the NASCAR circuit. Its got Wedge style heads making it a "semi-hemi" so it reacts to high boost like a hemi with just as little problem. With a stock block and heads you can bore and stroke it to over 800 cubic inches, the biggest I've heard of was 830ci. The stock intake ports could almost swallow a tennis ball. All this and the factory expected people to believe it had only 375hp.
2. 2005 Bugatti 8 Liter DOHC W16 What a marvel of engineering. 16 cylinders compacted into two very thin V8 banks on either side along with aluminum and magnesium wherever possible makes the engine as light as a cast iron V8. It makes 1001 hp and 1250 nm. It has an F1 derived oil system with high power oil pump on block. It has 4 small turbochargers that give the engine enough boost to eliminate the lag a turbo has giving the engine strong torque during acceleration.
3. The Offenhauser DOHC 4v 4cylinder This engine dominated indy racing for nearly 30 years. The engine was able to make more power than the competitors and rev higher. 15:1 compression, and 420 hp with little tuning made this one of the greatest racing engines in history.
4. The Hemi in all forms Think of it, what engine drove the most powerful musclecars of the 60's and 70's? What engine is used most in every drag racing class? What is the most famous engine to car guys and others? What are the most powerful piston engines in the world? The domed combustion chambers and piston just ate up as much boost as you could shove into it easily making more power than a normal engine would, combined with the EXTREMELY STOUT early chrysler hemis they could handle much more punishment and last half again as long with 2 times as much abuse. Its a Hemi. Nuff said.
5. Chryslers 1964 Turbine engine Able to run on anything that burns, made 425 hp at idle, and whined like nothing else. It was compact and lightweight. It could be moved back further to the middle of the car to better handling and the only bad thing about it was the exhaust temperature was 1200 degrees! Instantly killing the grass beneath the pipes and often singing the hairs on the legs of anyone who got to close.
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Originally Posted by rev440
) BUT this is a cool video, the intake turbulence is beautiful 
the full vid is at 
