All Small Six Ford 200 Performance build help

[akidwithacar]

Hello, I have a 65 with a 200 that is the factory motor, I had to remove it because the head broke in the common spot and caused an exaust and oil leak. With the factory motor out and the head broken I see this as a perfect time to rebuild it and upgrade it. As the head is broken I would need to replace it anyway. An aluminum head would be nice but thoes are incredibly rare to come by So I was exploring other options. Could I just modify a US head to have increased airflow? What is the difference from the Aussie head and the US head? I have heard people say to not use an Aussie 200 head, but a 250 head. Not much info on it out there that I could find. My goal would be around 400 horsepower, As I have seen before on these motors. I figured to switch to a four barrel, or a voodoo manifold I saw on youtube with 3 one barrel carbs on it, I thought that was cool. Any advise? ideas? suggestion? any info for more power?

 

[gb500]

So you're aiming for 2hp per ci?
1hp is more realistic

 

[TrickSix]

Walk before you run boy! What is the condition of the rest of your car? Are the brakes, tires, suspension, and seat belts capable of supporting a 400 hp motor? Do you have the fortune it will take to get there? Buy a copy of the Falcon Six Performance Handbook, and read it, it will be your best investment.

 

[akidwithacar]

Walk before you run boy! What is the condition of the rest of your car? Are the brakes, tires, suspension, and seat belts capable of supporting a 400 hp motor? Do you have the fortune it will take to get there? Buy a copy of the Falcon Six Performance Handbook, and read it, it will be your best investment.

Everything is new. Entirely new brake system with a dual, planning on putting discs on it as well, I have put in seat belts with a shoulder strap. It is mostly new parts. This will not be done for a while so I dont need to rush anything. and thank you I will pick one of thoes up

 

[akidwithacar]

So you're aiming for 2hp per ci?
1hp is more realistic

I have heard of people getting around 400 with these motors turbocharged

 

[pmuller9]

I have heard of people getting around 400 with these motors turbocharged

The naturally aspirated practical limit with a ported aluminum head is 300 hp.
The power band would be from 4000 to 7000 rpm.

You are correct. Beyond 300 hp requires either turbocharging or a good centrifugal supercharger.
Here is a good example of a modified stock head making a lot of power with a turbocharger.
https://fordsix.com/threads/turbo-200-build.74307/post-571218

It is recommended to use an aftermarket connecting rod with a custom forged piston.
The crankshaft can be turned to use the Toyota 1jz rods

1JZ Connecting Rods | Molnar H Beam 1JZ Turbo Rods

Toyota 1JZ rods Molnar Technologies street, high performance and racing H Beam 1JZ connecting rods including PWR ADR big boost turbo and nitrous rods.

molnarrods.com

If you can find a 250 2V head it would make the job a lot easier.