dual 460cc engines

[Powercat]

I am working on a couple of applications to use twin big block engines for a high-performance power source.
Thinking of starting with the Wildcat 460 base engine from EC Carb. I saw on YouTube a review of the
Predator 459 Max Perf engine, and saw it has a hemi head configuration. Are the heads all the same pattern
and interchangeable between like Duromax 440, Predator 459, Wildcat 460, or Honda GX390 ? I know there
are different valve cover configurations on them, but thinking of mostly the head to block bolt up.
For now the plan is to build the engines to give me reliable power in the 30-40 hp range. Later I may go the
bore and stroke to take these up to 500cc but not initially. Right now I have not found a source for a 459 head
from a parts source. I like the Wildcat 460 to build from as it has the 10 bolt block, and a 4 bolt valve cover.
The pressurized oil system on the Predator 459 is cool, but many strong engines up to 50hp have been built
without it. Looking for someone with experience on these big block engine for high performance.

 

[Hellion]

Are the heads all the same pattern
and interchangeable between like Duromax 440, Predator 459, Wildcat 460, or Honda GX390 ?

It is possible but I doubt it. I vote you be the guinea pig, try it (buy all those engines), and report back with your results!

 

[Hellion]

I, for one, see a pressurized oil system and go OH YEAH. That is the lubrication system you want, in my estimation.

 

[panchothedog]

You could build any of the big blocks to 30 horsepower. Boring and stroking it is not the most economical or practical way to get it done.