Hot Rods Ardun head question

Do Ardun heads use the same amount of head bolts as in the flathead block?
gbritnell

 

I know zip about Ardun heads, although I really like the look. That said, I would think they need to fasten exactly the same as the flathead, i.e., utilize the existing bolt pattern in the flathead block?

 

On mine it looks like less . Compare a flathead head gasket to those of an Ardun .

 

32 Barn Car,
Man that is a beautiful sight!
When the Ardun Conversion is added, what is the approximate H.P. increase?
I have always been curious to what it added to a stock Flathead.
Thanks!

 

The engine was built by Ardun god Cotton Werksman , was far from stock , 284" with a Merc crank , Howard cam , a mag and 6 Stromberg 97's .

 

What's done with the existing valves in the block?

 

Put them in another engine as the push rods have to go through that space.

 

Don Orsco from calif had the ardun heads retooled with many improvements in quality.