Factory HEMI Head!

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whitepunkonnitro

whitepunkonnitro

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Take a look at this 1940's factory prototype inline 6 Hemi head.
I've never seen this before, but just eyeballing things up, it looks like it would be almost bolt on for a Slant.
Anybody have more info on this jewel?
16603087_10209988135434915_9116543704707192692_n.jpg
 
i thought they went into production Australian market mopars?
 
The only HP slant head I am aware of is the closed chamber Argentine head like Doug Dutra has.
 
looks more like a head for the flathead six not the slanty. Here is a picture of a flathead six to compare

dodgeroadster3.jpg
 
Very cool to see, totally unworkable for the slanty for a multitude of reasons, but badass if you've got an old flathead in your business coupe! 1st is the cylinder spacing, a pair
of three's instead of three pairs, and definitely not the same gaps. Pushrods, Geebuz, I don't know where to begin & end that one! Where did You dig that up? I always love
seeing these types of things, Olds 4valve heads, I got totally lost on this page for days reading this.........
Automotive Industries
 
Killer6 said:
Very cool to see, totally unworkable for the slanty for a multitude of reasons, but badass if you've got an old flathead in your business coupe! 1st is the cylinder spacing, a pair
of three's instead of three pairs, and definitely not the same gaps. Pushrods, Geebuz, I don't know where to begin & end that one! Where did You dig that up? I always love
seeing these types of things, Olds 4valve heads, I got totally lost on this page for days reading this.........
Automotive Industries
Click to expand...
Look again..cylinder spacing is a pair of 3s.
The space over the cam is just about the same width as a Slant...the pushrods would work just as they do in this head
 
The slanty is three pairs, the gap is wider between 2&3 and 4&5 at the location of the main webs.
 
Not saying that this exact head would or could be used on a Slant, but the concept is adaptable.
Someone with the ability to cast a head and fab the rocker gear could very easily build one of these to bolt onto a standard slant block
 
whitepunkonnitro said:
Not saying that this exact head would or could be used on a Slant, but the concept is adaptable.
Someone with the ability to cast a head and fab the rocker gear could very easily build one of these to bolt onto a standard slant block
Click to expand...
LOL! I'll just warn You that bringing this up on .org will be called beating the deadest horse that has ever been dead, and other things, just FYI:rolleyes:
We discussed this in the "aftermarket aluminum head" thread in the engine forum, the pros & pitfalls etc. have been laid out, but there isn't enough
consensus on what it should be, and too small a market to be divided about it. I have ideas however......................
 
69_340_GTS said:
Where do the pushrods go through the head? Looks like the holes for them are missing.
Click to expand...
It appears they are at the edges of the chamber, non-symetrical because of differing angles and rocker arm positions int & exh. Also probably originating from the
area where the valve guides in the block are with a nail head tappet & cup set-up?
 
Looking at the chamber side they are below the "deck" face section, looking at the top side the head is "rolled" towards you, so it looks like pockets above the boltholes
in the shadows. That's My impression, kinda shadowy images..............
I think the intake rod holes are hidden by the rocker shaft(top).
 
Last edited:
barbee6043 said:
just wondering, how much hp does the Aussie hemi head make? is a copy of it the best idea?
Click to expand...

There is no Aussie Hemi head for the Slant-6. The Australian "Hemi-6" engine is an unrelated upright inline-6, and the "Hemi-est" thing about it is the name; in actual fact it's not a hemi-head engine.
 
barbee6043 said:
just wondering, how much hp does the Aussie hemi head make? is a copy of it the best idea?
Click to expand...
No, the best idea is building an improved aluminum slanty head from scratch, and again there is no consensus on what it should be. If You design a cross-flow type head, the
market will be tiny, and it would be foolish not to go 4-valve at that point. Or, more practical, design an improved version that will accept std. manifolding, flow better, have
an improved chamber, and of course weigh a good 30+ pounds less. I am working on ideas that would permit flexibility between stock apps & very hi output projects, but
ideas are a long, long way from reality. Time,$$$,R&D,& collaboration are all needed for anything to get close to happening. Lately I haven't haven't had much of any of these!
 
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