3V heads (was Re: [DeTomaso] 2V heads0

[Asa Jay Laughton]

What about the Aussie 3V heads?

Asa Jay

MikeLDrew at aol.com wrote:
> In a message dated 1/10/07 15:50:30, ehpantera at yahoo.com writes:
> 
> << Does anyone have any experience with the Aussie closed chamber 2V heads? 
> What RPM are they good to? Is there much improvement over 4V heads in a stock 
> '73 engine. >>
> 
>>>>The answer is, 'that depends'.  2V Aussie heads have the best of both 
> 
> worlds--the quench combustion chamber of the early 4V heads, and the smaller 
> intake/exhaust port size of the 2V heads.  They are torque monsters, great for 
> developing all kinds of lunge from down low.  However, they reportedly are flow 
> limited and sort of poop out around 6000 rpm or so (with some notable 
> exceptions--these are broad generalities I am offering up).
> 
> If you have a fairly ordinary motor, with a decent cam, but no crazy 
> modifications, switching to 2V Aussie heads and a matching intake will probably result 
> in a great increase in perceived torque, and maybe some increase in 
> horsepower.  It will 'feel' much faster.  I have driven a Pantera that had Aussie heads 
> installed atop a stock bottom end (stock cam), and it was notably snappier 
> than most other Panteras I've driven.
> 
> If you choose your components wisely, you can build a monster motor with 
> these heads (like Charlie McCall's, or Larry Stock's.)  But if you want to spin at 
> 7000+ rpm, early closed-chamber 4V heads are probably a better bet.
> 
> Personally, if I didn't already have a set of Aussie heads in-hand and wanted 
> to swap, I would probably install Edelbrock heads, which give all the 
> advantages of Aussie heads and more, plus lighter weight, and not much more cost.
> 
> Note that 2V American heads (open chamber) suck.  They make great wheel 
> chocks however. :>)
> 
> Mike
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-- 
Asa Jay Laughton, MSgt, USAFR, Retired

& Shelley Marie
Spokane, WA

1973 Pantera L 5533
[ASASCAT]

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