Re: Manifold/header comparisons PART of the answer

[Chris Davis <pngkid@xxxxxxxxxxxxx>]

I would guess the cam used determined the optimum rpm.
The engine used was a stock style rebuid 440 Magnum with 850 Holley, 
Holley Street Dominator intake, and ported MP Stage V heads, with a 
CompXtreme Energy 274 degree cam (.488 intake/ .491 exhaust)with a 
complete Comp valvetrain . (With stock 906 heads and stock valvetrain 
the engine produced 464 hp at 5400 rpm and 523 ft-lbs a 3800 rpm.)
With the Stage V heads and Hooker 1 7/8 Headers it produced 500.6 hp at
5400 rpm /538.1 ft.lbs at 4200 rpm as compared to 492.3 hp at 5400 rpm / 
536.7 ft.lbs at 4200 rpm with the Hedman Elite 1 3/4 Header as noted in 
my last post.

Sean B wrote:
> I'm just curious:  Why did all three reach peak HP at the same RPM?  I'm 
> not doubting the magazine; it just seems odd.  Any engine builders out 
> there?
>
> Polecat
>
>
> C. Davis wrote:
>
> > Hedman Full length Elite, Hedman Shortie, 440 Magnum iron stockers peak 
> > horsepower with all three came at 5400 rpm
>
>
>
> ----
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>
> '62 to '65 Mopar Clubhouse Discussion Guidelines:
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----
Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

'62 to '65 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html. 

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