Re: IML: Aluminum Heads on an Imperial 413/440 ???

["sjak brak" <imperial1973@xxxxxxxxx>]

>> The Alum heads, alum intake and etc 
will make an difference on an much lighter Dodge Dart being used for the drag 
strip, But this is not an Dart Drag Strip Site.

The effect of performance parts does not depend on the weight of the car, and is therefore not restricted to Darts and/or racing cars. (o and I did take my Imperial to the strip earlier this year) However, the weight of the car will influence the choice of cam profile because you want more low end torque on a heavy car in order to maintain driveability.
As for intakes, there are very good aftermarket intakes that operate way better in the idle-6000rpm range than the stock pieces. Of course, its the whole package that will take it to the next level. An Imperial with an engine with the power curve shifted to higher rpms would also require a higher stall speed on the torque converter, etc.

>> there 
is the P4286675 cam assembly waiting for you at your driving speeds.

And what would be my driving speeds according to you? Just that you think it works great on your car doesnt mean it is the only way to go. The package on my engine works great for me, better-than-stock economy and performance (although it annoys me that it starts to cut down on the highway above 180km/h/113mph) but I would not recommend it before knowing what the purpose is for the person asking about it.
Regarding the P4286675, it would indeed be perfect for a sunday convertible cruiser. I'm not in the market for a cam right now since I'm not sure what
to do with the engine in the long term (keeping it naturally aspirated or
adding turbo's). If I decide to keep the car n/a, I would likely choose a roller cam with more lift and duration and a sharper lobe profile.

On 10/22/07, RODGER D. REDDISH <FltSgt@xxxxxxx> wrote:

Hola All

 

This series of posting on alum heads, alum intakes and the such seems use-less to me as some another's have already stated.

 

Other than some lessor pounds of weight ( less some 10 pounds vs the 5,000 pounds of the vehicle ), what is the advantage over an OEM factory intake and the power or torque produced at the user RPM's or MPH. Case Closed.  Do they produce power & torque where you drive at, or at the mid to upper RPM's ???  Case Closed.

 

If one  was to go beyond the original heads of the 375 horse powered 440 and the feeling of greatness of the first heads of that era, and move on to the last series of heads the MoPar Engineer's had issued.  The MoPar Performace Tech Line will also state the last series of heads flow better than the  1967 era heads.  If you was to compare the last series of 440/400 heads with the cast number ending in 452 with the older heads on an flow bench, then what. 

 

If you was to port any of the OEM 383, 400, 413, 426 wedge or 440 heads that you already have of any year with MoPar's P4120437 Porting Template and compare them with a set of E-brock Alum heads on the flow bench ... and cost, then what.  Case Closed.

 

Another mix-match is using the P4452783 cam assembly when there is the P4286675 cam assembly waiting for you at your driving speeds.

 

When you get dressed to go out for the evening do you wear poka dots and stripes just because the both fit ???  The Alum heads, alum intake and etc will make an difference on an much lighter Dodge Dart being used for the drag strip, But this is not an Dart Drag Strip Site.

 

Rodger & Gabby

COS

----- Original Message -----

From: sjak brak

To: mailing-list@xxxxxxxxxxxxxxxx

Sent: Saturday, October 20, 2007 6:00 PM

Subject: Re: IML: Aluminum Heads on an Imperial 413/440

The weight advantage on our cars is mainly the ease of installation; for the same reason, I never put back iron intakes on my cars. If I pull one, an alu intake goes back.

And come to think of it, now there are also alu heads which are identical to stock heads on the outside, and will work with stock intakes and exhaust manifolds, check www.440source.com

Other brands alu heads will require some or more modifications. Indy heads wont work with stock intakes, Edelbrock heads do but have spark plugs unaccessible if youre not using headers, B1 are full out racing heads, etc. But if youre into serious performance, aftermarket heads are a must. The flow from stock heads is limited. Also, rebuilding a worn out 40 year old pair of cilinder heads will cost more than a set of new Edelbrock performer heads (depending on where you live, in Europe, decent machine work is very expensive). And remember that the 915 and 906 heads were very fine performance heads in the sixties, but Big Block Mopar technology steadily advanced since then.

But on a stock engine, alu heads offer no real improvement. For blocking the exhaust crossover, there's a nice valleypan gasket set from felpro, cheap and very easy to install.

On 10/21/07, Kenyon Wills <imperialist1960@xxxxxxxxx> wrote:

Well, keep in mind that there is that WEIGHT ADVANTAGE
where you can save 100lbs off of your 5000 lb car.
Maybe I spoke too soon on that?

-K


--- Rob van der Es < R.vdes@xxxxxxxxxxxxxxx> wrote:

> Hi Kenyon!
>
> I like that last option, since my 60 Imp is almost
> finished now I was
> looking for other ways to throw my money around :)
> Your kind suggestion set my right on track LOL
>
> Have a nice (fast) weekend with your favourite
> woman!
>
> Robert
> ----- Original Message -----
> From: "Kenyon Wills" < imperialist1960@xxxxxxxxx>
> To: <mailing-list@xxxxxxxxxxxxxxxx >
> Sent: Friday, October 19, 2007 6:52 PM
> Subject: Re: IML: Aluminum Heads on an Imperial
> 413/440
>
>
> Profit to grief (cost) ratio is out of whack in my
> book.
>
> Have what's in there redone if you're concerned
> about
> the lead thing (I'm not, since there are so many
> un-rebuilt cars from before unleaded still running
> around just fine).
>
> You can block the crossover passages pretty easily
> with a gasket or metal shim.
>
> Spend the money on a new water pump/hoses and redo
> on
> your radiator and your engine will probably run
> cooler
> and be that much more dependable.
>
> If you've already done that, go spend it on women
> and
> fast living.
>
> You'll get a marginally higher payoff that way.
>
>
>
>
> -K
>
>
>
>
> Kenyon Wills
>
>
>
>
>
>
>
>
>
>
>
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>
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>
>
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Kenyon Wills























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