Re: Aluminum vs. cast iron

[Don Dulmage <big-d@xxxxxxxxxxxx>]

The performerRPM is more than a weight issue. vic and hs crew worked on it 
for a couple years. I saw a early version once when talking to a rep. The 
power of the Perf RPM is within spitingdistance f the very best single plane 
for top end. The characteristics torque wise are phenominal. I recommend it 
often for any OR builds since it has the fattest power band of all. More 
average hp boost throughout the entire RPM range. So if your AVERAGE HP 
boost is higher than the competitions , unless their peak is exceptionally 
high er than the other the highest average hp boost will be the quicker car 
even when the highest peak may be slightly faster (MPH vers ET MPH means 
faster  Quicker means ET) We hae installed a Performer RPM on a 72 
Challenger 383 4 speed. It had first a stock 383 4 bbl then a wiend action 
plus. Denny who owns it says there is absolutely no comparison. The car is 
much faster quicker and runs much better with the Perf RPM. Oh yeajh , it 
fts under the stock hood to no trouble. It is higher than stcok but still 
enough rom Pf course our 62 to 65s are like a cavern compared to the 70 
challengers and cudas so it should be no trouble there either. Bill Parsons 
Black 64 Dodge which some of you saw a Carlise runs one on its 440 OR build 
too. No trouble hood wise. Very smooth powerful engine with no bad habits. 
Bill runs an 800 AFb on his. Denny has a 750 AFB on the Challenger. In my 
humble opinion Vics Performer RPM plus is an exceptional manifold and raises 
the bar so to speak on dual plane design. It is very well suited to our BB 
mopars.
Don


----- Original Message ----- 
From: "Steve Chervinsky" <63hemipolara@xxxxxxxxx>
To: <1962to1965mopars@xxxxxxxxxx>
Sent: Friday, March 27, 2009 9:17 AM
Subject: Re: Aluminum vs. cast iron


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Single plane is best for higher RPM but less torque and dual plane for
torque. Rally the difference from cast to aluminum is weight, also
ease of porting if you want.

Magnesium are good too, but 1 backfire and they are usually toast.


On Fri, Mar 27, 2009 at 6:48 AM, Gary H. <spigot2039@xxxxxxxxxxx> wrote:
> Check out "Mopar Intake Manifold Shootout" here:
> http://www.hotrod.com/techarticles/hrdp_0801_mopar_intake_manifolds/edelbrock_performer_rpm_manifold.html

> > Who makes the performer RPM ? How is it for torque and what is the best 
> > rpm
> > range? Is it single plane or dual plane? I have a 413 engine. Thanks for
> > any input................MO...sw iowa

--
Steve
'63 Hemi Polara

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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.