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Author Topic: Aluminum Heads  (Read 1087 times)

Jason Goldsack

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Aluminum Heads
« on: September 11, 2009, 10:24:54 AM »

Does anyone here run aftermarket aluminum heads on there C..  nthis would not be in a racing engine.. but a mild or stock engine that I`m look for info on.

What brand of heads do you run, did you notice the difference in performance.. and how much?


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Jason

(Eileen)1965 Chrysler Windsor, 361/727/2.76 16.49 @ 86 mph

Snotty

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Aluminum Heads
« Reply #1 on: September 11, 2009, 10:40:32 AM »

I do not.  However, when we built the 401 AMC, my good buddy who races told me that Aluminum heads would be a waste of money on a motor that we were not intending on racing.  Compared to $1,500 a piece, he said a good valve job and porting would be a much better altrernative and would be a lot less money.
 
But, to answer your question, one of the writers in a magazine I recently read suggested using the Edelbrock heads on a 440 street car as the best option of cost and performance.  The letter writer was asking the same question as you.
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Stan Paralikis

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Aluminum Heads
« Reply #2 on: September 11, 2009, 10:58:15 AM »

Quote from: Snotty
I do not.  However....



 
In 101% agreement.
$2000 aluminum heads designed for 500+ HP is absurd when all you're doing is going to the local car show on Sat. night.

Stitcherbob

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Aluminum Heads
« Reply #3 on: September 11, 2009, 11:09:58 AM »

A lot of guys run the 440Source heads.....but they are made in China and can have issues with quality control.... though $899/pr  fully assembled is a pretty good deal!

http://www.moparaction.com/Tech/quest/TOTALED_440.html

http://www.440source.com/heads.htm






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Jason Goldsack

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« Reply #4 on: September 11, 2009, 01:12:52 PM »

Maybe I should get out the factory 516's out of the backroom and port them, add hardened valve seats and bigger exhaust valves. I have rebuilt 452's on the old girl right now.

Any luck with the MP porting templates? Any idea how much it is to put in hardened valve seats?


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Jason

(Eileen)1965 Chrysler Windsor, 361/727/2.76 16.49 @ 86 mph

Stan Paralikis

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Aluminum Heads
« Reply #5 on: September 11, 2009, 02:37:24 PM »

[/QUOTE]

ALL heads are cast in China now.  ALL.  No matter who you get them from.
AND, literally every head is cast by just 2-3 foundries.  So heads cast at any particular foundry may be distributed by many companies under their own name.
 
NOW, MOST of the heads are MACHINED over there, too. Some are machined here.  And the obvious way to know where they were final machined is the PRICE.
No way  can you find fully assembled heads, machined and assembled in the USA for under $1500+.
 
1 out of 5 sets of heads from 440 is not to spec.
Would I buy heads from 440?  Tempting but I'd go straight to Edelbrock...
 
 

Stan Paralikis

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« Reply #6 on: September 11, 2009, 02:42:20 PM »

OH, BTW, it's too easy to strip threads on the aluminum heads.
Aluminum has No performance adwantage.
Aluminum heads play havoc with proper tensioning of bolts ("OOPS!  %^$% I stripped the exhaust manifold stud." )
Their only advantage is weight savings.  But on a car that is never raced? C'mon, now.....

Jason Goldsack

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« Reply #7 on: September 11, 2009, 03:10:30 PM »

Weight saving also effects handling..

Last week when I pulled the lightweight M-1 Single plane off of my BB Aspen and replaced it with a factory 4 barrel intake.. the weight difference was dramatic.

Now imagine. Aluminum intake, aluminum heads, aluminum water pump, tube Sub Frame, coil over in stead of torsion bars .. etc. Can you imagine the difference the driving experience would be?

My car is named Eileen for a good reason .. I lean to the left and I lean to the right in corners.. I want to fix that also..

Any kind of weight savings would help a C considerably.




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Jason

(Eileen)1965 Chrysler Windsor, 361/727/2.76 16.49 @ 86 mph

Leaburn Patey

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« Reply #8 on: September 11, 2009, 06:26:24 PM »

Why do all that work on the small valved 516's whan you already have a good breathing set of 452's--which already have hardened valve seats and bigger valves??
IMHO,work the 452's. Economical,more bang for the buck.
 
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Stitcherbob

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« Reply #9 on: September 11, 2009, 07:07:48 PM »

the 440Source heads are heli-coiled and blind exhaust bolt holes so no coolant escapes....but I would talk to some people who run them and find out about that 1 in 5 chance they are mis- machined....

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Dan Cluley

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« Reply #10 on: September 11, 2009, 09:23:42 PM »

I'm with CBarge, what's wrong with the 452s?
 
 
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Jason Goldsack

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« Reply #11 on: September 12, 2009, 02:58:05 AM »

Compression...

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Jason

(Eileen)1965 Chrysler Windsor, 361/727/2.76 16.49 @ 86 mph

Jason Goldsack

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« Reply #12 on: September 12, 2009, 03:03:16 AM »

I was going to get the bigger exhaust valve put in... with the limited amount of driving i do with the car.. would I really need to put the hardened seats in anyways?

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Jason

(Eileen)1965 Chrysler Windsor, 361/727/2.76 16.49 @ 86 mph

Rich

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Aluminum Heads
« Reply #13 on: September 12, 2009, 06:19:21 AM »



Don't want to waste your time or money on those old 516's-(small ports, small valves) it will cost $600-800 to get them to where the 452's are now-- head work is VERY expensive.

Also, with today's witches brew that they call fuel you don't need higher compression, the 9 to 1 that you've got  is plenty.  With a little 361, aluminum heads would be a waste of money- it's just too small to need the kind of airflow you get with the aluminum heads. I wouldn't put them on a 383 either, as the 906-346-452 heads (when cleaned up with blended bowls) are all it needs. Save the aluminum heads for the 440's and even bigger stroker motors that need the added flow.

krautmaster2009-09-12 12:07:26
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Jason Goldsack

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« Reply #14 on: September 12, 2009, 07:00:36 AM »

Even with the closed chamber heads.. the compression would only be 9.5 ( I'm sure than was the factory compression for this engine) which would be fine for pump gas.




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Jason

(Eileen)1965 Chrysler Windsor, 361/727/2.76 16.49 @ 86 mph

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