AMC 327 - 443 CID Rambler V8

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jcisworthy
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Re: AMC 327 - 443 CID Rambler V8

Post by jcisworthy » Sun Jun 25, 2017 4:56 am

amcenthusiast wrote:Sorry Carnut1 I'm too poor right now to pay for flowbench stuff -sure would like to though.

I know there is cost in shipping but if you send me the heads I will flow them for free.
There is no place like this place, so this must be the place
Freedom Village
https://www.freedomvillageusa.com/

http://www.rbjracing.tk

pdq67
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Re: AMC 327 - 443 CID Rambler V8

Post by pdq67 » Sun Jun 25, 2017 5:34 am

FWIW, Charlie said that he would do his thing on my new EQ 50 cc chamber big valve 200 intake port heads for free IF I could afford to send them to him.

I would like to, but the shipping charges are a bitch!

I told Charlie that as little as I know about this stuff, my heads as received are BEAUTIFUL and don't need touched, but what do I know??

I have never seen prettier heads after looking at -461 or -601 heads..

pdq67

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Re: AMC 327 - 443 CID Rambler V8

Post by amcenthusiast » Sun Jun 25, 2017 12:46 pm

Thank you jcisworthy for the good will... wow, define 'comradery'.

Pdq67, I know the feeling. -There's nothing like knowing you've done your best. After that, it feels like standing on a hilltop. Mr Pride and Mr Doubt might want whisper in your ear to upset your balance; either way you could slip. Mr Bliss knows how to stand there and enjoy the sense of accomplishment, soaking up the view.

--------------------------------------------------------------------------------------------------

I think maybe half the people who participate on forums are not looking for long articles to read.

At the same time it's very tempting to write a long technical essay on:

1) Why high velocity ports are good?

2) Why 'heat management' cannot be duplicated on a flow bench?

Exhaust heat is not a critical factor in order to understand an exhaust port?

-------------------------------------------------------------------------------------------------

I'll just post pics of the exhaust port work next, space and time permitting.
XRV8 Race Parts > for AM's '56-'67 Rambler V8: http://amcramblermarlin.1colony.com/favorite_links.html

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Re: AMC 327 - 443 CID Rambler V8

Post by pdq67 » Sun Jun 25, 2017 2:25 pm

amcenthusiast,

My new EQ heads are that pretty a port heads!!

I have -306's, -601's and -461 real fuelie heads as well as -462 heads and so can compare them here. Oh, I forgot my lone -041 head..

pdq67

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amcenthusiast
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Re: AMC 327 - 443 CID Rambler V8

Post by amcenthusiast » Sun Jun 25, 2017 9:37 pm

Ok... I've got a lot of work to show how I modded these stock '64 Rambler V8 heads to work on the stroker 443... before we compare, gimme a million years ok? -just kiddn'

First thing to do when someone says 'you can't make that old Rambler V8 head work for 443 CID' is 'open 'em up' to get in there with some porting tools.

-gotta 'open the doors' to get in > starting with throat cuts & top cuts, done the 'old school way' (low cost, but labor intense... helps to make your own lathe to make a low buck precision pilot):

[img]
throatcuts.JPG
topcuts1.JPG
topcuts2.JPG
topcuts3.JPG
[/img]
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XRV8 Race Parts > for AM's '56-'67 Rambler V8: http://amcramblermarlin.1colony.com/favorite_links.html

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Re: AMC 327 - 443 CID Rambler V8

Post by amcenthusiast » Sun Jun 25, 2017 9:43 pm

Not worried about the intake side, but next thing is to 'open up the doors' on the exhaust outlet side of the heads:

[img]
stkexhep.JPG
stkexhcp.JPG
stkexhep2.JPG
[/img]
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XRV8 Race Parts > for AM's '56-'67 Rambler V8: http://amcramblermarlin.1colony.com/favorite_links.html

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Re: AMC 327 - 443 CID Rambler V8

Post by amcenthusiast » Sun Jun 25, 2017 9:49 pm

Fixin' to settle the issue...

-Showing homemade variable speed rig with foot pedal switch (7 amp Dayton on/off switch with spliced in 7 amp ceiling fan rheostat) -this enables two handed strength & concentration and slow enough speed not to dig holes...

[img]
settletheissue.JPG
[/img]
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XRV8 Race Parts > for AM's '56-'67 Rambler V8: http://amcramblermarlin.1colony.com/favorite_links.html

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Re: AMC 327 - 443 CID Rambler V8

Post by Keith Morganstein » Mon Jun 26, 2017 6:01 pm

So how did you determine the way you went about porting the heads? (The size and the shape of the ports?)

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Re: AMC 327 - 443 CID Rambler V8

Post by amcenthusiast » Mon Jun 26, 2017 10:20 pm

Lifelong story ya' know... We get the mechanical gene in our DNA? So many inspirational teachers and mentors to be thankful for, where to start?

Before we start porting these Rambler V8 heads, it's good to be armed with some knowledge (helps to know what you're doing)

[img]
RV8epdrawing.JPG
[/img]

So there are three general sections. I believe these are highly engineered for size and volume and all porting work should tend to keep the overall shape with uniform enlargement on all sides of the port walls except for the exposed roof area. Whereas when the 'exposed roof area of section 3 is left basically unrelieved it helps to make a more smooth transition on the roof side of the port from the trapezoidal mid section to outlet.

Description of the sections and their contributions to port flow and soundwave emission is a text I would like to write but I have no such text to present here at this time.
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XRV8 Race Parts > for AM's '56-'67 Rambler V8: http://amcramblermarlin.1colony.com/favorite_links.html

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Re: AMC 327 - 443 CID Rambler V8

Post by amcenthusiast » Tue Jun 27, 2017 12:19 am

This is the worst head AMC made for Rambler V8, the '66/7 California emission control type (one year only- '66 in AMC's, two year only- '66/7 in Jeeps).

First end port:

[img]
66ep3.jpg
66Portedep3.JPG
66Portedep3c.JPG
[/img]
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XRV8 Race Parts > for AM's '56-'67 Rambler V8: http://amcramblermarlin.1colony.com/favorite_links.html

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Re: AMC 327 - 443 CID Rambler V8

Post by amcenthusiast » Tue Jun 27, 2017 12:24 am

Worst head AMC made for Rambler V8: '66/7 emission control stye

Center siamesed port:

[img]
66cp2.jpg
66Portedcp2.JPG
66Portedcpc.JPG
[/img]
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XRV8 Race Parts > for AM's '56-'67 Rambler V8: http://amcramblermarlin.1colony.com/favorite_links.html

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Re: AMC 327 - 443 CID Rambler V8

Post by amcenthusiast » Tue Jun 27, 2017 12:26 am

Worst head AMC made for Rambler V8: '66/7 emission control type

Other end port:

[img]
66ep1.jpg
66Portedep1.JPG
66Portedep1c.JPG
[/img]
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XRV8 Race Parts > for AM's '56-'67 Rambler V8: http://amcramblermarlin.1colony.com/favorite_links.html

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Re: AMC 327 - 443 CID Rambler V8

Post by amcenthusiast » Tue Jun 27, 2017 1:05 am

-Same pair of heads, before and after.

I think the preceding pics show significant improvement was made.

Next, I'll show pics of the '64 RV8 exhaust ports that I ported for the 443 CID stroker.
XRV8 Race Parts > for AM's '56-'67 Rambler V8: http://amcramblermarlin.1colony.com/favorite_links.html

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Re: AMC 327 - 443 CID Rambler V8

Post by Keith Morganstein » Tue Jun 27, 2017 8:45 am

So you just made the ports bigger and tried to keep the original shape. I suppose absent of ability to do any port or airflow development, it's not the worst thing when attempting to fill an additional 116 cu/in.

Thx

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Re: AMC 327 - 443 CID Rambler V8

Post by jlbayes » Tue Jun 27, 2017 11:06 am

Awesome project. Feel your pain on poor cylinder heads.

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