4 valve Cleveland heads not 4 barrel

monsterstang70

New Member

Jun 24, 2004

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Amityville, NY

Jun 24, 2004

#1

• Jun 24, 2004

• #1

This are about the most exotic heads that I seen. If I had the cash I would buy these heads. http://www.araoengineering.com/Ford/clevelnd.htm

 

Route666

Active Member

Aug 16, 2003

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Brisbane, Australia

Jun 24, 2004

#2

• Jun 24, 2004

• #2

oh my!

 

Hack

15 Year Member

Mar 23, 2004

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Minneapolis

Jun 24, 2004

#3

• Jun 24, 2004

• #3

MMMMMMMM.

my toes are curling. Wow, wouldn't that be fun!!

 

Max Power

Active Member

Jul 31, 2003

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St Paul

Jun 24, 2004

#4

• Jun 24, 2004

• #4

Doesn't look like those things will work under 5000 rpm...LOL!

It's not like clevelands had flow problems in the first place.....

 

pabear89

Active Member

Apr 15, 2003

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High in the Hills of So Ca with the Voices in My H

Jun 24, 2004

#5

• Jun 24, 2004

• #5

For the 5+ grand I think I'll do some work
on my Large hole heads.
If I was to drop that much in it it would be for a 6speed tranny.


PB

 

M

my66coupe

Founding Member

Apr 30, 2002

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Arizona fountain hills

Jun 25, 2004

#6

• Jun 25, 2004

• #6

I am having difficult understanding how the added 2 valve per cylinder would open under the power of 1 cam? Care to explain?

Mike

 

monsterstang70

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Jun 24, 2004

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Amityville, NY

Jun 25, 2004

#7

• Jun 25, 2004

• #7

lol your guess is as good as mine, they didnt go in depth on how those head actually work wit the reg 351c block.

 

Mach1steve

New Member

Feb 10, 2004

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Burlington, Ont.

Jun 25, 2004

#8

• Jun 25, 2004

• #8

Lottery Win

All I need is a Lottery win, and I'd be all over those puppies like a flies on &*#~.
:0
Mach1steve

www.muggziperformance.com

 

D

D.Hearne

New Member

Sep 29, 2000

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south louisiana

Jun 25, 2004

#9

• Jun 25, 2004

• #9

my66coupe said:

I am having difficult understanding how the added 2 valve per cylinder would open under the power of 1 cam? Care to explain?

Mike

Click to expand...

With forked rocker arms. Not a hard thing to do. The valve springs are also have less spring pressure each.

 

M

my66coupe

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Apr 30, 2002

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Arizona fountain hills

Jun 25, 2004

#10

• Jun 25, 2004

• #10

Interesting, thanks for clearing that up. I wonder why 4 valve heads arent popular with pushrod engines...

Mike

 

D

D.Hearne

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Sep 29, 2000

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south louisiana

Jun 25, 2004

#11

• Jun 25, 2004

• #11

Cost is the main reason.

 

M

my66coupe

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Apr 30, 2002

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Arizona fountain hills

Jun 25, 2004

#12

• Jun 25, 2004

• #12

Ya, the aftermarket ones. But why didnt Ford/Chevy etc develope a 4 valve cast head for pushrod engines and use them widely?

Mike

 

D

D.Hearne

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Sep 29, 2000

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south louisiana

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#13

• Jun 25, 2004

• #13

Again, the reason there being cost.

 

M

my66coupe

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Apr 30, 2002

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Arizona fountain hills

Jun 25, 2004

#14

• Jun 25, 2004

• #14

D.Hearne said:

With forked rocker arms. Not a hard thing to do. The valve springs are also have less spring pressure each.

Click to expand...

Ok, I can see how a 4 valve head wouldnt be practical back then, but If the design was that simple, how bad would it hurt them financialy? Looking at a wide range of import 4 cylinders, many have a 4 valve head. My friends 2001 daewoo lanos, that he got for 3 grand, has a 4 valve head...lol

Mike

 

D

D.Hearne

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Sep 29, 2000

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south louisiana

Jun 25, 2004

#15

• Jun 25, 2004

• #15

When you're talking about cost per unit, and the unit's being numbered in hundreds of thousands, you can see why they didn't. Wasn't til the last 10-15 years that Ford came out with limited production DOHC heads and this was probably caused by competition from other manufacturers.

 

M

my66coupe

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Apr 30, 2002

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Arizona fountain hills

Jun 25, 2004

#16

• Jun 25, 2004

• #16

I see, back in the 60s was a 4 valve head unheard of? This is the first 4 valve head ive seen for a pushrod engine...

Mike

 

Max Power

Active Member

Jul 31, 2003

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St Paul

Jun 25, 2004

#17

• Jun 25, 2004

• #17

4 valve heads main benefits are more balanced flow, and lighter valvetrain components for higher redlines. Neither benefit outweighed the cost in the old days, and arguably, isn't necessary now. Works for motorcycles and race cars, but for commuter transportation, not so much.

 

W

wildstang

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Apr 8, 1999

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Orange, Vermont

Jun 25, 2004

#18

• Jun 25, 2004

• #18

It also looks like it adds quite a bit of width the the top of the block, not good for our old shock tower stangs. In their website I did not see any good front pictures or any width dimensions.

 

6

67CoupeDriva

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Mar 15, 2004

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South Carolina

Jun 25, 2004

#19

• Jun 25, 2004

• #19

I'm just curious as to why someone would develop them for the Cleveland, which as has been pointed out flowed well anyway, instead of the Windsor. Seems like the W heads would have a much larger market these days, especially if they remained compatible with the 302. Man the short stroke engines would be absolute screamers with those heads, if you built the bottom end to handle 10,000 RPM.

 

CochinoFilipino

Founding Member

Jan 14, 2002

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CA

Jun 25, 2004

#20

• Jun 25, 2004

• #20

They make Windsor heads too http://www.araoengineering.com/Ford/frdsmb.htm