Re: Bolt-on replacement options for 5.9 Magnum heads?
[Re: 2boltmain]
#971259
04/11/11 04:47 PM
04/11/11 04:47 PM
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Joined: Sep 2007
Posts: 576 Escondido, CA
kick_the_reverb
mopar
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mopar
Joined: Sep 2007
Posts: 576
Escondido, CA
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Two good options are: RHS/Indy EQ "Iron Ram"
Both can be had at Hughes assembled as "factory replacement" but with better springs. If you want to go with upgraded components/more prep, then Hughes has that too, but IMM (board member OU812) has package for valve job, prep, upgraded components that's a good deal. As I'm sure other businesses here have...
Good luck, Ran
"Hey mister, something's wrong with your car, it idles roughly" - number one comment I got in Israel when daily driving a 70 Barracuda with a lopey cam.
Currently working on - 1966 Dodge A100 van 318/auto Finally - disc brakes on the front. In the plans - rear disc brakes, B&M 250 blower
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Re: Bolt-on replacement options for 5.9 Magnum heads?
[Re: AtomicDog]
#971261
04/11/11 06:50 PM
04/11/11 06:50 PM
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Joined: Feb 2005
Posts: 5,221 Branson, Mo.
joedust451
super gas
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super gas
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
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Quote:
Is an iron head my only choice? Anyone make a budget aluminum Magnum head?
You can go with Eddys, but there around 1400.00 & still need to be checked, No "budget" Alum. SB head that i know of. The base line RHS heads flow VERY well, I got mine from Hughes engines "ready to bolt on" all oiled up & checked for any issues for 875.00, The EQs at the time were on back-order, I would think they have them now, The base RHS Magnum heads flow alittle better then the EQs.
http://www.hughesengines.com/Index/produ...mp;partid=25738
Last edited by joedust451; 04/11/11 06:56 PM.
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Re: Bolt-on replacement options for 5.9 Magnum heads?
[Re: AtomicDog]
#971263
04/12/11 11:03 AM
04/12/11 11:03 AM
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Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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best bet for the money: http://www.hughesengines.com/Index/produ...mp;partid=25701new EQ heads, can resuse stock valve gear, has upgraded springs and new OEM valves... while you're at it I'd send them your roller cam and pick up one of their regrinds, probably the HER0814AL if it's in a workaday truck....
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Bolt-on replacement options for 5.9 Magnum heads?
[Re: 70Cuda383]
#971265
04/12/11 01:08 PM
04/12/11 01:08 PM
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Joined: Oct 2003
Posts: 21,345 Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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nevermind...I misread the post I quoted! I read "does anyone make an aluminum magnum head" not "does anyone ELSE make an aluminum magnum head"
to my knowledge, edelbrock is your only aluminum head source for a decent street head.
all others are iron.
**Photobucket sucks**
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Re: Bolt-on replacement options for 5.9 Magnum heads?
[Re: patrick]
#971267
04/12/11 02:33 PM
04/12/11 02:33 PM
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Joined: Feb 2005
Posts: 5,221 Branson, Mo.
joedust451
super gas
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super gas
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
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Quote:
best bet for the money:
http://www.hughesengines.com/Index/produ...mp;partid=25701
new EQ heads, can resuse stock valve gear, has upgraded springs and new OEM valves...
while you're at it I'd send them your roller cam and pick up one of their regrinds, probably the HER0814AL if it's in a workaday truck....
Though these are a better price then the RHSs, they don't flow as good on the intake as do the RHSs, the RHSs are 150.00 more.
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Re: Bolt-on replacement options for 5.9 Magnum heads?
[Re: joedust451]
#971269
04/12/11 05:23 PM
04/12/11 05:23 PM
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Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
Another thing that needs to be addressed is, If he will be running the factory pistons, Going with Aluminum heads the compression should be raised a good full point to compensate, so theres another exspence unless he mills the Aluminum heads. IMO it isn't worth it, The RHSs flow just as good or very close as the Eddys OOTB between the both.
please let this myth die...you CAN increase compression, but you don't HAVE to.
BTW the eddie chambers are ~5cc smaller than OEM (and EQ and RHS) maggies
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Bolt-on replacement options for 5.9 Magnum heads?
[Re: patrick]
#971270
04/13/11 09:20 AM
04/13/11 09:20 AM
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Joined: Jan 2006
Posts: 8,162 USA
360view
Moparts resident spammer
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Moparts resident spammer
Joined: Jan 2006
Posts: 8,162
USA
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I agree with Patrick. I got on a kick about 3 years ago and became curious about: "How much extra heat leaks away from a cylinder head made of aluminum, versus one made of cast iron" I posted a question here on Moparts titled "Efficiency of aluminum vs iron heads" which eventually grew to 30 to 40 replies and posts, with many external links, including this one: http://www.carcraft.com/techarticles/ccrp_0602_iron_versus_aluminum_cylinder_heads_test/index.htmlAfter further research including reading the heat transfer sections of several college engine textbooks, the conclusion was: "There is no efficiency or power disadvantage to aluminum heads, and there may be a 2 to 3% advantage" Why is this since 'everbody knows' aluminum has a higher thermal conductivity (K) than cast iron? The highly technical reason is: "The rate of Heat Transfer from the combustion gases to the metal walls is dependent on a series of steps, like links in a chain, and the 'weakest link' is at the 'boundary layer' where hot gas touches cooler metal. Since the boundary layer is about the same in both types of cylinder heads, the 'real world' heat transfer is also about the same. Richard Stone's book has a graph showing Japanese research on aluminum versus cast iron cylinder heads: http://www.amazon.com/Introduction-Inter...7025&sr=1-4Are there any NOS remnants of this older P5153847 MP aluminum cylinder head? http://www.moparsupercenter.com/mopar-pe...47p5153847.html
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Re: Bolt-on replacement options for 5.9 Magnum heads?
[Re: 360view]
#971271
04/13/11 10:58 AM
04/13/11 10:58 AM
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Joined: Jan 2008
Posts: 299 East Brunswick, NJ
finadk
enthusiast
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enthusiast
Joined: Jan 2008
Posts: 299
East Brunswick, NJ
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360view, Thanks for that excellent info. It seems everyone has a "rule" for aluminum heads from "you must raise compression" or they "drop compression". In the end, when I bought the Edelbrocks for my 408 stroker I came to the conslusion that compression ratio stays the same (built mine for 10:1 nice and safe on pump gas) but you can run a higher compression ratio before you start to see negative effects with the aluminum heads.
Scott
Scott
1956 Dodge Custom Royal Lancer (408 Stroker, 4 Wheel Disc Brakes, Rack & Pinion, 6 speed)
2002 Dodge Ram 1500 Quad Cab
1976 Corvette
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