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440 source stealth heads vs. OEM: Cosmetic differences? #708189
05/26/10 09:11 AM
05/26/10 09:11 AM
Joined: Jan 2003
Posts: 9,670
Lima, Peru
domingo Offline OP
EL Master
domingo  Offline OP
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Posts: 9,670
Lima, Peru
Hi!

I am about to do the rebuild on a 1971 440-6 engine for a real V code 71 cuda.

I was maybe thinking abut using the 440 source heads on what would be an otherwise stock rebuild instead of using the OEM head castings.

I was wondering what the differences are between an OEM casting and the 440 source castings. If they are close enough and I will be able to install all accessories, stock valve covers, etc. Then I think I might be willing to use the stealth heads for a little more ooomph and weight savings.

Any info?

Re: 440 source stealth heads vs. OEM: Cosmetic differences? [Re: domingo] #708190
05/26/10 10:19 AM
05/26/10 10:19 AM
Joined: Sep 2004
Posts: 6,906
IL, Aurora
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ademon Offline
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ademon  Offline
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IL, Aurora
no heat crossover opening is the big one that i'm aware of

Re: 440 source stealth heads vs. OEM: Cosmetic differences? [Re: ademon] #708191
05/26/10 12:18 PM
05/26/10 12:18 PM
Joined: Jan 2003
Posts: 9,670
Lima, Peru
domingo Offline OP
EL Master
domingo  Offline OP
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Lima, Peru
But thats not visible once installed....or is it?

Not a downside to that IMO if its not visible.

Re: 440 source stealth heads vs. OEM: Cosmetic differences? [Re: domingo] #708192
05/26/10 01:35 PM
05/26/10 01:35 PM
Joined: Jan 2003
Posts: 1,807
North Dakota
Azzkikrcuda Offline
top fuel
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North Dakota
On stock heads the crossover area has a U shaped channel around the crossover port that is visable with the intake on. The shealths don't have this channel, other then that, when they are painted it would be hard to tell the differance between the two.

Re: 440 source stealth heads vs. OEM: Cosmetic differences? [Re: Azzkikrcuda] #708193
05/26/10 01:44 PM
05/26/10 01:44 PM
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick Offline
I Live Here
patrick  Offline
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Posts: 16,123
Grand Haven, MI
IIRC the stealths don't have freeze plugs in the ends either.


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)
Re: 440 source stealth heads vs. OEM: Cosmetic differences? [Re: patrick] #708194
05/26/10 02:25 PM
05/26/10 02:25 PM
Joined: Jun 2004
Posts: 741
Carson City, NV
440sourcedotcom Offline
super stock
440sourcedotcom  Offline
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Carson City, NV
Quote:

IIRC the stealths don't have freeze plugs in the ends either.




The ends look completely stock, including the freeze plugs. Here are a couple pictures of the ends and heat riser area:




Re: 440 source stealth heads vs. OEM: Cosmetic differences? [Re: domingo] #708195
05/26/10 02:30 PM
05/26/10 02:30 PM
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581 Offline
master
Chris2581  Offline
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Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
They'll work great.I painted mine black and the filled heat riser passage isn't noticable.


Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
Re: 440 source stealth heads vs. OEM: Cosmetic differences? [Re: Chris2581] #708196
05/26/10 03:05 PM
05/26/10 03:05 PM
Joined: May 2005
Posts: 6,446
NJ-USA
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HPMike Offline
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NJ-USA
That head looks dramatically different than a 906/346 head. It looks more like a 452. IMO it shouldn't be used on a car like a V code Cuda.

And some of you guys need to get your eyes checked if you think the lack of the exhaust heat crossover is "not noticeable".



MB

Re: 440 source stealth heads vs. OEM: Cosmetic differences? [Re: HPMike] #708197
05/26/10 03:57 PM
05/26/10 03:57 PM
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo Offline
Too Many Posts
DaytonaTurbo  Offline
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Manitoba, Canada
Quote:

That head looks dramatically different than a 906/346 head. It looks more like a 452. IMO it shouldn't be used on a car like a V code Cuda.

And some of you guys need to get your eyes checked if you think the lack of the exhaust heat crossover is "not noticeable".



MB




I think you need a bit of a reality check. An edelbrock rpm head looks dramatically different than a 906 head sure, but the stealth heads are close enough that the casual observer isn't going to notice. However the nit-pickers who are looking to find something wrong will notice. But for the record, all the stock parts and accessories will bolt right up to them. Once the motor's fully assembled and in the car it will look close enough to stock that 99% of mopar guys would not notice the difference unless it was pointed out to them.

Re: 440 source stealth heads vs. OEM: Cosmetic differences? [Re: DaytonaTurbo] #708198
05/26/10 04:33 PM
05/26/10 04:33 PM
Joined: May 2005
Posts: 6,446
NJ-USA
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HPMike Offline
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NJ-USA
Quote:

Quote:

That head looks dramatically different than a 906/346 head. It looks more like a 452. IMO it shouldn't be used on a car like a V code Cuda.

And some of you guys need to get your eyes checked if you think the lack of the exhaust heat crossover is "not noticeable".



MB




I think you need a bit of a reality check. An edelbrock rpm head looks dramatically different than a 906 head sure, but the stealth heads are close enough that the casual observer isn't going to notice. However the nit-pickers who are looking to find something wrong will notice. But for the record, all the stock parts and accessories will bolt right up to them. Once the motor's fully assembled and in the car it will look close enough to stock that 99% of mopar guys would not notice the difference unless it was pointed out to them.




Thank you for your concern, but no reality check needed here. I am not a nit picker and my vision isn't as good as it used to be, but I can spot those easily on any casual inspection-painted or not. And so can anyone that I know, so Would Joe Blow know the difference?NO. The important thing is that YOU are satisfied with them.

No way I would be putting them on any of my stuff.

MB

Re: 440 source stealth heads vs. OEM: Cosmetic differences? [Re: HPMike] #708199
05/26/10 05:45 PM
05/26/10 05:45 PM
Joined: Jan 2003
Posts: 9,670
Lima, Peru
domingo Offline OP
EL Master
domingo  Offline OP
EL Master

Joined: Jan 2003
Posts: 9,670
Lima, Peru
Quote:

Quote:

Quote:

That head looks dramatically different than a 906/346 head. It looks more like a 452. IMO it shouldn't be used on a car like a V code Cuda.

And some of you guys need to get your eyes checked if you think the lack of the exhaust heat crossover is "not noticeable".



MB




I think you need a bit of a reality check. An edelbrock rpm head looks dramatically different than a 906 head sure, but the stealth heads are close enough that the casual observer isn't going to notice. However the nit-pickers who are looking to find something wrong will notice. But for the record, all the stock parts and accessories will bolt right up to them. Once the motor's fully assembled and in the car it will look close enough to stock that 99% of mopar guys would not notice the difference unless it was pointed out to them.




Thank you for your concern, but no reality check needed here. I am not a nit picker and my vision isn't as good as it used to be, but I can spot those easily on any casual inspection-painted or not. And so can anyone that I know, so Would Joe Blow know the difference?NO. The important thing is that YOU are satisfied with them.

No way I would be putting them on any of my stuff.

MB




I know that the differences will be apparent, if compared one beside the other...

But if they are small enough I guess it wouldnt hurt to have aluminum heads on ana otherwise all stock looking engine...Id hate to dump $$ on old 906 castings when I can buy brand new heads for $900 bucks that will overpower the 906 heads, not to mention offer weight savings. Also, its not a permanent mod....so I dont feel guilty about doing it...or using new H beam rods, or an updated hydraulic cam grind...we'll see...

Re: 440 source stealth heads vs. OEM: Cosmetic differences? [Re: domingo] #708200
05/26/10 06:45 PM
05/26/10 06:45 PM
Joined: Jan 2003
Posts: 1,807
North Dakota
Azzkikrcuda Offline
top fuel
Azzkikrcuda  Offline
top fuel

Joined: Jan 2003
Posts: 1,807
North Dakota
Pic of my painted stealth heads.

6004651-ValveCover011.jpg (504 downloads)
Re: 440 source stealth heads vs. OEM: Cosmetic differen [Re: Azzkikrcuda] #708201
05/26/10 10:10 PM
05/26/10 10:10 PM
Joined: Jul 2007
Posts: 732
eastern,Ky
70RT Charger Offline
super stock
70RT Charger  Offline
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eastern,Ky
Since the stealth heads Have been brought up I would like to add I was told to stay away from the stealth heads as well as their water pumps. I am going to be putting the 440 source 512 stroker in my charger and the stealth heads but was told by the guy they were having trouble with them and was told the Elderbrock Victor was the better bang for the buck.I don't have a clue about heads period or the water pumps but he did say the 440 Source stroker kits were holding up good.What are your guys opinion?

Re: 440 source stealth heads vs. OEM: Cosmetic differen [Re: 70RT Charger] #708202
05/27/10 09:41 AM
05/27/10 09:41 AM
Joined: Jan 2003
Posts: 75,005
U.S.S.A.
JohnRR Online rolleyes
I Win
JohnRR  Online Rolleyes
I Win

Joined: Jan 2003
Posts: 75,005
U.S.S.A.
My opinion is this is NOT a resto topic ...

Re: 440 source stealth heads vs. OEM: Cosmetic differences? [Re: domingo] #708203
05/27/10 12:24 PM
05/27/10 12:24 PM
Joined: Mar 2008
Posts: 9,550
Sacramento CA
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Morty426 Offline
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Posts: 9,550
Sacramento CA
Quote:


But if they are small enough I guess it wouldnt hurt to have aluminum heads on ana otherwise all stock looking engine...Id hate to dump $$ on old 906 castings when I can buy brand new heads for $900 bucks that will overpower the 906 heads, not to mention offer weight savings. Also, its not a permanent mod....so I dont feel guilty about doing it...or using new H beam rods, or an updated hydraulic cam grind...we'll see...




Your 71 wouldn't have 906 heads - it would have the next series head (346?) and those have two noticable vertivle casting lines at the end.

However - I'm with Mike - it's your car, do what you want! Be happy with it.

Re: 440 source stealth heads vs. OEM: Cosmetic differen [Re: 70RT Charger] #708204
05/27/10 12:42 PM
05/27/10 12:42 PM
Joined: Oct 2007
Posts: 936
own private Idaho
N
ngpSatellite Offline
super stock
ngpSatellite  Offline
super stock
N

Joined: Oct 2007
Posts: 936
own private Idaho
Quote:

Since the stealth heads Have been brought up I would like to add I was told to stay away from the stealth heads as well as their water pumps. I am going to be putting the 440 source 512 stroker in my charger and the stealth heads but was told by the guy they were having trouble with them and was told the Elderbrock Victor was the better bang for the buck.I don't have a clue about heads period or the water pumps but he did say the 440 Source stroker kits were holding up good.What are your guys opinion?


I know the 440 source water pump housing caused me 2 yrs of overheating pain because the lower inlets were 1/2 the size as the stock housings(at the 90deg angle). swaped back to a stock WP housing and my eng is running GREAT

Last edited by ngpSatellite; 05/27/10 12:44 PM.
Re: 440 source stealth heads vs. OEM: Cosmetic differen [Re: 70RT Charger] #708205
05/27/10 02:36 PM
05/27/10 02:36 PM
Joined: Dec 2007
Posts: 7,759
So Cal
HealthServices Offline
Why would you even post that?
HealthServices  Offline
Why would you even post that?

Joined: Dec 2007
Posts: 7,759
So Cal
He's right, I'll give you 25 cents for each dollar you spent on the 440 source heads and stroker kit. PM me for my address.


Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
Re: 440 source stealth heads vs. OEM: Cosmetic differen [Re: HealthServices] #708206
05/28/10 08:58 PM
05/28/10 08:58 PM
Joined: Jan 2003
Posts: 6,085
NotRussia
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2fast4yourBrain Offline
Whack top Dodger
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NotRussia
I think they resemble the 906s more than the 346s or 452s.

906:



346:




452:


Re: 440 source stealth heads vs. OEM: Cosmetic differen [Re: 2fast4yourBrain] #708207
05/29/10 08:44 AM
05/29/10 08:44 AM
Joined: Mar 2007
Posts: 9,336
South-Central (Sebring), FL
Commando1 Offline
master
Commando1  Offline
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Joined: Mar 2007
Posts: 9,336
South-Central (Sebring), FL
All aftermarket heads come from China so they all look alike.

Re: 440 source stealth heads vs. OEM: Cosmetic differen [Re: Commando1] #708208
05/29/10 06:35 PM
05/29/10 06:35 PM

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Quote:

All aftermarket heads come from China so they all look alike.




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