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440 source stealth heads: GOOD?? BAD?? #712589
05/31/10 05:31 PM
05/31/10 05:31 PM
Joined: Jan 2003
Posts: 9,670
Lima, Peru
domingo Offline OP
EL Master
domingo  Offline OP
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Joined: Jan 2003
Posts: 9,670
Lima, Peru
Has anybody used these heads?

Any comments?

Are they good, bad?

Any issues?

How do they compare to the Edelbrocks?

Id' buy eddies but the thing is they dont look anywhere close to OEM. The stealths look very stockish once painted...

Re: 440 source stealth heads: GOOD?? BAD?? [Re: domingo] #712590
05/31/10 05:44 PM
05/31/10 05:44 PM
Joined: May 2010
Posts: 207
warren, mich.
D
dwayne welder Offline
enthusiast
dwayne welder  Offline
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Posts: 207
warren, mich.
depends on how much power you want to make. they look like 906 castings, only in aluminum. i haven"t flowed one yet, so not nowing how good they are.

Re: 440 source stealth heads: GOOD?? BAD?? [Re: domingo] #712591
05/31/10 06:06 PM
05/31/10 06:06 PM
Joined: Dec 2004
Posts: 625
Florida-West Coast
Thor500 Offline
mopar
Thor500  Offline
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Posts: 625
Florida-West Coast
Bolted a set on out of the box, work great! Whats not to like?

Re: 440 source stealth heads: GOOD?? BAD?? [Re: Thor500] #712592
05/31/10 06:11 PM
05/31/10 06:11 PM
Joined: Nov 2003
Posts: 6,293
Rock Springs
Bob_Coomer Offline
master
Bob_Coomer  Offline
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Posts: 6,293
Rock Springs
IMO they are a great replacement head, and mkae good power too. On the same note, I dont think they are a race head, and not a option in a race type appication....
Of coarse these are just my opinions.


[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
Re: 440 source stealth heads: GOOD?? BAD?? [Re: Bob_Coomer] #712593
05/31/10 06:31 PM
05/31/10 06:31 PM
Joined: Dec 2004
Posts: 625
Florida-West Coast
Thor500 Offline
mopar
Thor500  Offline
mopar

Joined: Dec 2004
Posts: 625
Florida-West Coast
I have another set coming cnc'd for my 500" stroker, 12:1 590 cam, I'm expecting easy 10.50's

Re: 440 source stealth heads: GOOD?? BAD?? [Re: Thor500] #712594
05/31/10 06:32 PM
05/31/10 06:32 PM
Joined: Jul 2004
Posts: 4,732
Watertown, WI
MikeyT Offline
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MikeyT  Offline
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Watertown, WI
I really like mine, they work well and really flow well. I think I flowed 274 at .6 inch of lift out of the box, good numbers really helps my 440 breath.

Mike


1969 Dodge Dart Swinger
Re: 440 source stealth heads: GOOD?? BAD?? [Re: Thor500] #712595
05/31/10 06:34 PM
05/31/10 06:34 PM
Joined: Jul 2008
Posts: 30,247
Florida STAYcation
dIc dOc Deity ! Offline
The village idiot's idiot
dIc dOc Deity !  Offline
The village idiot's idiot

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Posts: 30,247
Florida STAYcation
Right OOTB ? .... some people have suggested that you check everything.

Re: 440 source stealth heads: GOOD?? BAD?? [Re: dIc dOc Deity !] #712596
05/31/10 06:42 PM
05/31/10 06:42 PM
Joined: May 2010
Posts: 207
warren, mich.
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dwayne welder Offline
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warren, mich.
274@.6 sounds like a good bowl ported, and gasket match set of 906. I woulden wast my money on cnc, porting on these heads period!

Re: 440 source stealth heads: GOOD?? BAD?? [Re: dwayne welder] #712597
05/31/10 07:18 PM
05/31/10 07:18 PM
Joined: Nov 2004
Posts: 843
Suffolk,VA
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ireland383 Offline
super stock
ireland383  Offline
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Joined: Nov 2004
Posts: 843
Suffolk,VA
Had my machinist check them over and he was impressed. Bolted them on and . I probably could use a little more cam with them.

Re: 440 source stealth heads: GOOD?? BAD?? [Re: ireland383] #712598
05/31/10 07:32 PM
05/31/10 07:32 PM
Joined: Feb 2007
Posts: 6,295
U.S.
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moparniac Offline
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U.S.
use the search function for anything 440source related. people are tired of arguing over the overall quality that comes from there


Mopar Performance
Re: 440 source stealth heads: GOOD?? BAD?? [Re: dwayne welder] #712599
05/31/10 07:37 PM
05/31/10 07:37 PM
Joined: Dec 2004
Posts: 625
Florida-West Coast
Thor500 Offline
mopar
Thor500  Offline
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Joined: Dec 2004
Posts: 625
Florida-West Coast
Quote:

[Email]274@.6[/Email] sounds like a good bowl ported, and gasket match set of 906. I woulden wast my money on cnc, porting on these heads period!



Modern cylinder head cnc's them, I think they know what there doing!

Re: 440 source stealth heads: GOOD?? BAD?? [Re: domingo] #712600
05/31/10 08:05 PM
05/31/10 08:05 PM
Joined: Jan 2005
Posts: 1,768
Keymar, MD
DusterKid Online content
top fuel
DusterKid  Online Content
top fuel

Joined: Jan 2005
Posts: 1,768
Keymar, MD
used a set for a yr now and work great.

Re: 440 source stealth heads: GOOD?? BAD?? [Re: Thor500] #712601
05/31/10 08:36 PM
05/31/10 08:36 PM
Joined: Nov 2003
Posts: 6,293
Rock Springs
Bob_Coomer Offline
master
Bob_Coomer  Offline
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Posts: 6,293
Rock Springs
Quote:

Quote:

[Email]274@.6[/Email] sounds like a good bowl ported, and gasket match set of 906. I woulden wast my money on cnc, porting on these heads period!



Modern cylinder head cnc's them, I think they know what there doing!



I know how they work, I purchased a set of Eddy's not long after they came out. The actually did check out OK for Use OOTB. Big heavy 69 Coronet totally stock suspension and gearing, bench seat went mid 7's in the 8th mile, so I know how they can work, seeing how they are direct copy's.
Im just saying they have cracking problems, I can only imagine cnc port work would make them much worse.
This isnt hear say, My best friend has a set on his mud truck, they are one season old...Both heads leak water like a sprinkler.
Im not saying he done everything correct with this engine, but I dont see Indy heads, or Edelbrock heads cracking under race conditions.
Thats all I am saying.....
great for a little street car, or daily driver, they wont go on anything that makes more than 500hp in my book.
They would get looked over, just like any other head for that matter.
Fact is the castings are not that great.
The material is soft. Valves, retainers and springs are junk, and wouldnt run these OOTB on one of my engines if they were offered for FREE..just to do this.
Im not trying to make this a 440 Source Bash fest.
Im just saying they are ment for a replacement head..They work well, and do work well even ported. But the casting problems and parts, and machine work can and do cause major problems....
Just the facts.


[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
Re: 440 source stealth heads: GOOD?? BAD?? [Re: Bob_Coomer] #712602
05/31/10 08:58 PM
05/31/10 08:58 PM
Joined: Dec 2004
Posts: 625
Florida-West Coast
Thor500 Offline
mopar
Thor500  Offline
mopar

Joined: Dec 2004
Posts: 625
Florida-West Coast
Thats the first instance I've heard of cracking. I'd like to think thats an isolated incident. My ootb set were from the first batch they sold.

Re: 440 source stealth heads: GOOD?? BAD?? [Re: Bob_Coomer] #712603
05/31/10 09:02 PM
05/31/10 09:02 PM
Joined: Aug 2009
Posts: 2,036
Mooresburg, Tn
'
'72CudaRacer Offline
top fuel
'72CudaRacer  Offline
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Posts: 2,036
Mooresburg, Tn
I put a set on my 440 this year. So far so good. 3200 lb E body, 11.5" MT tires, SS leaf springs, 13.5+ comp, .590 MP cam. 60' 1.39, 6.59 1/8, 103+ MPH (in East Tenn hills, 1300 ft above sea level). Didn't get to put it on dyno, but works out to approx 585 HP?

Brian Dunnigan

6013502-IMG_0830.JPG (823 downloads)
Re: 440 source stealth heads: GOOD?? BAD?? [Re: Thor500] #712604
05/31/10 09:09 PM
05/31/10 09:09 PM
Joined: Jan 2003
Posts: 6,266
Renton Washington
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Triple Threat Offline
master
Triple Threat  Offline
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Renton Washington
Quote:

Thats the first instance I've heard of cracking. I'd like to think thats an isolated incident. My ootb set were from the first batch they sold.




I know of 3 or 4 people who have/had stealths. 2 of those people were making roughly 575-600 hp and both had issues with cracking. Heads were returned on both instances. Both now have Eddy's


-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
Re: 440 source stealth heads: GOOD?? BAD?? [Re: Triple Threat] #712605
05/31/10 09:36 PM
05/31/10 09:36 PM
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo Offline
Too Many Posts
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Posts: 21,318
Manitoba, Canada
Quote:

Quote:

Thats the first instance I've heard of cracking. I'd like to think thats an isolated incident. My ootb set were from the first batch they sold.




I know of 3 or 4 people who have/had stealths. 2 of those people were making roughly 575-600 hp and both had issues with cracking. Heads were returned on both instances. Both now have Eddy's




Well I'll have to cross my fingers then. I've also got a set of first production run stealths. No problems yet but little miles on them so far. Will be in that hp range in the future so time will tell.

Re: 440 source stealth heads: GOOD?? BAD?? [Re: DaytonaTurbo] #712606
05/31/10 09:51 PM
05/31/10 09:51 PM
Joined: Nov 2003
Posts: 7,348
Mt.Vernon ,Ohio
VernMotor Offline
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VernMotor  Offline
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Posts: 7,348
Mt.Vernon ,Ohio
There been at lease 5 sets posted on this web site alone that been cracked..I have seen 2 sets myself that been cracked... like it been said..if they do not crack..they would make a nice replacement head..They dam sure ain't no race head.

Re: 440 source stealth heads: GOOD?? BAD?? [Re: VernMotor] #712607
06/01/10 12:12 AM
06/01/10 12:12 AM
Joined: Jun 2004
Posts: 741
Carson City, NV
440sourcedotcom Offline
super stock
440sourcedotcom  Offline
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Posts: 741
Carson City, NV
Quote:

There been at lease 5 sets posted on this web site alone that been cracked..I have seen 2 sets myself that been cracked... like it been said..if they do not crack..they would make a nice replacement head..They dam sure ain't no race head.




We did have one isolated production run last year that had a problem with the aluminum that made the heads more prone to cracking. The problem was solved shortly after it was discovered, and we have sold over two thousand heads since that particular production batch, and not a single one has had a cracking problem.

Every single customer that has called us with a cracked head has had it replaced under warranty at no charge, and we will continue to do this as long as possible.

Again, any cracks were an isolated incident from one production run. Please understand that any manufacturer, no matter how well known of a "name brand" or no matter expensive or inexpensive their products are, they will occasionally have issues which need to be corrected. This is the reason why reputable manufacturers offer a warranty against defects in manufacturing for a specified period of time after purchase.

Re: 440 source stealth heads: GOOD?? BAD?? [Re: domingo] #712608
06/01/10 03:46 AM
06/01/10 03:46 AM
Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar Offline
master
451Mopar  Offline
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
I have a set for a future build and castings look really good. The springs/retainers should be good for a hydraulic cam with around 0.500"+ lift?
The pros of these heads:
#1 - They look like a stock head (no other aluminum head does.)
#2 - They fit like a stock head (straight plugs allow using manifolds or headers designed for stock heads. The angled plugs of the Edelbrocks can cause problems with headers not designed for the angled plugs.)
#3 - Cost and performance.

The cons:
#1 - I guess they are not made in the USA?
#2 - The large diameter chamber needs a larger bore size head gasket?
#3 - Possable quality issue on some early heads? (just to be fair, my Stealth heads castings looked better than my Edelbrock Victors, and I did crack the Edelbrock heads, so any company can have problems?)

I also know of at least three people who have been running the Stealth heads for a year or more with no problems

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