|Re: 440 source stealth heads: GOOD?? BAD?? [Re: domingo] #712590|
05/31/1005:44 PM05/31/1005:44 PM
| Joined: May 2010|
Joined: May 2010
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: dOc 3.0 !] #712596|
05/31/1006:42 PM05/31/1006:42 PM
| Joined: May 2010|
Joined: May 2010
[email protected] 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|
05/31/1007:18 PM05/31/1007:18 PM
| Joined: Nov 2004|
Joined: Nov 2004
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|
05/31/1007:32 PM05/31/1007:32 PM
| Joined: Feb 2007|
Joined: Feb 2007
use the search function for anything 440source related. people are tired of arguing over the overall quality that comes from there
|Re: 440 source stealth heads: GOOD?? BAD?? [Re: Thor500] #712601|
05/31/1008:36 PM05/31/1008:36 PM
| Joined: Nov 2003|
Joined: Nov 2003
[Email][email protected][/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] #712603|
05/31/1009:02 PM05/31/1009:02 PM
| Joined: Aug 2009|
Joined: Aug 2009
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?
|Re: 440 source stealth heads: GOOD?? BAD?? [Re: Thor500] #712604|
05/31/1009:09 PM05/31/1009:09 PM
| Joined: Jan 2003|
Joined: Jan 2003
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
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
|Re: 440 source stealth heads: GOOD?? BAD?? [Re: domingo] #712608|
06/01/1003:46 AM06/01/1003:46 AM
| Joined: May 2008|
Joined: May 2008
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.
#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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