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440 Source "Stealth" heads. Anybody got 'em? #226058
02/15/09 06:15 PM 02/15/09 06:15 PM
Joined: Nov 2004
Posts: 6,653
Near Reading PA USA
pinkduster Offline OP
master
pinkduster  Offline OP
master

Joined: Nov 2004
Posts: 6,653
Near Reading PA USA
My 440 is out for freshening (Blew a head gasket) and the engine compartment is finally getting freshened up too. So I just got off the phone with my engine guy. (Sorry, I'll remove, install and do other smaller engine type repairs, but I'm not going over an entire engine myself. ) He says he isn't really happy with my current 906 heads and is throwing out the suggection of the new 440 Source Stealth aluminum cylinder heads. I have actually considered these before he made the suggestion. I like the fact that they look like a stock head and my fata$$ Road Runner could stand to lose a couple of pounds. That being said, does anyone have any REAL WORLD experience with these heads??? He says, since I should have a valve job done and if I want him to go further with porting (there was nearly nothing done to them) I should just spend the coin on these heads instead. Looking for some advice I guess.

Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: pinkduster] #226059
02/15/09 06:24 PM 02/15/09 06:24 PM
Joined: Feb 2007
Posts: 6,295
U.S.
M
moparniac Offline
master
moparniac  Offline
master
M

Joined: Feb 2007
Posts: 6,295
U.S.

Mopar Performance
Re: 440 Source "Stealth" heads. Anybody got 'em? *DELETED* [Re: moparniac] #226060
02/15/09 06:28 PM 02/15/09 06:28 PM
Joined: Jan 2003
Posts: 2,949
Windsor ,Ca.
K
Keith Richards Offline
master
Keith Richards  Offline
master
K

Joined: Jan 2003
Posts: 2,949
Windsor ,Ca.
People still use iron heads?
Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: Keith Richards] #226061
02/15/09 06:50 PM 02/15/09 06:50 PM
Joined: Jan 2003
Posts: 3,616
Riverside, Ca
G
G_bob Offline
master
G_bob  Offline
master
G

Joined: Jan 2003
Posts: 3,616
Riverside, Ca
We just put a motor together for my wife's fury using the 440 source heads.
Brian (ou128/IMM) did a little work to them and did valve job.
Motor is a mild 426 ci, 9.6 cr, 231/237 .525 cam (comp XE275HL).
Made 470hp and 505 tq with a 950hp carb.
Here is a video of a dyno pull on it.
426 on the dyno
Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: G_bob] #226062
02/15/09 06:59 PM 02/15/09 06:59 PM
Joined: Nov 2004
Posts: 6,653
Near Reading PA USA
pinkduster Offline OP
master
pinkduster  Offline OP
master

Joined: Nov 2004
Posts: 6,653
Near Reading PA USA
Thanks for the link wedgomatic. Looks like I've got some reading to do. I'm just at the part about the gasket fitment issues.

Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: pinkduster] #226063
02/15/09 07:08 PM 02/15/09 07:08 PM
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581 Offline
master
Chris2581  Offline
master

Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Pink,you have a PM....

Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: Chris2581] #226064
02/15/09 07:19 PM 02/15/09 07:19 PM
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
1_WILD_RT Offline
Management Trainee
1_WILD_RT  Offline
Management Trainee

Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
No personal experiance but I believe the gasket issue was only a problem with the first run & has been improved, as has the issue with springs, retainers & keepers...
Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: 1_WILD_RT] #226065
02/15/09 07:52 PM 02/15/09 07:52 PM
Joined: Jan 2003
Posts: 27,421
Balt. Md
3
383man Offline
Too Many Posts
383man  Offline
Too Many Posts
3

Joined: Jan 2003
Posts: 27,421
Balt. Md
Steve what pistons are in the 440 ?? I only ask because you may not be able to use the 84 cc closed chamber head with pistons that were used with the open chamber 906's. I guess the Stealth heads come in 84 and 88 cc ?? Ron
Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: 383man] #226066
02/15/09 07:56 PM 02/15/09 07:56 PM
Joined: Nov 2004
Posts: 6,653
Near Reading PA USA
pinkduster Offline OP
master
pinkduster  Offline OP
master

Joined: Nov 2004
Posts: 6,653
Near Reading PA USA
Quote:

Steve what pistons are in the 440 ?? I only ask because you may not be able to use the 84 cc closed chamber head with pistons that were used with the open chamber 906's. I guess the Stealth heads come in 84 and 88 cc ?? Ron



Ron, he said he would have to cut the pistons if he uses the 440 Source heads. - Steve
Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: pinkduster] #226067
02/15/09 08:39 PM 02/15/09 08:39 PM
Joined: Jan 2003
Posts: 1,142
Central New York
slippery440 Offline
Crybaby440
slippery440  Offline
Crybaby440

Joined: Jan 2003
Posts: 1,142
Central New York
I have beat the snott out of a pair last season with roller springs and I cut .075 off the deck to get the commpression up to where the old 915s were.Not a problem all season and gained .2 to .3 in the 1/8 th mile over the old 915s.Nothing done to the motor. Alot of these guys do not own a pair of these heads but seem to show up on everyone of these post. Buy them the let your engine builder decide if you need to machine the pistons.

If the MODS did their job I would not be hitting the notify MOD button. LOL
Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: slippery440] #226068
02/15/09 09:14 PM 02/15/09 09:14 PM
Joined: Jan 2003
Posts: 3,616
Riverside, Ca
G
G_bob Offline
master
G_bob  Offline
master
G

Joined: Jan 2003
Posts: 3,616
Riverside, Ca
The set we put on the 426 is from the very first run of those heads. We used the ROL gaskets that 440 source sells.
Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: G_bob] #226069
02/15/09 09:49 PM 02/15/09 09:49 PM
Joined: Nov 2004
Posts: 6,653
Near Reading PA USA
pinkduster Offline OP
master
pinkduster  Offline OP
master

Joined: Nov 2004
Posts: 6,653
Near Reading PA USA
Quote:

Alot of these guys do not own a pair of these heads but seem to show up on everyone of these post.



I hear ya'! Certainly seems like some people have an axe to grind with 440 Source. I tell ya'... It was down right painfull to read some of that old thread even with most of the bad stuff deleted.

Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: pinkduster] #226070
02/15/09 10:05 PM 02/15/09 10:05 PM
Joined: Jan 2003
Posts: 5,488
SoCal
Brian Hafliger Offline
master
Brian Hafliger  Offline
master

Joined: Jan 2003
Posts: 5,488
SoCal
Quote:

My 440 is out for freshening (Blew a head gasket) and the engine compartment is finally getting freshened up too. So I just got off the phone with my engine guy. (Sorry, I'll remove, install and do other smaller engine type repairs, but I'm not going over an entire engine myself. ) He says he isn't really happy with my current 906 heads and is throwing out the suggection of the new 440 Source Stealth aluminum cylinder heads. I have actually considered these before he made the suggestion. I like the fact that they look like a stock head and my fata$$ Road Runner could stand to lose a couple of pounds. That being said, does anyone have any REAL WORLD experience with these heads??? He says, since I should have a valve job done and if I want him to go further with porting (there was nearly nothing done to them) I should just spend the coin on these heads instead. Looking for some advice I guess.



Pics of Gbob's source heads with some "work"!
Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: Brian Hafliger] #226071
02/15/09 10:06 PM 02/15/09 10:06 PM
Joined: Jan 2003
Posts: 5,488
SoCal
Brian Hafliger Offline
master
Brian Hafliger  Offline
master

Joined: Jan 2003
Posts: 5,488
SoCal

Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: Brian Hafliger] #226072
02/15/09 10:07 PM 02/15/09 10:07 PM
Joined: Jan 2003
Posts: 5,488
SoCal
Brian Hafliger Offline
master
Brian Hafliger  Offline
master

Joined: Jan 2003
Posts: 5,488
SoCal

Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: Brian Hafliger] #226073
02/15/09 10:08 PM 02/15/09 10:08 PM
Joined: Jan 2003
Posts: 5,488
SoCal
Brian Hafliger Offline
master
Brian Hafliger  Offline
master

Joined: Jan 2003
Posts: 5,488
SoCal

Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: Brian Hafliger] #226074
02/15/09 11:14 PM 02/15/09 11:14 PM
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo Offline
Too Many Posts
DaytonaTurbo  Offline
Too Many Posts

Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
If you want the extra "work" done already, you could always buy a set of their CNC heads. Those have already been ported and gone through by the guys at modern cylinder head.
Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: pinkduster] #226075
02/15/09 11:39 PM 02/15/09 11:39 PM
Joined: Jan 2005
Posts: 1,260
Las Vegas NV
moparmanjames Offline
pro stock
moparmanjames  Offline
pro stock

Joined: Jan 2005
Posts: 1,260
Las Vegas NV
LOL, I was going to buy a set of stealths, but for a little more $$, $1100 to be exact, I bought a different set of chinese heads, the pro comp Victor copies from Bob Mazzolini racing. I just ordered the rockers not too long ago too, they require offset intake rockers and I had to order straight from pro comp but they were $280.
So for less than $1500 I have heads that flow around 300cfm and with porting will probably go to 360cfm or so, just fine for my 10 second junk.

Last edited by moparmanjames; 02/15/09 11:43 PM.
Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: DaytonaTurbo] #226076
02/16/09 12:25 AM 02/16/09 12:25 AM
Joined: Jan 2003
Posts: 31,275
Oregon
A
AndyF Offline
I Win
AndyF  Offline
I Win
A

Joined: Jan 2003
Posts: 31,275
Oregon
The CNC version is very nice. Good for 650 to 700 hp on a 500 inch shortblock.
Re: 440 Source "Stealth" heads. Anybody got 'em? [Re: AndyF] #226077
02/16/09 07:01 AM 02/16/09 07:01 AM
Joined: Jan 2003
Posts: 21,132
Niles , Ohio
T
therocks Offline
oh wait.but hey.lets see.oh yeah.
therocks  Offline
oh wait.but hey.lets see.oh yeah.
T

Joined: Jan 2003
Posts: 21,132
Niles , Ohio
Mine have been on the 440 for a year.No problesm.I run 12.5 Ross domes.Quite a few street miles and a few strip blasts.I used the Fel Pro marine gaskets with mine.They are lift.the first sets that came out.I did add Comp springs retainers and locks.My cam is solid and .Rocky

Chrysler Firepower
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