Re: 440 Source Super Stealth Heads
[Re: RROD]
#1396259
03/02/13 09:33 PM
03/02/13 09:33 PM
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Joined: Jan 2003
Posts: 5,439 So Cal
Sinitro
master
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master
Joined: Jan 2003
Posts: 5,439
So Cal
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Check the new Mopar Muscle, they ran some tests.. Out of the box, CNC ported vs. 915s. Just my $0.02...
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Re: 440 Source Super Stealth Heads
[Re: Mopar-Al]
#1396260
03/02/13 09:37 PM
03/02/13 09:37 PM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
master
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master
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Quote:
T I would take it with a grain of salt tho
http://www.bigblockdart.com/forum/showth...r-Stealth-do-it
I call BS on the flow figures. Sorry, but dont see it happening...
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: 440 Source Super Stealth Heads
[Re: EchoSixMike]
#1396267
03/03/13 12:50 PM
03/03/13 12:50 PM
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Joined: Oct 2011
Posts: 559 Idaho
LaRoy Engines
mopar
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mopar
Joined: Oct 2011
Posts: 559
Idaho
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Quote:
Heyold guy, the flow specs you listed here, that's for a regular Stealth? What level of work? Thanks. S/F....Ken M
Yes, that is for a regular Stealth. What would be your frame of reference for "level of work"? It's just enough work to get the listed flows.
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Re: 440 Source Super Stealth Heads
[Re: joshking440]
#1396268
03/03/13 03:08 PM
03/03/13 03:08 PM
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Joined: Mar 2009
Posts: 1,169 Virginia Beach, VA
Old School
super stock
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super stock
Joined: Mar 2009
Posts: 1,169
Virginia Beach, VA
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Quote:
Who cares.
They smell like fried rice
some people do.
and at least their customer service does'nt smell like crap......
Last edited by Old School; 03/03/13 08:59 PM.
68 cuda formula S 588" bb 5sp 70 CUDA CONVERT 500" 5SP (SUBLIME) 70 CUDA CONVERT 500" 5SP (PLUMCRAZY):TOO MUCH HORSEPOWER, IS ALMOST ENOUGH!
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Re: 440 Source Super Stealth Heads
[Re: LaRoy Engines]
#1396269
03/03/13 03:56 PM
03/03/13 03:56 PM
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Joined: Jan 2003
Posts: 75,005 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,005
U.S.S.A.
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Quote:
Quote:
Heyold guy, the flow specs you listed here, that's for a regular Stealth? What level of work? Thanks. S/F....Ken M
Yes, that is for a regular Stealth. What would be your frame of reference for "level of work"? It's just enough work to get the listed flows.
The last set of numbers you posted are obviously a ported set of stealths , CORRECT ?? And are they Stealth or Super Stealth ?
Still waiting to see a comparison of your work on another bench for a reference
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Re: 440 Source Super Stealth Heads
[Re: JohnRR]
#1396270
03/03/13 05:26 PM
03/03/13 05:26 PM
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Joined: Aug 2011
Posts: 2,857 Pattison Texas
CSK
master
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master
Joined: Aug 2011
Posts: 2,857
Pattison Texas
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this is from my super stealth & my bench
been a while,been pretty ill,but the weather has cooled of some & finally got my flow bench & heads to the house,so i got some #s together so far, these are the 440 super stealth & this is for a street motor,my testing cyl adapter is 4.250 bore diameter, i will machine it to 4.4 when i can get to it otb .200 140 .300 202 .400 242 .500 256 .600 267 .700 267 OK opened the seat up a little & did a little combustion chamber work, worked on short side & made max wedge size i am stopping here cause i dont need more flow,this is a street engine build,@ .700 they flow enough to make 688 hp,my cam will be .650 lift. these heads really want a bigger valve but to do that the seats would have to be changed,flowing the head with no valve they flow 360 not saying they would flow that # with a bigger valve but the would definitely pick up some. 2.14 valve .200 164 .300 217 .400 264 .500 290 .600 314 .700 335 .800 345
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
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Re: 440 Source Super Stealth Heads
[Re: Old School]
#1396271
03/03/13 06:14 PM
03/03/13 06:14 PM
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Joined: Oct 2011
Posts: 559 Idaho
LaRoy Engines
mopar
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mopar
Joined: Oct 2011
Posts: 559
Idaho
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Quote:
Quote:
Who cares.
They smell like fried rice
some people do.
and at least their customer service does'nt smell like crap......
Ditto, I've had nothing but excellent customer service from 440 Source.
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Re: 440 Source Super Stealth Heads
[Re: LaRoy Engines]
#1396272
03/03/13 06:44 PM
03/03/13 06:44 PM
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Joined: Jul 2009
Posts: 490 IL
EchoSixMike
mopar
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mopar
Joined: Jul 2009
Posts: 490
IL
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Quote:
Yes, that is for a regular Stealth. What would be your frame of reference for "level of work"? It's just enough work to get the listed flows.
Frame of reference? Whatever you're comfortable with, I guess. What do you charge for that head at that flow would be my 1st choice, so it can be factored against buying a different head. If it takes 5hrs per port, a bunch of welding and epoxy, so you're looking at $2k labor right off then it just makes more sense to go Victors or B-1's from the beginning. I mean for racing, it makes sense to do that anyways but the vast majority of mopar guys seem to want to squeeze a turnip for blood
BTW, thanks for posting, it seems that a lot of folks want to attack you, for whatever reason, and I appreciate that you keep going. S/F.....Ken M
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Re: 440 Source Super Stealth Heads
[Re: JohnRR]
#1396273
03/03/13 07:00 PM
03/03/13 07:00 PM
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Joined: Oct 2011
Posts: 559 Idaho
LaRoy Engines
mopar
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mopar
Joined: Oct 2011
Posts: 559
Idaho
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Quote:
Quote:
Quote:
Heyold guy, the flow specs you listed here, that's for a regular Stealth? What level of work? Thanks. S/F....Ken M
Yes, that is for a regular Stealth. What would be your frame of reference for "level of work"? It's just enough work to get the listed flows.
The last set of numbers you posted are obviously a ported set of stealths , CORRECT ?? And are they Stealth or Super Stealth ?
Still waiting to see a comparison of your work on another bench for a reference
Correct, the flows in the above post are a ported set of standard Stealth.
Here are 325cc CNC 440-1 and SUPER Stealth flows from our bench, (1) column is OOTB Indy CNC 325cc 440-1 (avg of 4 ports), (2) is OOTB SUPER Stealth, (3) is ported SUPER Stealth with a very lazy attempt at porting the exhaust. The exhaust port in the Super Stealth, in my opinion, is inferior to the standard Stealth.
Lift...........(1).............(2)..............(3)
.100........66/61.........72/61..........75/65 .200......141/114......147/124.......155/139 .300......212/163......208/161.......218/184 .400......267/207......250/190.......268/216 .500......309/241......276/207.......313/240 .600......347/267......280/217.......344/259 .700......360/285......280/224.......354/275
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Re: 440 Source Super Stealth Heads
[Re: LaRoy Engines]
#1396278
03/03/13 11:52 PM
03/03/13 11:52 PM
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Joined: May 2012
Posts: 1 Brier, WA
19polara64
member
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member
Joined: May 2012
Posts: 1
Brier, WA
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Heyoldguy, have you flowed edelbrock rpm's? How do they measure up?
Rene’ Rose
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Re: 440 Source Super Stealth Heads
[Re: 19polara64]
#1396279
03/04/13 11:32 AM
03/04/13 11:32 AM
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Joined: Oct 2011
Posts: 559 Idaho
LaRoy Engines
mopar
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mopar
Joined: Oct 2011
Posts: 559
Idaho
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Quote:
Heyoldguy, have you flowed edelbrock rpm's? How do they measure up?
I have the Edelbrocks as a little better flowing OOTB and with the same potential as the Stealth when ported.
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Re: 440 Source Super Stealth Heads
[Re: EchoSixMike]
#1396280
03/04/13 02:43 PM
03/04/13 02:43 PM
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Joined: Oct 2011
Posts: 559 Idaho
LaRoy Engines
mopar
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mopar
Joined: Oct 2011
Posts: 559
Idaho
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Quote:
Quote:
Yes, that is for a regular Stealth. What would be your frame of reference for "level of work"? It's just enough work to get the listed flows.
Frame of reference? Whatever you're comfortable with, I guess. What do you charge for that head at that flow would be my 1st choice, so it can be factored against buying a different head. If it takes 5hrs per port, a bunch of welding and epoxy, so you're looking at $2k labor right off then it just makes more sense to go Victors or B-1's from the beginning. I mean for racing, it makes sense to do that anyways but the vast majority of mopar guys seem to want to squeeze a turnip for blood
BTW, thanks for posting, it seems that a lot of folks want to attack you, for whatever reason, and I appreciate that you keep going. S/F.....Ken M
I'll presume you got your PM. The Stealth wasn't designed as a race head but you can convince it to perform in a very respectable fashion. If you already own a pair they can get you into the 700+ horsepower range cheaper than buying a new set of other heads and having them ported. A set of good flowing heads never ends up cheap even if they start out at $500/each complete.
The Super Stealth is a puzzle. You can get some decent flows from it easier than the Stealth but it's only real purpose seems to come down to it's external looks. It sorta looks stock, you know stealthy, secret, covert, clandestine, furtive. How much is that worth?
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Re: 440 Source Super Stealth Heads
[Re: tboomer]
#1396284
03/04/13 05:02 PM
03/04/13 05:02 PM
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Joined: Oct 2011
Posts: 559 Idaho
LaRoy Engines
mopar
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mopar
Joined: Oct 2011
Posts: 559
Idaho
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Quote:
Quote:
The Super Stealth is a puzzle. You can get some decent flows from it easier than the Stealth but it's only real purpose seems to come down to it's external looks. It sorta looks stock, you know stealthy, secret, covert, clandestine, furtive. How much is that worth?
To me??? Zero,Zilch,Nada! My question was how much does is cost to prep these heads? Is it worth it? Wouldn't it be better to use an assembled stealth and go from there?
Cost to prep them, prep them for what? Is it worth it? It depends on what the assembled Stealth head is being used for and what parts you already have on hand. I would rather start with the standard Stealth head.
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Re: 440 Source Super Stealth Heads
[Re: LaRoy Engines]
#1396285
03/04/13 05:45 PM
03/04/13 05:45 PM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
master
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master
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Quote:
[
I have the Edelbrocks as a little better flowing OOTB and with the same potential as the Stealth when ported.
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: 440 Source Super Stealth Heads
[Re: PorkyPig]
#1396288
03/05/13 11:27 AM
03/05/13 11:27 AM
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Joined: Jan 2003
Posts: 75,005 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,005
U.S.S.A.
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Quote:
heyoldguy - You need to post some good pics and detailed runner dimensions like cross-section areas and runner volumes for your ported Stealth heads that make those big #s. You seem to be the only person on the planet who can get that much out of that style of head, which makes it hard for myself (and others, I expect) to believe them.
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Re: 440 Source Super Stealth Heads
[Re: clonedshaker+6]
#1396289
03/05/13 03:15 PM
03/05/13 03:15 PM
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Joined: Jan 2013
Posts: 167 maryland
74yellowduster
member
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member
Joined: Jan 2013
Posts: 167
maryland
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Quote:
does anyone have a picture of the stealth heads next to 906's, 346's, 915's, or any of the good iron heads, im curious to see how "stealth" these heads actually are, i was tossing around the idea of getting the stealth heads that have been ported by modern cylinder head from 440source then getting better locks retainers and springs for my car over the factory iron heads, but the car still needs metal work so the engine combo is undecided besides 440 sixpack but i want as close to factory look as possible, and are these heads even worth getting for that matter
if you are only using a six pack, then the stealth or super stealth without porting is fine.
if you want race level stuff something fast get better heads, a single plane or tunnel ram and a big single or 2x double pumpers and pack in enough compression to make things happen.
but for street performance with a six pack the stealths are fine.
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