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Any OOTB stealth head users here?
#1005316
06/02/11 04:26 PM
06/02/11 04:26 PM
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Joined: Nov 2005
Posts: 808
mckinney texas
shoebox
OP
super stock
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OP
super stock
Joined: Nov 2005
Posts: 808
mckinney texas
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Curious to see what real world expriences with Iron heads then bolting on stealths... I plan on Doing some porting but Might just go stock for now In other words tell me your stealth ootb stories! 
Last edited by shoebox; 06/02/11 04:27 PM.
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Re: Any OOTB stealth head users here?
[Re: PolyDart]
#1005319
06/02/11 04:44 PM
06/02/11 04:44 PM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOrk !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
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Quote:
OOTB ports, but upgraded springs, retainers and locks. They're on a 512 with a solid roller cam, and 13.5:1 compression. Running 10.40s in a 3380lb Dart.
WHY diff springs, retainers and locks ?
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Re: Any OOTB stealth head users here?
[Re: dOrk !]
#1005320
06/02/11 05:18 PM
06/02/11 05:18 PM
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Joined: Sep 2007
Posts: 876
Arizona
PolyDart
super stock
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super stock
Joined: Sep 2007
Posts: 876
Arizona
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Quote:
WHY diff springs, retainers and locks ?
Solid roller cam with .650 lift and 600lb open pressure.
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Re: Any OOTB stealth head users here?
[Re: PolyDart]
#1005322
06/02/11 05:26 PM
06/02/11 05:26 PM
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Joined: Mar 2009
Posts: 1,058
bigfork mn
dragram440
super stock
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super stock
Joined: Mar 2009
Posts: 1,058
bigfork mn
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My brother is running them on a 10.5-1 383 with a voodoo 533 lift cam and they seem to work good. He doesnt have many miles on them but seem to make good power.
67' charger 499 RB
10.57 at 127
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Re: Any OOTB stealth head users here?
[Re: rebel]
#1005325
06/02/11 07:08 PM
06/02/11 07:08 PM
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Joined: Mar 2009
Posts: 2,463
Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,463
Sydney,Australia
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i swapped from iron,906 heads,to 440 source.
both are pocket ported and milled to 78cc.
picked up about 1 1/2 tenths.
i did fit a thinner cometic gasket to pop up the comp,10.4-10.8,due to thermal efficioncy(spelling)
with more tuning,some weight reduction and suspension work i am now around 6 tenths faster
i am still using the supplied springs retainers etc - but i am running a purple 509 cam shifting at 6000 trapping at 6300.these cams are easy on the valvetrain.
i am looking to go to a solid flat tappet next year when springs retainers and locks will be replaced
Source qualify their retainers to 510 lift
Tex
New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive
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Re: Any OOTB stealth head users here?
[Re: Thor500]
#1005327
06/02/11 08:14 PM
06/02/11 08:14 PM
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Joined: Nov 2005
Posts: 808
mckinney texas
shoebox
OP
super stock
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OP
super stock
Joined: Nov 2005
Posts: 808
mckinney texas
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Quote:
Out of the box, on the car. Picked up 4/10ths low comp. 440 with a small mech cam. 11:50's in a 3600# car.   
Very cool!!!
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Re: Any OOTB stealth head users here?
[Re: PolyDart]
#1005328
06/02/11 08:59 PM
06/02/11 08:59 PM
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Joined: Nov 2004
Posts: 2,119
sc
tjmarcus1
top fuel
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top fuel
Joined: Nov 2004
Posts: 2,119
sc
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Quote:
Quote:
WHY diff springs, retainers and locks ?
Solid roller cam with .650 lift and 600lb open pressure.
why go to the expense of a solid roller cam and run an ootb head?
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Re: Any OOTB stealth head users here?
[Re: tjmarcus1]
#1005329
06/02/11 10:36 PM
06/02/11 10:36 PM
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Joined: Aug 2006
Posts: 2,141
junction city oregon
viperblue72
top fuel
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top fuel
Joined: Aug 2006
Posts: 2,141
junction city oregon
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Quote:
Quote:
Quote:
WHY diff springs, retainers and locks ?
Solid roller cam with .650 lift and 600lb open pressure.
why go to the expense of a solid roller cam and run an ootb head?
Why take the chance on breaking in a flat tappet these days? Plus the solid roller can't be beat for performance either. Plus I'm sure he will port the heads eventually.
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Re: Any OOTB stealth head users here?
[Re: viperblue72]
#1005330
06/03/11 08:21 AM
06/03/11 08:21 AM
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Joined: Jan 2003
Posts: 21,072
Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,072
Niles , Ohio
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I changed springs,retainers,and locks on mine also.I run .588 solid with 4 speed.My machinist checked them back cut valves and cleaned them up a bit.Been 3 years street/and a few strip.No problems.Rocky
Chrysler Firepower
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Re: Any OOTB stealth head users here?
[Re: therocks]
#1005331
06/03/11 01:04 PM
06/03/11 01:04 PM
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Joined: Aug 2009
Posts: 304
Portland, Oregon
Digger73
enthusiast
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enthusiast
Joined: Aug 2009
Posts: 304
Portland, Oregon
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Has anyone ever had issues with the valve guides? A buddy of mine has these heads on a 383 with 1.6 rockers and a hyd. cam. His lift is right at .600" of lift. He used the springs that came with the heads with the upgraded retainers and locks. After 20 passes the valve guides were pounded down the valve stems.
I live with fear everyday but, sometimes she lets me race!
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Re: Any OOTB stealth head users here?
[Re: EchoSixMike]
#1005334
06/03/11 02:53 PM
06/03/11 02:53 PM
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Joined: Oct 2004
Posts: 1,752
detroit area
moderncylinder
top fuel
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top fuel
Joined: Oct 2004
Posts: 1,752
detroit area
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ive never really seen tight guides though i ream them when i port them... out of the box they ream them from the port side up towards the valve top and sometimes there is a burr turned up above the guide which will restrict oil from getting in to lubricate teh valve/guide,,, ive told brandon about it and i believe he has fixed it with recent "batches" of heads
their retainers are std 7 degree retainers as used in the industry,, no problem there,, the locks are a hardened stamped 7 degree lock,, in most applications there wouldnt be an issue with a flat hyd cam or mild solid flat cams
jeff
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Re: Any OOTB stealth head users here?
[Re: moderncylinder]
#1005335
06/03/11 03:56 PM
06/03/11 03:56 PM
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Joined: Nov 2005
Posts: 808
mckinney texas
shoebox
OP
super stock
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OP
super stock
Joined: Nov 2005
Posts: 808
mckinney texas
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Fwiw my machinist has heard/seen some of the stealth 7deg locks Sink or"start" to pull through so we are going to change them During porting. I didnt know about the reamerin the guide. Good Thing to check
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