ported 906 VS Stealth head OOTB which would U get?
#1778479
03/13/15 11:18 AM
03/13/15 11:18 AM
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Joined: Nov 2003
Posts: 1,033 Madison, Wisconsin
chrisnben
OP
super stock
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OP
super stock
Joined: Nov 2003
Posts: 1,033
Madison, Wisconsin
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drag race car only, 496 RB, solid cam .650 lift- Buddy of mine has a pair of nice fully ported 906's w/ 2.14 1.81 valves, milled to 84cc, dual springs, etc. He wants to trade them for a pair of stock aluminum Stealth heads. There is no option for porting these this year, plus having to change the springs, retainers, locks. I'm trying to convince him to stay with the 906's for this race season & then buy much better heads next year (such as the new Trickflow race version, Indy's, etc.) then sell the 906's. I think he'd be going backwards by using the Stealth heads "as-is". I don't think the weight savings outweighs the HP gains of the ported heads. Opinions ???
'70 Cuda "Badfish 2"- in the works
Home of MoPar University- We school 'em one at a time!!
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Re: ported 906 VS Stealth head OOTB which would U get?
[Re: chrisnben]
#1778480
03/13/15 11:30 AM
03/13/15 11:30 AM
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Joined: Jan 2003
Posts: 6,531 Jacksonville, FL
Chris2581
master
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master
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
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Not the same comparison that you have,but my car did pick up almost 2 tenths going from pocket ported 452's to OOTB Stealths.I'm sure it went faster because of the compression increase due to the chamber on the Stealth's being smaller.
But I agree that your friend should wait and get a set of Sidewinders,Trick Flows or Indy EZ's. Had I known any of the heads mentioned would have been coming out when I bought my Stealths(and the Stealth's are good for what I needed at the time)I would have waited.
Nautilus Racing- We use Superformance gaskets and Turbo Action converters/products.
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Re: ported 906 VS Stealth head OOTB which would U get?
[Re: chrisnben]
#1778481
03/13/15 11:31 AM
03/13/15 11:31 AM
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Joined: Jan 2003
Posts: 1,142 Central New York
slippery440
Crybaby440
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Crybaby440
Joined: Jan 2003
Posts: 1,142
Central New York
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I have stealth heads from the first batch. No problems. BUT today Iagree with you and say wait. Alot of new heads are coming out. Wait for them to shake out then buy.
If the MODS did their job I would not be hitting the notify MOD button. LOL
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Re: ported 906 VS Stealth head OOTB which would U get?
[Re: chrisnben]
#1778482
03/13/15 11:59 AM
03/13/15 11:59 AM
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Joined: Jan 2003
Posts: 13,365 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,365
Marion, South Carolina [><]
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Wait, save money, then buy bigger/better heads.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: ported 906 VS Stealth head OOTB which would U get?
[Re: an8sec70cuda]
#1778483
03/13/15 12:19 PM
03/13/15 12:19 PM
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Joined: Nov 2003
Posts: 1,033 Madison, Wisconsin
chrisnben
OP
super stock
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OP
super stock
Joined: Nov 2003
Posts: 1,033
Madison, Wisconsin
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exactly! I remember I used to run 10.80s in the 'ol BADFISH w/ ported 906's on a .030 440, full interior '72 Cuda 3500# His car is a Lexan windowed '72 Chally, basically same set-up, but gutted to 3000#. Heck, he should be knocking 10.50 with the 496!
'70 Cuda "Badfish 2"- in the works
Home of MoPar University- We school 'em one at a time!!
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Re: ported 906 VS Stealth head OOTB which would U get?
[Re: LaRoy Engines]
#1778488
03/14/15 12:36 AM
03/14/15 12:36 AM
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Joined: Aug 2003
Posts: 43,195 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,195
Bend,OR USA
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Quote:
Has anybody run these "fully ported" 906 heads on the same flowbench as the OOTB Stealth heads? Seems like an awful lot of conjecture going on here. I've seen "fully ported" 906 heads that flow 30 cfm less than a good (280 cfm) OOTB Stealth and ones that flow 60 cfm more than a good OOTB Stealth.
I've done the A,B,A testing on the big valve ported 906 heads compared to a set of OOTB Eddy RPMs, the Eddy heads went faster in my Duster The ported big valve 906 flowed 266 CFM@ .600, th Eddy RPMs flowed 287 on the same bench by the same tech. three months later, not 296 CFM as advertised The newer Stleath castings are suppose to be as good or maybe a tiny bit better now than the originals Eddy RPMs where Tell your friend to save his money for a set of new M.W.size port heads and intake
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: ported 906 VS Stealth head OOTB which would U get?
[Re: Cab_Burge]
#1778489
03/14/15 03:09 AM
03/14/15 03:09 AM
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Joined: Jul 2006
Posts: 4,319 Puyallup, WA
StealthWedge67
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master
Joined: Jul 2006
Posts: 4,319
Puyallup, WA
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I think it all depends on what his ultimate goals are. IF he wants to go all out as fast as possible, then wait and buy a real race head. If he wants to stay 10.0 or slower, and not mess with all of the NHRA safety issues that come with going faster than that. Then the Stealth heads might be exactly what works best within those parameters.
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
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