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ported 906 VS Stealth head OOTB which would U get? #1778479 03/13/15 11:18 AM 03/13/15 11:18 AM
Joined: Nov 2003 Posts: 1,033 Madison, Wisconsin chrisnben OP super stock
chrisnben OP super stock Joined: Nov 2003 Posts: 1,033 Madison, Wisconsin	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!!

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
Joined: Jan 2003 Posts: 6,531 Jacksonville, FL Chris2581 master
Chris2581 master Joined: Jan 2003 Posts: 6,531 Jacksonville, FL	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.

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
Joined: Jan 2003 Posts: 1,142 Central New York slippery440 Crybaby440
slippery440 Crybaby440 Joined: Jan 2003 Posts: 1,142 Central New York	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

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
Joined: Jan 2003 Posts: 13,357 Marion, South Carolina [><] an8sec70cuda I Live Here
an8sec70cuda I Live Here Joined: Jan 2003 Posts: 13,357 Marion, South Carolina [><]	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

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
Joined: Nov 2003 Posts: 1,033 Madison, Wisconsin chrisnben OP super stock
chrisnben OP super stock Joined: Nov 2003 Posts: 1,033 Madison, Wisconsin	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! 8458622-badfish001.jpg (122 downloads) '70 Cuda "Badfish 2"- in the works Home of MoPar University- We school 'em one at a time!!

Re: ported 906 VS Stealth head OOTB which would U get? [Re: chrisnben] #1778484 03/13/15 06:13 PM 03/13/15 06:13 PM
Joined: Oct 2008 Posts: 411 Harleysville, PA USA T Tommy D mopar
Tommy D mopar T Joined: Oct 2008 Posts: 411 Harleysville, PA USA	I'm really curious to see how this pans out. I'm ready to paint and install a fresh 496 with CNC Stealths. It's a duplicate of the motor that came out with the exception of the bigger cubes and a switch from a nice set of 452's with 2.14/1.81 to the Stealths. I hope to be on the road when the salt washes away. Can't wait for spring!

Re: ported 906 VS Stealth head OOTB which would U get? [Re: Tommy D] #1778485 03/13/15 09:54 PM 03/13/15 09:54 PM
Joined: Nov 2003 Posts: 1,033 Madison, Wisconsin chrisnben OP super stock
chrisnben OP super stock Joined: Nov 2003 Posts: 1,033 Madison, Wisconsin	Quote: I'm really curious to see how this pans out. I'm ready to paint and install a fresh 496 with CNC Stealths. It's a duplicate of the motor that came out with the exception of the bigger cubes and a switch from a nice set of 452's with 2.14/1.81 to the Stealths. I hope to be on the road when the salt washes away. Can't wait for spring! Yes, but the these Stealths are NOT ported, big difference. Yours should pick up a few 10ths over the iron heads then. You might need more carb too- usually around an 850-950cfm (or larger) for a 500"er. '70 Cuda "Badfish 2"- in the works Home of MoPar University- We school 'em one at a time!!

Re: ported 906 VS Stealth head OOTB which would U get? [Re: chrisnben] #1778486 03/13/15 11:30 PM 03/13/15 11:30 PM
Joined: Oct 2011 Posts: 559 Idaho L LaRoy Engines mopar
LaRoy Engines mopar L Joined: Oct 2011 Posts: 559 Idaho	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. My dad can always beat up your dad until we get them in the same ring with the gloves on.

Re: ported 906 VS Stealth head OOTB which would U get? [Re: LaRoy Engines] #1778487 03/14/15 12:29 AM 03/14/15 12:29 AM
Joined: Feb 2005 Posts: 20,164 PA. pittsburghracer "Little"John
pittsburghracer "Little"John Joined: Feb 2005 Posts: 20,164 PA.	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. My dad can always beat up your dad until we get them in the same ring with the gloves on. 5 different sets of Stealth heads on my bench and I check calibration before every head I test and every set was 267cfm or less. Good for the money yes BUT.!!!! 1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27 Livin and lovin life one day at a time

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
Joined: Aug 2003 Posts: 43,129 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,129 Bend,OR USA	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)

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
Joined: Jul 2006 Posts: 4,319 Puyallup, WA S StealthWedge67 master
StealthWedge67 master S Joined: Jul 2006 Posts: 4,319 Puyallup, WA	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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