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I can't believe some of these responses. It amazes me that these guys are actually driving cars and not still running around in horse and buggys!

Use the 906's to anchor your dingy or something like that - or sell them to one of these die-hard iron fans. The simple fact is you'll end up spending more money than the cost of the Stealth heads to get a 906 to perform to the same level as an "out of the box" Stealth (just read the specs !!) and then you'll be left with very little room for future improvement. The Stealth, on the other hand, has all the good stuff right out of the box AND has a ton of material left for future improvement. The weight savings was already mentioned. Consider resale value as well. "Brand new" should also be worth something!

As for asking so-and-so about this and so-and-so about that, HELL, call up 440Source and get it right from the horse's mouth !!!!!

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79machocharger,

Perhaps the following will be useful in your decision. I helped my buddy change the heads (906 w/larger valves) on his 3900 lbs., 1968 440 RT recently. His motor consist of 10:1, Lunati Voodoo #60302 262-268 cam, Performer RPM intake, BG 750 Mighty Demon, headers, 727 w/3000 stall, 3:55 SG.

The 906s that were removed were in good shape and had upgraded springs. Heads were rebuilt a little more than 1 year ago. On went the Stealth heads using prior rocker assembly (roller 1.5). Stealth heads were untouched and simply bolted on. Timing is 36 total.

In March the car went 13.9. May 2, car ran 13.55. I believe the mph was up 3 or 4 mph with the new heads. Car is more responsive with the new heads. Weight dropped poundage off the front end too.

Hope this helps.

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I can't believe some of these responses. It amazes me that these guys are actually driving cars and not still running around in horse and buggys!

Use the 906's to anchor your dingy or something like that - or sell them to one of these die-hard iron fans. The simple fact is you'll end up spending more money than the cost of the Stealth heads to get a 906 to perform to the same level as an "out of the box" Stealth (just read the specs !!) and then you'll be left with very little room for future improvement. The Stealth, on the other hand, has all the good stuff right out of the box AND has a ton of material left for future improvement. The weight savings was already mentioned. Consider resale value as well. "Brand new" should also be worth something!

As for asking so-and-so about this and so-and-so about that, HELL, call up 440Source and get it right from the horse's mouth !!!!!

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I can't believe some of these responses. It amazes me that these guys are actually driving cars and not still running around in horse and buggys!

Use the 906's to anchor your dingy or something like that - or sell them to one of these die-hard iron fans. The simple fact is you'll end up spending more money than the cost of the Stealth heads to get a 906 to perform to the same level as an "out of the box" Stealth (just read the specs !!) and then you'll be left with very little room for future improvement. The Stealth, on the other hand, has all the good stuff right out of the box AND has a ton of material left for future improvement. The weight savings was already mentioned. Consider resale value as well. "Brand new" should also be worth something!

As for asking so-and-so about this and so-and-so about that, HELL, call up 440Source and get it right from the horse's mouth !!!!!

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yup.. nothin' like some good ole iron heads opening a can of whoop butt against some eddies, stealths, or whatever.
BELIEVE me my friend.. 90% of the people here get aluminum heads just to be cool.. power is secondary.

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Lots of people running Eddie RPMs on a 450 hp 440 with a broom stick for a cam, whats the point? Lots of guys turning 500 hp with irons. The aluminums are superior but it seems like alot of people that have them dont even need them, the guys whos combo itd really be good for have the Irons because they dont have the cash. I just hate when I go to a car show and see a 440 with aluminum heads and ask about the cam and if the motor is dynoed or not, and its a very mild combo. I get all excited for a 550 hp mill and am saddened. For what its worth a guy with an IRON headed 383 at my local cruise I chatted with maybe two weeks ago said his 383 with 906s and the regular street/strip specs dynoed at 460 hp and almost 500 ft lbs of torque. Hes gonna bring the cam card and dyno sheet next time he comes because he didnt remember the specs on the cam.

I tend to wonder if the irons are really better suited on a 383 than the aluminum heads in most applcations. Probably not, but I still wonder.

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Thanks for all the info guys, I decided to go with the stealth heads. I'm building a pretty healthy 440 and wanted somthing that would would work real nice with it and it sounds like these will be the better bet for me between the two .

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Thanks for all the info guys, I decided to go with the stealth heads. I'm building a pretty healthy 440 and wanted somthing that would would work real nice with it and it sounds like these will be the better bet for me between the two .

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Just a suggestion, take 10 minutes and call Bob at Outrageously Vintage BEFORE you write the check on the stealth heads. He`s a great guy and has been racing Mopars all his adult life. I`m sure you know him because Reed asked me how I got Bob to build me an engine.

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And keep in mind you're taking to a guy who's got a significant portion of his business in refurbishing iron heads. Must be ruff these days with the other choices out there!

Hey, I run ported 906's on my car, I will use them till something happens, but I will NOT put any money into them. It will be the perfect opportunity to UPGRADE to AL heads!

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Thanks for all the info guys, I decided to go with the stealth heads. I'm building a pretty healthy 440 and wanted somthing that would would work real nice with it and it sounds like these will be the better bet for me between the two .

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Just a suggestion, take 10 minutes and call Bob at Outrageously Vintage BEFORE you write the check on the stealth heads. He`s a great guy and has been racing Mopars all his adult life. I`m sure you know him because Reed asked me how I got Bob to build me an engine.

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Just called Bob today...Took 45 min out of his day to talk and explain ALOT of info to me...My money is gonna be with him. Also explained i picked the wrong cam for my build and we went into that also...Give him a call and ask the questions...