Re: have 906 heads right now should I go to stealth heads?
[Re: 79machocharger]
#59680
05/19/08 05:00 PM
05/19/08 05:00 PM
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Anonymous
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Anonymous
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if it was my decision.. i'd spend the coin on the 906's. nuttin like factory iron. advantage ussually goes to the aluminum heads. both for weight and gettin away with a bit more c/r. but when the porting tools come out, there both gonna cost $$$. but as JohnRR said, check and fix whats needs done, or take your chances and run either head "as is".
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Re: have 906 heads right now should I go to stealth heads?
[Re: 79machocharger]
#59681
05/19/08 05:43 PM
05/19/08 05:43 PM
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Joined: Nov 2007
Posts: 21,814 Kirkland, Washington
Pacnorthcuda
Too Many Posts
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Too Many Posts
Joined: Nov 2007
Posts: 21,814
Kirkland, Washington
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The HP potential of stealth vs. 906 can and has been debated to great length. Some situations simply don't warrant extra effort or $$$ for better flow numbers (I don't know the particulars of your engine build, so that may or may not apply to you) BUT, the weight savings is REAL, and its real for all situations--less so for some 4500# + luxo barge.
Weight saving is arguably better than increased power output because less weight means faster acceleration, faster deceleration, better handling, and more mpg. More power USUALLY only equates to faster acceleration.
To me, it doesn't make sense to spend similar money on heads and ignore the weight advantage. Its there waiting for you....take it.
And after all, its not like the Stealth option is likely to make LESS power!!!
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Re: have 906 heads right now should I go to stealth heads?
[Re: badblack68]
#59683
05/19/08 09:35 PM
05/19/08 09:35 PM
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Joined: Jan 2003
Posts: 1,240 Fairfield Maine
hemi4speed
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,240
Fairfield Maine
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Quote:
all Bob at Outrageously Vintage in Searsmont. He`ll tell you the real story on 906 heads verses "stealth" heads. www.outrageouslyvintage.com
it wont cost you a dime Ryan for the advice..and Bob is as honest and as knowlegeable as the come..
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Re: have 906 heads right now should I go to stealth hea
[Re: Cyl.Porter]
#59686
05/19/08 11:28 PM
05/19/08 11:28 PM
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Joined: Nov 2005
Posts: 15,118 85086
moparpollack
Lil Herman
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Lil Herman
Joined: Nov 2005
Posts: 15,118
85086
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But will the stealth heads work on a 383? or are the valves too big?
56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d
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Re: have 906 heads right now should I go to stealth hea
[Re: moparpollack]
#59688
05/20/08 07:53 AM
05/20/08 07:53 AM
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Joined: Jan 2003
Posts: 74,942 U.S.S.A.
JohnRR
I Win
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I Win
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Quote:
But will the stealth heads work on a 383? or are the valves too big?
they will be fine on that bore size , adding a notch to unshroud the valves like the factory did on the max wedge engines in 63/64 would help ,but is probably not necessary
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Re: have 906 heads right now should I go to stealth hea
[Re: Mr.Yuck]
#59691
05/20/08 11:36 AM
05/20/08 11:36 AM
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Joined: Jan 2003
Posts: 74,942 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,942
U.S.S.A.
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Quote:
However you can pick up a set of ported iron heads for 3-500.
i'll buy all the sets you have for that .
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Re: have 906 heads right now should I go to stealth heads?
[Re: Stanton]
#59694
05/20/08 01:19 PM
05/20/08 01:19 PM
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Joined: Jan 2003
Posts: 24,562 Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
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 !!!!!
If he doesn't plan on building a 600 Hp motor why should he spend over 1k on a set of heads? Why does everybody need aluminum heads? If I was going to build an engine that required those flow numbers sure I'd buy a set. But if I building a simple 440 or 383 for fun and a few track dates I'll save the $$$ for something else.
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Re: have 906 heads right now should I go to stealth heads?
[Re: 79machocharger]
#59695
05/20/08 02:24 PM
05/20/08 02:24 PM
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Joined: Apr 2003
Posts: 3,968 North Riverside IL & Lowell IN
GTXKen
super gas
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super gas
Joined: Apr 2003
Posts: 3,968
North Riverside IL & Lowell IN
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All good points above. I say fit the parts to the budget no matter what it is. If you can swing the Stealth heads go for it, if not look for some already worked 906 heads. If you have to rework your heads to the tune of new seats, valves and a valve job then I think you are close enough to where the smart money in on the stealth heads. If you have a bigger budget then go for an indy head and so on... Don't spend more than you can afford, you don't need to. And don't spend 75% of the cost of a new part reconditioning a new one. ken
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Re: have 906 heads right now should I go to stealth heads?
[Re: Mr.Yuck]
#59696
05/20/08 02:35 PM
05/20/08 02:35 PM
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Joined: Jan 2003
Posts: 451 So. Cal. For Now But Texas Bou...
69sixpackbee
mopar
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mopar
Joined: Jan 2003
Posts: 451
So. Cal. For Now But Texas Bou...
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I'll throw in my $.02.
I took delivery of one of the first sets of stealths. Took them all apart and checked them THOROUGHLY. Not bad. I checked each valve with Dykem to confirm seat sealing. A few spins with the hand lapper showed all but one were spot on. After a few trips to the head surfacing machine I dialed in my chambers to 74'cc. I then started blending in the already ample (stock-ish form) bowls to the valve inserts as they (the inserts) protruded a bit into the bowls. I polished up the ports and knocked down the casting flash in them as well as an intake gasket match. I ended up removing .060" on the surfaces and .075" on the intake faces. Some of the valve cover rail was milled off in doing so but still have plenty of meat to seal the valve cover. After hand lapping the questionable valve, putting in my Isky 935-DR springs from my "906"'s and a brand new set of Comp Cams 10-degree retainers and locks, they were good to go. I figured I spent about 6hrs with the "Tootsie Rolls" which included relieving the intake pushrod areas for use with 3/8" rods and 1.6:1 rockers, another 2+ hrs for setup and about $200.00 in maching and parts costs and I am still a few bucks ahead. I don't think you can beat the cost factor. I too am not looking for a balz out killer RB just a decent runner in a stock-bodied "B" body with enough punch to turn some heads. I was running 12.70's before the head swap so soon I will send it down the track to see what improvements I made.
I went from 9.6:1 CR with the old iron heads to 10.5: 1 with the "Stealth's". I have a .048" quench (attainable using Cometic's and a stock deck ht.) and "Sixpack" 2355F TRW flattops. I have the .509/.292 cam "straight up", 3000 stall converter and 4.10"s in the Dana.
Hopefully I will drop the mill into the car this weekend.
Lots have been said about the Stealths but I still feel I got a good deal. No head swap is without a fair amount of work and exterraneous cash outlay. That is a given.
Good luck!
Bud
Last edited by 69sixpackbee; 05/20/08 02:37 PM.
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