Re: 440 Source Stealth and Stealth CNC...How fast?
[Re: Tommy D]
#1730882
01/15/15 07:37 PM
01/15/15 07:37 PM
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Joined: Nov 2010
Posts: 1,397 Carson City, Nevada
Biginchmopar
pro stock
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pro stock
Joined: Nov 2010
Posts: 1,397
Carson City, Nevada
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Once again an engine is only part of the equation. 3300lbs car with a 498CID w/auto good converter and it hooks. 10's
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Re: 440 Source Stealth and Stealth CNC...How fast?
[Re: Tommy D]
#1730884
01/15/15 08:54 PM
01/15/15 08:54 PM
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Joined: Mar 2009
Posts: 2,470 Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,470
Sydney,Australia
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440 plus over bore . details in signature . went 10.99 on cleaned up stealths , 10.88 with CNC stealths . little solid ft cam , 258@050 - 540 gross lift .10.75ish:1 , 5000 vert , 4.1 s60 , 275 radials . 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: 440 Source Stealth and Stealth CNC...How fast?
[Re: Tommy D]
#1730885
01/15/15 09:40 PM
01/15/15 09:40 PM
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Joined: Nov 2010
Posts: 1,397 Carson City, Nevada
Biginchmopar
pro stock
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pro stock
Joined: Nov 2010
Posts: 1,397
Carson City, Nevada
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Quote:
3700 pound race weight. 3800 RPM converter. 4.30 gears. M and H Racemaster street slicks. Super Stock springs...for now. 11:1 Compression. .575 lift, .262 @50. Six pack induction. Tan interior!
Tommy, Nice car! I believe your's is a little to heavy to get 10's but lower 11's no problem. Good Luck!
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Re: 440 Source Stealth and Stealth CNC...How fast?
[Re: tex013]
#1730889
01/16/15 01:06 PM
01/16/15 01:06 PM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Quote:
440... went 10.99 on cleaned up stealths , 10.88 with CNC stealths...
So, a tenth is all you saw from the CNC job? I'd have been scratching my head raw wondering why the extra CFM didn't translate into a bigger gain.
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Re: 440 Source Stealth and Stealth CNC...How fast?
[Re: BradH]
#1730891
01/16/15 02:09 PM
01/16/15 02:09 PM
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Joined: Jul 2006
Posts: 4,319 Puyallup, WA
StealthWedge67
master
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master
Joined: Jul 2006
Posts: 4,319
Puyallup, WA
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Quote:
Quote:
440... went 10.99 on cleaned up stealths , 10.88 with CNC stealths...
So, a tenth is all you saw from the CNC job? I'd have been scratching my head raw wondering why the extra CFM didn't translate into a bigger gain.
I thought the same thing when I read that. I'd hope for more out of $1000. But I think what it tells you is that the weakest link is somewhere else in the combo.
My 451 has OTB stealth heads, with the only mods being the valve-springs and retainers. My car is not a racecar; its a pump-gas, full weight street car with 3.91 gears. It has gone 11.81 @ 113, but I know there's plenty left to find. I'm sure that even just a good competition valve-job and a quick clean-up of the ports would be worth quite a bit. For what they cost, I couldn't be more happy with my investment in the Stealth heads.
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
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Re: 440 Source Stealth and Stealth CNC...How fast?
[Re: StealthWedge67]
#1730893
01/16/15 02:23 PM
01/16/15 02:23 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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General Question: starting from scratch would it be better to purchase the super stealths as opposed to the regular stealths? (super street app). I know they do require the offset intake rockers which be addit'l $$$
live every 24 hour block of time like it's your last day on earth
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Re: 440 Source Stealth and Stealth CNC...How fast?
[Re: Tommy D]
#1730894
01/16/15 04:25 PM
01/16/15 04:25 PM
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Joined: Jan 2003
Posts: 75,088 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,088
A Banana Republic near you.
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Quote:
3700 pound race weight. 3800 RPM converter. 4.30 gears. M and H Racemaster street slicks. Super Stock springs...for now. 11:1 Compression. .575 lift, .262 @50. Six pack induction. Tan interior!
You said you had 452's, what do they flow ?
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Re: 440 Source Stealth and Stealth CNC...How fast?
[Re: RapidRobert]
#1730895
01/16/15 04:31 PM
01/16/15 04:31 PM
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Joined: Jan 2003
Posts: 75,088 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,088
A Banana Republic near you.
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Quote:
General Question: starting from scratch would it be better to purchase the super stealths as opposed to the regular stealths? (super street app). I know they do require the offset intake rockers which be addit'l $$$
My understanding is the super stealths require finishing , aren't they sold bare with a not ready for primetime ports ?
If this is the case , unless something changed , add $$$$$
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Re: 440 Source Stealth and Stealth CNC...How fast?
[Re: RapidRobert]
#1730896
01/16/15 05:05 PM
01/16/15 05:05 PM
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Joined: Jun 2006
Posts: 5,166 CT
GTX MATT
master
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master
Joined: Jun 2006
Posts: 5,166
CT
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Quote:
General Question: starting from scratch would it be better to purchase the super stealths as opposed to the regular stealths? (super street app). I know they do require the offset intake rockers which be addit'l $$$
If you're going to spend the money for the offset rockers you might as well get Victors, at least thats how I see it. A pair of Victors are $1600, and whether you want to consider them bolt on or not you can bolt them on and use them.
The SuperStealths are on sale right now for 400 a head but they're normally 500 a head. Even at 400 a head by the time you put valves in them, have a valve job, buy valves, and put springs in them you're going to be at 1400, and the ports still need work. I don't see how you can have less than 2K into a set of these realistically. And the newer Victors have a nice combustion chamber.
The Victors are a killer head for the money. If you're running a street cam with mild spring pressure you can run a set of Hughes rocker arms (575), and theres really not much added expense vs a set of RPMs if you're in the marker for rockers too. TBH when I built my engine I was on a tight budget and had a set of ductile iron rockers, so I went with Stealths because I couldn't justify an extra grand - 1500 for the victors AND the rockers. Well guess what? Rockers didn't clear my springs and had to buy a set of rockers. The thing I was most POed about with the entire ordeal was had I known I had to buy a set of rockers I'd have started with Victor heads and make ALOT more power
Last edited by GTX MATT; 01/16/15 05:21 PM.
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Re: 440 Source Stealth and Stealth CNC...How fast?
[Re: GTX MATT]
#1730897
01/16/15 05:24 PM
01/16/15 05:24 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Thank you double R & yeah I saw that descrip on the unfinished ports but I ASSuME'd that they were ready to run as is but that a person could take them out much further if desired. so maybe they would not be in a good shape/form to run as is. Matt 20% is enticing & I have a new set of Manley 2.14/1.81's on the shelf & I would use stock BB retainers & mild springs (have them too). I always go way too conservative on cams which hurts me but just me I like a smooth idle & I'd do the valve job & I definately ain't a pro porter but I can do some slight/moderate clean up/port matching. I'm assuming the Victors are a better head and do not require the offsett intake rocker assys. Thank you!
live every 24 hour block of time like it's your last day on earth
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Re: 440 Source Stealth and Stealth CNC...How fast?
[Re: GTX MATT]
#1730898
01/16/15 05:25 PM
01/16/15 05:25 PM
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Joined: Jul 2006
Posts: 4,319 Puyallup, WA
StealthWedge67
master
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master
Joined: Jul 2006
Posts: 4,319
Puyallup, WA
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Quote:
Quote:
General Question: starting from scratch would it be better to purchase the super stealths as opposed to the regular stealths? (super street app). I know they do require the offset intake rockers which be addit'l $$$
If you're going to spend the money for the offset rockers you might as well get Victors, at least thats how I see it. A pair of Victors are $1600, and whether you want to consider them bolt on or not you can bolt them on and use them.
The SuperStealths are on sale right now for 400 a head but they're normally 500 a head. Even at 400 a head by the time you put valves in them, have a valve job, buy valves, and put springs in them you're going to be at 1400, and the ports still need work. I don't see how you can have less than 2K into a set of these realistically. And the newer Victors have a nice combustion chamber.
The Victors are a killer head for the money. If you're running a street cam with mild spring pressure you can run a set of Hughes rocker arms (575), and theres really not much added expense vs a set of RPMs if you're in the marker for rockers too. TBH when I built my engine I was on a tight budget and had a set of ductile iron rockers, so I went with Stealths because I couldn't justify an extra grand - 1500 for the victors AND the rockers. Well guess what? Rockers didn't clear my springs and had to buy a set of rockers. The thing I was most POed about with the entire ordeal was had I known I had to buy a set of rockers I'd have started with Victor heads and probably be making another 50-75 horsepower
As I said, I'm happy with my Stealths. But the reason I'm happy is that I got good performance for only $900! If you want more performance than they offer,and are willing to step up the budget, then I'd look at the victors or even Indy EZ's. Unless, of course, you want the factory look that the Stealth offers. If that is part of the draw, then its the only ball-game in town.
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
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Re: 440 Source Stealth and Stealth CNC...How fast?
[Re: RapidRobert]
#1730900
01/16/15 06:56 PM
01/16/15 06:56 PM
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Joined: Jan 2003
Posts: 75,088 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,088
A Banana Republic near you.
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Quote:
Thank you double R & yeah I saw that descrip on the unfinished ports but I ASSuME'd that they were ready to run as is but that a person could take them out much further if desired. so maybe they would not be in a good shape/form to run as is. Matt 20% is enticing & I have a new set of Manley 2.14/1.81's on the shelf & I would use stock BB retainers & mild springs (have them too). I always go way too conservative on cams which hurts me but just me I like a smooth idle & I'd do the valve job & I definately ain't a pro porter but I can do some slight/moderate clean up/port matching. I'm assuming the Victors are a better head and do not require the offsett intake rocker assys. Thank you!
2.14 and 1.81 for what heads ? If stock mopar heads they aren't going to work with anything else but a stock mopar head ...
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