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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!
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440... went 10.99 on cleaned up stealths , 10.88 with CNC stealths...
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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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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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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!
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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 $$$
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General Question: starting from scratch would it be better to purchase the super stealths as opposed to the regular stealths? (super street app). I know they do require the offset intake rockers which be addit'l $$$
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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 $$$
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
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Victors are a better head and do not require the offsett intake rocker assys. Thank you!
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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!
)
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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 $$$
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... because the valve stem diameters are different.
(C'mon, John, remember to complete your thoughts!
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The 452's have never been flowed. They have 2.14/1.81 valves, and were professionally done by a guy named "Spider" that has since passed away. My local machine shop did some work on them and commented on how goood they looked, but they're 452's. Looking at Dwayne Porter's tests tell me that the best of the best 452's don't flow what an out of the box Stealth will flow. I would still be using these heads on this motor if it were not for the worn out header bolt holes that leak pretty badly. I realized that some of the leaking is coming from a freeze plug that's rotted. Hopefully that is the only issue and I can use them on my son's '64 convertible.
As for the other brands of heads, they were not an option as i wanted the stock appearance that only the Stealth has. I'm not trying to fool anyone, but let's face it, I don't have a bar. 11.50's is all I'm allowed to run anyway. Was hoping to get it sorted and put a 10.99 slip in the glovebox and go get some ice cream...ok beer!
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... because the valve stem diameters are different.
(C'mon, John, remember to complete your thoughts!
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The 452's have never been flowed. They have 2.14/1.81 valves, and were professionally done by a guy named "Spider" that has since passed away. My local machine shop did some work on them and commented on how goood they looked, but they're 452's. Looking at Dwayne Porter's tests tell me that the best of the best 452's don't flow what an out of the box Stealth will flow. I would still be using these heads on this motor if it were not for the worn out header bolt holes that leak pretty badly. I realized that some of the leaking is coming from a freeze plug that's rotted. Hopefully that is the only issue and I can use them on my son's '64 convertible.
As for the other brands of heads, they were not an option as i wanted the stock appearance that only the Stealth has. I'm not trying to fool anyone, but let's face it, I don't have a bar. 11.50's is all I'm allowed to run anyway. Was hoping to get it sorted and put a 10.99 slip in the glovebox and go get some ice cream...ok beer!
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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 $$$
You might want to get board member "LaRoy Engines" opinion on this. I believe some time in the past, on another web forum far far away, he posted some porting results on both the regular and "Super" Stealth heads and said the "Super" version wasn't really much better.
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The 452's have never been flowed. They have 2.14/1.81 valves, and were professionally done by a guy named "Spider" that has since passed away. My local machine shop did some work on them and commented on how goood they looked, but they're 452's. Looking at Dwayne Porter's tests tell me that the best of the best 452's don't flow what an out of the box Stealth will flow. I would still be using these heads on this motor if it were not for the worn out header bolt holes that leak pretty badly. I realized that some of the leaking is coming from a freeze plug that's rotted. Hopefully that is the only issue and I can use them on my son's '64 convertible.
As for the other brands of heads, they were not an option as i wanted the stock appearance that only the Stealth has. I'm not trying to fool anyone, but let's face it, I don't have a bar. 11.50's is all I'm allowed to run anyway. Was hoping to get it sorted and put a 10.99 slip in the glovebox and go get some ice cream...ok beer!
Being a rag top and no bar you cant even run 11.50..
I think your good to 12.0.. but I'm not positive
Quote:Yes I purchased them for OE iron BB heads. If the stealth/super stealth heads' guide ID is smaller then reaming them out wouldn't be a problem as would be shimming the springs if need be. All good or will my valves not work?
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 ...
But you know my favorite is pops 63. 
Ron
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Thanks Ron. I know where you stand! '63's all the way. Hope you and Gary are well. Send him my best and a congrats on hitting the 9's. TD
Ron