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"stealth" or "super stealth" heads which to get?? #1133231
12/13/11 12:43 PM
12/13/11 12:43 PM
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RapidRobert Offline OP
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What'd be the deciding info to decide which way to go w them and do they require offset rockers? Only $125 diff (ea/bare). I have 3/8 2.14/1.81 new valves & emailed them to see if the guides can handle that increase but no ans. I will call them when they open up out there. Thank you for your time.


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Re: "stealth" or "super stealth" heads which to get?? [Re: RapidRobert] #1133232
12/13/11 02:23 PM
12/13/11 02:23 PM
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JohnRR Offline
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If I have read what little I have on the super stealths correctly they are not finish ported ???

But you can't buy the stealths bare , unless that has changed.

Re: "stealth" or "super stealth" heads which to get?? [Re: RapidRobert] #1133233
12/13/11 02:59 PM
12/13/11 02:59 PM
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LaRoy Engines Offline
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Yes they require .650" offset rockers. What performance do you want from your cylinder heads? Has anyone done any flow testing on the Super Stealth?

Re: "stealth" or "super stealth" heads which to get?? [Re: JohnRR] #1133234
12/13/11 04:19 PM
12/13/11 04:19 PM
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RapidRobert Offline OP
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Quote:

If I have read what little I have on the super stealths correctly they are not finish ported ??? But you can't buy the stealths bare , unless that has changed.


Double R I went right to the source & called them & they told me both are avail bare with the "supers" being rough bare as in needing valve job/guide clearance set and alot of die grinder work and the supers (only) require offset rockers and the supers are only avail bare. $374.95/$497.50 for regular stealths. $499.95 for bare "super". Each.


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Re: "stealth" or "super stealth" heads which to get?? [Re: RapidRobert] #1133235
12/13/11 05:33 PM
12/13/11 05:33 PM
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JohnRR Offline
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Quote:

Quote:

If I have read what little I have on the super stealths correctly they are not finish ported ??? But you can't buy the stealths bare , unless that has changed.


Double R I went right to the source & called them & they told me both are avail bare with the "supers" being rough bare as in needing valve job/guide clearance set and alot of die grinder work and the supers (only) require offset rockers and the supers are only avail bare. $374.95/$497.50 for regular stealths. $499.95 for bare "super". Each.




They changed back to offering the stealths bare then because they had stopped doing that .

Now a question for you, what heads are your valves for ?

Re: "stealth" or "super stealth" heads which to get?? [Re: JohnRR] #1133236
12/13/11 06:51 PM
12/13/11 06:51 PM
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dogdays Offline
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His valves have 3/8" (stone-age) stems. So to save a few dollars he's going to buy bare heads and ream the valve guides out to 0.375", at least that's what I am guessing. Can you tell I think it's a bad idea? Going to extra lengths to add mass to your valvetrain seems to be going backwards, also adding a larger protrusion in the valve bowl.

RR, if this is your plan I vote for the Stealths. They are about a finished product while EVERYTHING about the Supers is unfinished IIRC.

Well I went back to the website. It looks like they may have seats and guides installed. I'd hate to have to start installing seats and guides without a proper machine shop.

The difference between 11/32 and 3/8 is only 0.03125, certainly there's enough meat in the guides for that. They're probably standard 0.502" diameter guides pressed into a 0.500" bore. Back in the day the bore in the head was the same 0.500 for either ID guide. Don't sweat it.

One last thought: Better check if the SS heads use stock length valves!

R.

Last edited by dogdays; 12/13/11 07:02 PM.
Re: "stealth" or "super stealth" heads which to get?? [Re: dogdays] #1133237
12/13/11 07:12 PM
12/13/11 07:12 PM
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Quote:



One last thought: Better check if the SS heads use stock length valves!

R.




Do either of the heads use stock chrysler length valves ?

Re: "stealth" or "super stealth" heads which to get?? [Re: dogdays] #1133238
12/13/11 08:14 PM
12/13/11 08:14 PM
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RapidRobert Offline OP
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alright from scratch what I have is a set of NIB Manley 3/8 2.14/1.81 valves, a pair of bare 915's. a pair of bare blasted 452's a pair of cruddy 452 take offs complete. A 451 coming together and a 535 RB next (have block/4.5" crank). Top priority right now is heads. The KB pistons have the tall machinable dome & no idea where my height is going to fall but want to run pump gas & definitely want .040" quench. Double R I had just assumed that if the dia is not an issue and can ream the guides then I assumed the height would be the same/close. The "supers" have seats/guides installed & I'd have a guy ream the guides and I'd port them myself. That's the plan stan (so far). I'd think the larger supers would be the way to go unless you guys persuade me otherwise


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Re: "stealth" or "super stealth" heads which to get?? [Re: RapidRobert] #1133239
12/13/11 08:32 PM
12/13/11 08:32 PM
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ANYone have any of those stone-age regular Stealth heads they want to get rid-of ? ..

Re: "stealth" or "super stealth" heads which to get?? [Re: RapidRobert] #1133240
12/13/11 08:34 PM
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Keep in mind though, if those guides are reamed, you will have to have those seats touched up to make sure they are concentric to the guides.

Re: "stealth" or "super stealth" heads which to get?? [Re: drew72] #1133241
12/13/11 08:48 PM
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Quote:

Keep in mind though, if those guides are reamed, you will have to have those seats touched up to make sure they are concentric to the guides.


Yes it'll depend on how much I'd have to farm out & how much I can do myself. With the 535 cubes I was thinking the larger "super" ports might be the way to have a good base to work w though I dont have a clue if the regular stealths would be more than adequate


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Re: "stealth" or "super stealth" heads which to get?? [Re: RapidRobert] #1133242
12/13/11 09:11 PM
12/13/11 09:11 PM
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Maybe start with a performance goal and budget. If they don't match, adjust accordingly.

Re: "stealth" or "super stealth" heads which to get?? [Re: RapidRobert] #1133243
12/13/11 09:20 PM
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Quote:

alright from scratch what I have is a set of NIB Manley 3/8 2.14/1.81 valves, a pair of bare 915's. a pair of bare blasted 452's a pair of cruddy 452 take offs complete. A 451 coming together and a 535 RB next (have block/4.5" crank). Top priority right now is heads. The KB pistons have the tall machinable dome & no idea where my height is going to fall but want to run pump gas & definitely want .040" quench. Double R I had just assumed that if the dia is not an issue and can ream the guides then I assumed the height would be the same/close. The "supers" have seats/guides installed & I'd have a guy ream the guides and I'd port them myself. That's the plan stan (so far). I'd think the larger supers would be the way to go unless you guys persuade me otherwise


why not just use a set of 88cc edelbrocks? pistons will fit with little to no machining. sell the manely valves, and happy motoring.

Re: "stealth" or "super stealth" heads which to get?? [Re: BSB67] #1133244
12/13/11 09:26 PM
12/13/11 09:26 PM
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Quote:

Maybe start with a performance goal and budget. If they don't match, adjust accordingly.


Yes my budget never matches my goal but yes point taken But if the regular stealths cannot handle the requirements of 535 cubes then it'd be smart to start with the supers & worry about paying for em later


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Re: "stealth" or "super stealth" heads which to get?? [Re: RapidRobert] #1133245
12/13/11 09:51 PM
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Quote:

Quote:

Maybe start with a performance goal and budget. If they don't match, adjust accordingly.


Yes my budget never matches my goal but yes point taken But if the regular stealths cannot handle the requirements of 535 cubes then it'd be smart to start with the supers & worry about paying for em later




The 535 does not have any requirements. You might have a performance expectation however. A 535 can run fine on factory original 516s. Stealths can easily make 600 hp.

Re: "stealth" or "super stealth" heads which to get?? [Re: RapidRobert] #1133246
12/13/11 10:06 PM
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ask the salesman at 440 source about there warenty before you buy either of them. i bought a set of stealths and they had a flaw right out of the box. they wouldnt go good for the bad one cost me anouther 400 bucks to get a replacement. just bewhere and ask, hate to see you get stuck like me.

Re: "stealth" or "super stealth" heads which to get?? [Re: superbee471] #1133247
12/13/11 10:12 PM
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Thanks guys for all the support (& input). Sounds like I should be sensible & get the regular stealths either bare or complete (preferable) & a critical inspection of my choice.


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Re: "stealth" or "super stealth" heads which to get?? [Re: RapidRobert] #1133248
12/13/11 10:21 PM
12/13/11 10:21 PM
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Quote:

Thanks guys for all the support (& input). Sounds like I should be sensible & get the regular stealths either bare or complete (preferable) & a critical inspection of my choice.




Not me I would go with the supers. I have a ache to get some but not anywhere in my budget. Go big especially planning for the 535. Then you can cam down some and still have the air you want, instead of trying to get air in when the ports are to small.

If you home port though look at there photos on the web because there are some THIN spots in the casting.

my vote if for the supers.

Last edited by kilroy; 12/13/11 10:22 PM.

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Re: "stealth" or "super stealth" heads which to get?? [Re: kilroy] #1133249
12/13/11 10:37 PM
12/13/11 10:37 PM
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RapidRobert Offline OP
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Dammitt Kilroy I just may have to as Capitol 1 wants to send me some plastic but the quality control issues are worrysome but 471 said they have a warranty avail which might be good preventative medicine


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Re: "stealth" or "super stealth" heads which to get?? [Re: RapidRobert] #1133250
12/13/11 10:43 PM
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Quote:

Dammitt Kilroy I just may have to as Capitol 1 wants to send me some plastic but the quality control issues are worrysome but 471 said they have a warranty avail which might be good preventative medicine




The QC control on all stealth heads super or not have been called into question (for that matter all 440source stuff). There are some issues that are document and lots that are fine or go unnoticed, just make sure theyll takem back if there are issues like you said.

If they perform anywhere near the Ed victors, which is what I think they are trying to compete against, I would prefer the supers (well minus the non made in america part).

by the way when you talk to them see what size seats they have already installed.

Last edited by kilroy; 12/13/11 10:45 PM.

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