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So did the Edelbrock heads when using 1.6 rockers.
Just get out the grinder and live happily ever after. Or, upto the next snatch ofcourse.

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We had to grind my Eddy's for clearence.

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...and stealths definately are not Edelbrocks.

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...and stealths definately are not Edelbrocks.

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Not to slam anyone but just wondering what that meant.

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...and stealths definately are not Edelbrocks.

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Not to slam anyone but just wondering what that meant.

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Not nearly as nice kinda crude (well Chinese so to speak) no way an OOTB Stealth will flow what and OOTB eddie will.

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Not to start a but do you have the flow numbers to back up that claim? Because the numbers I have, done by a respected moparts head porter, show OOTB eddy vs OOTB stealth to be within +/- 4% of each other across the board.

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I agree, no part is bolt on with out checking. Especially aftermarket.

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Oh here we go again. I'll take Stealths any day over Eddies for price.

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and you get what you pay for.not saying anything bad about any head.

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No not poor quality, just common sense says to look a part over before you bolt on.

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I can understand changing the locks (and springs for high lift cams), but why change the retainers if you're not racing?


Something wrong w/them?

Seems like a waste. I think for added insurance, the heads should just come with 10* Comp locks.

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For sure! I couldn't believe when the guy at 440 Source told me I had to change them because my cam was over .510 lift. Are a lot of guys buying aluminum heads and running small cams? Should just come with them standard IMO. So far that is my only complaint. I still don't have the motor assembled so I can't tell you how well they work!

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As consumers we should at least expect that a set of heads that costs from $1000 to $2000 and are promoted as bolt ons should at minimum have a proper valve job including spring heights and stem heights etc.

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As consumers we should at least expect that a set of heads that costs from $1000 to $2000 and are promoted as bolt ons should at minimum have a proper valve job including spring heights and stem heights etc.

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Personally I think everyone takes the "bolt-on" or "ready to run" statement too literally.

Buying car parts is no different than buying a door at Home Hardware - it may need some material shaved off the edge before it closes or need the hinges moved a tad to fit.

Or how about buying a "ready to serve" TV dinner - sure its ready to serve ... AFTER you heat it up.

And then there's the fact that car guys are a picky bunch. I don't doubt that those heads are WAY better out of the box than any head that came on your original car BUT ... someone tore a set down and they weren't absolutely perfect so now everyone is expecting Super Stock quality parts when that was never the manufacturers intention to provide.

Let's face it guys, $1000 for a pair of aluminum heads is pretty damn cheap. And if you bolted them on with stock hardware (what they're made for) they'd likely work just fine and give you years of trouble-free service.

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The 510" lift max of the stock springs is probably due to the fact that the heads are a stock replacement type head- and compared to stock cams a 510 lift cam (509) is much much bigger/aggressive than stock. ???

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Not too start an argument here. But I have to say I disagree. A bolt on part should be just that. I manage a Lumberyard / hardware store. When we sell a door it is ready to install. You don't need to adjust the hinges or trim the edge! (atleast not on a prehung door) If I was selling just a door slab that a person was going to retrofit into an old door frame...then that would be a different story. But I wouldn't advertise that as a "bolt on" type part. (like the heads are) If they are selling them as a "bolt on" then they should be ready to install. I can't even imagine selling someone a new steel entry door and then they had to move the hinges and "trim the edge". Just my

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THERE you go ...... now to the guy that compares a set of these (or any) heads to heating-up a TV dinner ? ...

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Are a lot of guys really putting these heads on a totally stock motor?

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That wasn't meant directly to you, just this thread is beatin to death. We need to bring back the horse icon.

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...NOT directly ? ..

I don't think that THIS aspect is beng beat-to-death at all. At WHAT POINT do you accept an "assembly" as being good ? ...and not needing further inspection.

Cyl heads ? .. you don't. Complete transmission? .. you do ?

Why don't you give us a list of the assemblies that you will accept as-is and TRUST. And the ones that you do not. And WHY....you do or don't.

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I guess on certain parts you have to roll the dice on. Obviously every part is not going to be defective or need attention.

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When we sell a door it is ready to install. You don't need to adjust the hinges or trim the edge!

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A bolt on part should be just that.

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A bolt on part should be just that.

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And they are, but NOT with a .700 lift roller cam, 1.7:1 offset rockers and other miscellaneous non-stock items.

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Oh geese ... this is NOT what we are talking about ..... most DO have more "stock" items than that ..

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When we sell a door it is ready to install. You don't need to adjust the hinges or trim the edge!

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And when was the last time you sold one of these doors that didn't need the frame shimmed ?!?! Sure, it fit the opening BUT it required some additional work to fit and work properly.

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A bolt on part should be just that.

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And they are, but NOT with a .700 lift roller cam, 1.7:1 offset rockers and other miscellaneous non-stock items.

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Well its like buying a crank or rods.Would you just open the box and install.Yeah you might get lucky but its worth the effort to check it.Ive pulled new oil pumps aprt to check them.Just a caution.Ive installed too many NEW parts at work that were stock replacements that didnt work.With $$$ in a motor Id rather be safe than sorry.Rocky

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So be it. Either you buy it or they'll sell it to the next guy.

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I am not condemming the Stealth heads. They are a good value compared to the rest of the market. They are great for someone looking to make 400-600 hp for less than a couple grand in heads.

But they could be better if QC was better...and QC would be better industry wide if consumers insisted on it.

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I agree with you completely. I bought them because I would have had almost as much into rebuilding my 906's and they are aluminum so a guy can run more compression with pump gas. Hopefully they run good and I don't have any problems.

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Not to start a but do you have the flow numbers to back up that claim? Because the numbers I have, done by a respected moparts head porter, show OOTB eddy vs OOTB stealth to be within +/- 4% of each other across the board.

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well for starters many of the seats hung inside the ports for a sharp edge. all the seats were above the combustion chamber (or rather protruding below the combustion chamber roof) different amounts. Rough and crude behind seats into the port. Overall seats look cheap and crudely installed. Eddies come port matched source do not.
Crude bump on backside of the pushrod pinch in port.
One spring cup had hole off center thus it was held up on one side 1/4 of an inch holding the spring way crooked. Source sent out a new one after a major wine job!
the seat material ground real easy thank god to blend into the ports. seems soft to me??????
the aluminum itself seems softer than and edelbrock?????
+ you have to buy new retainers and keepers.

The overall fit and finish on an eddie head is way way better.
Just by eye balling can't see how they would flow as good as an eddy without a lot of hand work!! no flow numbers so who knows.
Valve job was fine. cc'd 81 low to 83 high
springs were 140 lb at 1.86 and 370 @ .600 lift

That said they are definatly the Walmart of aluminum heads good thing we took these apart to check them out especially on the cocked spring cup
After hand porting 2 sets of eddies then these I stand by "They Are not Edelbrocks"!!

are they better than spending time and money on iron heads Yes Way better!!! + the fuel requirement bonus.

Would "I" buy a set?? maybe but if I had a few more bucks I would try to move up in quality to Edelbrocks especially if they were going on OOTB

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Thanks for the info.

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And then there's the fact that car guys are a picky bunch. I don't doubt that those heads are WAY better out of the box than any head that came on your original car BUT ... someone tore a set down and they weren't absolutely perfect so now everyone is expecting Super Stock quality parts when that was never the manufacturers intention to provide.

Let's face it guys, $1000 for a pair of aluminum heads is pretty damn cheap. And if you bolted them on with stock hardware (what they're made for) they'd likely work just fine and give you years of trouble-free service.

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Well said Stanton!

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And it is NOT in your machinist's best interest to inspect a set of Stealths for you and say 'they're fine, there's nothing I could improve on them, send me your short block work only from now on'.

No matter how honest he is, he's got a subconscious need to convince himself (and you) that he has higher skills and quality than mass-production.

And if they were perfect OOB, guys would be bitchin about a $2200 price tag.