First look at the Stealth heads

[Chryco Psycho]

I will have feedback on these shortly , I have taken a bunch of pix & ported them already just need time to post it all
 bottom line they are a decent head IMO , the portmatching on the intake side is near perfect out of the box , the porting in the intake side is approx the same size as I port Irons heads to , there is some extra meat arount the intake valve guide whuch can be trimmed but not enough to fully shape the way i do the iron heads , the exhaust port is small , I typically open the iron heads bigger than the stealth heads are but there is lots of room to open them up , the exhaust  has minimal floor height with zero excess around the guide to remove or shape , the is virtually no excess flashing or core shift & slight ridges just inside the ports that should be blended
 decent head for the $$ , not a lot of port clean up needed , I would like to see a raised exhaust floor , smaller volume heart shaped swirl chamber & 10 * locks & retaineers used
 I will try to get this set onto a flow bench soon to see what the flow is like 

[Chryco Psycho]

pic of unport & ported intake

[Jacksboys]

 

[hemiken]

Hey CP<

Have you seen that 440source have announced they are doing CNC ported Stealth heads now aswell.

[airfueleddie]

Nice work Chryco! I am seriously thinking about those heads. For the money I dont think there is a better deal. With 500" to feed I would like 300 CFM@.600 lift which is what my lift will be using 1.6 ratio rockers and a flat tappet cam. I have access to a SuperFlow Bench and will start on them as soon as I get the cash to buy them. Would you say offhand that they are as good as the Eds as far as casting quality?

[6packCuda]

 

[Chryco Psycho]

casting quality looks good , I didn`t CC the heads but the measurements i took they look smaller then the ported Iron heads I do
 you will need to do more rresearch on the heads but I doubt they will make big power on 500+ inch builds , I may be wrong

[airfueleddie]

casting quality looks good , I didn`t CC the heads but the measurements i took they look smaller then the ported Iron heads I do
 you will need to do more rresearch on the heads but I doubt they will make big power on 500+ inch builds , I may be wrong

Thanks Chryco, I am interested in them due to the fact I'm not building a maximum effort drag engine. I would be very happy with 600 H.P. and more importantly a nice flat torque curve. The most important thing to me is durability. I think from reading your results they would be as durable as the Edelbrocks wouldnt you?

[Chryco Psycho]

i believe so , just port them some

[hemiken]

Hi CP,

Have you done any more port work to any 440 source heads yet and any chance of some flow numbers please.

I have a set here and i tell you, i am so happy with them and would not look twice at an Edelbrock head, looked at an 88cc Edelbrock head yesterday and it was junk compared to the 440 source head.

[Chryco Psycho]

I port matched them & cleaned up / shaped around the guide but no we have not flowed them or run them yet

[hemiken]

I have to get rods and pistons before i touch the heads.  Dropping heads on to block after final clearance for pistons and then scribe where the cylinders are on the head, and go from their.........  I will post when i start

[Morris'_Mopars]

I have heard  good things about these heads.

[black71]

anymore info on these heads?

[Chryco Psycho]

not from me , the engine has not been built yet