I have only messed with 40 year old iron heads.

So, if I was building a stout 440, 9.5 - 10.1 compression

Comp XE 274 OR Comp XE 275 HL cam with TTI headers. Speed demon carb. Edelbrock performer RPM intake.

Which head is the choice head, right out of the box (checked by machinist before assembly of course).

From your experience, why or why not?
I have heard the edelbrock RPM heads are great for the mopar engines....but.... you tell me!

#1 Edelbrock Performer RPM
#2 440 source stealth heads
#3 Indy 440 SR heads

eight

I doubt you want SR heads, they have raised ports, external oiling and a different valley plate. It doesn't sound like that you would need all of those issues with what you have planned.

Edelbrock heads have angled plugs, Stealth have straight plugs so that might make a difference depending on your headers.

Edlebrock for sure, no question in my mind.

The eddy rpm or 440source heads will do you just fine for what you want. They've both been flow tested to very very similar numbers to each other. I run the 440source heads, no problems.

having owned both eddies and 440source ones....hands down without even a second though. edelbrock

indy is only helpful when your paying them to be helpful

Edelbrock made MP heads right out of the box and have straight plugs. very nice heads.

Yes, the MP "452" aluminum head is a nice choice also. Basically an Edelbrock head with straight plugs and a Mopar label on the end. I have those heads on the 512 engine in my Coronet.

Mancini Racing sells them as a complete package with CNC porting. I think that Hughes also can get you the same parts or sell you a ported Edelbrock head.

I suggest checking with TTI on fitment of the angle plug Edelbrocks. I have both in the Charger. The 2" TTI pipes DO clear the plugs, but changing them requires patience. #2 and #4 require removal/install from under the car. #6 and#8 can be done from above, but is much easier from the Right wheelwell through the hole in the fender apron the factory punched for access to the alignment cams! The Eddy heads have had a few growing pains, from what I have heard, but that was back when they were first introduced. Some were known to have twisted decks, requiring milling to get perfectly flat. I personally have had 7 valves replaced due to stem wear. Both my machinist and I thought that there could be a rocker arm geometry problem, but I cant imagine how. My block is a 440 .030 over and the block deck was only cut .006 for a cleanup. Its not as if I milled the heads .050 like they used to recommend years ago in the Mopar Muscle tech section. Either way, the heads have given great service. No gasket failures even with 10.8 to 1 squeeze.

Stealth heads here with no issues. Machinist checked them out and was impressed. Just needed different length pushrods.

I have the Stealths also.Going on the 3rd year and no problems.I did change the sprimgs, locks, and retainers as I run a .588 lift and solids with a 4 speed and hit some high revs.My pushrods cleared just barely.I was thinking of the Eddys but the angled plugs were a problem with my dome pistons.Just what ever you buy have a good machine shop check them.Rocky

Stealths here also had machinist check them and put in better locks,springs and retainers Like Kim @ 440source recommended for the cam I'm running. I did have to clearance the heads near the pushrods. Going on a year now with no problems but less than 1,000 miles on them

I have the Indy EZ's with a Performer RPM intake and Doug's headers with no issues with header fit and my hood closes with a 3" element and drop base air cleaner.
I think the EZ's would be the best choice with room to grow when you get used to that level of HP
Gus

Wow, thanks for the replies guys....

My brother just finished his 493 stroker motor and it is scarey fast compared the stock, low compression 440 we had in it before... it has cnc ported edelbrocks.....

For my future build I have had my eyes opened as I have a lot more options now.

I never even heard much about the mopar 452 heads, I'll have to look into a set of those for my 383 in my 71 roadrunner, then I wouldn't have to change out the headers!

Anyway...any more input let me know! As always...learning a lot here.


eight

Ok, for those of you who have had 440 source heads AND edelbrock heads.... why do the edelbrock heads win that contest?

Noticable performance difference
Crappy castings?
Other sorts of quality....?

eight

having had both and still owning 440 source ones i can answer that.

my source heads were the first generation. they needed locks and retainers out of the box as they were poor quality. emailed brandon and never even got a response (you will soon see a pattern here). no biggie.
bolted them on my 383 while i was building my new 383.

pulled them and took them to dodgefarmer (randy) to check out how they were holding up after 5000miles before i bolted them to my new 383. apparently they had huge amounts of porosity around the water jacket areas. Randy fixed them up (again) and was back in business.
emailed brandon again. ignored. send him another, ignored. sent him a final one saying thanks for nothing and the problem was fixed. nothing. He then emails and says he doesnt consider it a problem unless i phone and since the problem was fixed he didnt feel he needed to talk to me. my final email was to brandon sugesting some places he could "store" his parts on his person.

if i was selling a product that was poor quality i would want to know what caused the problem. he obvously knew about the problem or didnt care as they were selling well anyways. ride the train until it falls off the tracks i guess

i have probably around $1600 into these heads right now. I bought them for the sole reason to save a couple dollars. in the long run i could have bought eddies and never had any problems.

i have posted of this issue here before and electrolisis may have been a issue. IF thats the case why didnt my eddy heads do the same thing? cheap castings on the source stuff

thanks brandon i hope my post brings in some business for you

I opted for the source heads mostly because of the stock external appearance. The fact that they offer an on par performance with Eddys for about $500 less also factored in.

Any flow numbers on the Eddys,Stealths and MP's??

What about the Stage 6's??

Im not and have never been a fan of the Source stuff. With the increasing numbers of cracked Source heads, Eddys or the MP 452 heads are the only way Id go. Plus the Eddys/452s flow a little more than the Source heads, un ported.

Basically the hardware with the Source heads is useless with any cam..............not mention my experience with a few of their other parts.