Eldebrock RPM's vs. 440 Source Stealth heads**UPDATE**
#1455047
06/18/13 09:49 PM
06/18/13 09:49 PM
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Joined: Aug 2009
Posts: 2,036 Mooresburg, Tn
'72CudaRacer
OP
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Mooresburg, Tn
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Trying to decide which way to go and would welcome some input from from other racers in my position. First, some back ground. I built this engine (440 +.030, MP .590 cam, Ross domed pistons 99501, H beam rods, Hooker super comp headers, 1050 dominator carb) with 440 Source Stealth heads. One of them cracked where the early castings were prone to crack (end exhaust port into the spark plug hole, not really cost effective to repair). Then I put my trusty cast iron 452's (some port work) on and was OK with that. Doing so I added 40 lbs back to the front of the car and lost .3 ET (from 6.50s to 6.80s) Now one of the 452's is cracked and I have to make a dession as to which way to go. I'm not looking for 700 hp or even 650 hp because the car is not tubbed and runs 11.5 X 29.5 slicks on SS leaf springs. I am also trying to keep the cost down as much as possible. I'm looking at Indy SR heads, but they may be over kill for my needs, plus a lot of others issues to deal with (such as external oil lines, differnt push rods, valley plate, angled plugs, raised exh ports, ect) All that brings me back to basicly two choices, 440 Source Stealth heads or Eldebrock RPM's. On paper they look very similar. As cast they flow as good as a preped 906 or 452. All that to ask this; OOB, which head do you feel would be the better choice for me? Thanks for your help, Brian
Last edited by '72CudaRacer; 06/23/13 09:45 AM.
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: '72CudaRacer]
#1455048
06/18/13 10:01 PM
06/18/13 10:01 PM
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Joined: Jan 2003
Posts: 6,531 Jacksonville, FL
Chris2581
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Jacksonville, FL
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Even though I have Stealth's and so far am happy with them,I would go Edelbrock.The only 2 reasons I went with Stealths was the cost and that they look like the stock Mopar heads.For a dedicated race car Edelbrock would be my choice.
Nautilus Racing- We use Superformance gaskets and Turbo Action converters/products.
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: sam64]
#1455051
06/18/13 11:16 PM
06/18/13 11:16 PM
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Joined: Jan 2003
Posts: 4,852 KENTUCKY
69CHARGERMD
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KENTUCKY
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I run the edelbrock RPM performers. Have run a best of 10.04 at Norwalk last year. No complaints. Dwayne Porter did the heads. Doug.
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: mopar65]
#1455053
06/18/13 11:47 PM
06/18/13 11:47 PM
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Joined: Jul 2010
Posts: 1,491 Oologah, Oklahoma
Big Squeeze
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pro stock
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I don't understand the question here???... Stealths are a cheap, Chinese copy of the Edelbrocks with the outside casting changed and plug angle moved...Modern even uses the EXACT same CNC porting program to port both heads...So, the question should be do you want a high quality, American made cylinder head or do you want to support the Chinese knock off?? Personally, I have not and will not build a motor with Stealth heads....
If you can't handle the truth, you're living a lie.......
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: '72CudaRacer]
#1455054
06/19/13 12:27 AM
06/19/13 12:27 AM
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Joined: Jan 2003
Posts: 1,979 s. e. pa.
calrobb2000
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hi, the eldebrocks will be higher quality and not need anything to run with your combo . i have used the 84cc with a 590 cam ,no machiene work needed ! no expencive trp to machiene shop for extra bs !
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: viperblue72]
#1455058
06/19/13 07:34 AM
06/19/13 07:34 AM
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Joined: Mar 2009
Posts: 2,457 Sydney,Australia
tex013
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Why not the CNC Stealths ?. Certainly a cost effective choice. I know there have been stealth faults but there has also been eddy faults as well as issues with Indy stuff . I guess it also matters if you get bent up over chinese or usa stuff . I have seen crap from both . I ran stealths from 2008 no worries , i have just fitted some Modern Stealth cnc heads and am more than happy with the result , i used my own springs retainers . So many people use and recommend Jeff do you think he would dump his reputation if he thought them no good . My program benefittedvfrom them , for allout race probly not the best . Straight plugs , a big plus . Eddys will probly need longer pushrods extra cost . Flow the same numbers . I don'think you will see much if any performance difference between the two . My two cents Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: '72CudaRacer]
#1455059
06/19/13 07:46 AM
06/19/13 07:46 AM
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Joined: Jan 2003
Posts: 9,963 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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Can you get a single replacement stealth, provided you still have the other one? If not, then it all boils down to what floats your boat. Unless you change a number of things in the combo, low speed torque (launch, traction) won't change much. A bigger port will add more to the upper rpm range, but not too much to the lower rpm range.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: gregsdart]
#1455060
06/19/13 08:16 AM
06/19/13 08:16 AM
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Joined: Dec 2006
Posts: 3,667 Arizona
Chris'sBarracuda
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Quote:
Can you get a single replacement stealth, provided you still have the other one? If not, then it all boils down to what floats your boat. Unless you change a number of things in the combo, low speed torque (launch, traction) won't change much. A bigger port will add more to the upper rpm range, but not too much to the lower rpm range.
.. Or just a pair of bare Stealth heads and put your stuff in them..
Another thought, aren't Indy EZ's were a direct bolt on.. Do they come in a M/W port.?? That might be a thought as well..
Chris..
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: Chris'sBarracuda]
#1455061
06/19/13 09:50 AM
06/19/13 09:50 AM
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Joined: Aug 2006
Posts: 2,141 junction city oregon
viperblue72
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Quote:
Quote:
Can you get a single replacement stealth, provided you still have the other one? If not, then it all boils down to what floats your boat. Unless you change a number of things in the combo, low speed torque (launch, traction) won't change much. A bigger port will add more to the upper rpm range, but not too much to the lower rpm range.
.. Or just a pair of bare Stealth heads and put your stuff in them..
Another thought, aren't Indy EZ's were a direct bolt on.. Do they come in a M/W port.?? That might be a thought as well..
Chris..
I asked that too then realized he has dome pistons, may not work.
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: Big Squeeze]
#1455064
06/19/13 01:07 PM
06/19/13 01:07 PM
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Anonymous
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Anonymous
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Quote:
I don't understand the question here???...
Not to tough to figure out.....
Edelbrock heads=$1750, plus need to be checked for guide clearance and valve job
Stealth heads=$1000, plus need to be checked for guide clearance, valve job, and pushrod clearance
CNC Stealth=$2000, Ready to go, checked by Modern Cyl. Head
CNC Stealth is a no-brainer
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: 383man]
#1455065
06/19/13 01:08 PM
06/19/13 01:08 PM
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Joined: May 2004
Posts: 3,210 robin hood country
deaks
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robin hood country
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HI Brian I run MCH RPM's milled to 76 cc, with .590 cam and JE domes in my 440 and a 950 hp holley. Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: deaks]
#1455066
06/19/13 01:21 PM
06/19/13 01:21 PM
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Joined: Apr 2011
Posts: 1,520 West Palm Beach, Florida
Copper Dart
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Where are the Eddy heads made? Are they not overseas too? WOW am I Confused! ricky
Common sense, the least common of all the senses. Mom.
For fear of ridicule, society stifles creativity. Ricky Valdes
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