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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: '72CudaRacer]
#1455068
06/19/13 01:58 PM
06/19/13 01:58 PM
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Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Where did the Stealth head crack and is it not repairable? I don't bother following the Stealth-related posts often; is this a common problem with them? I don't recall the Edelbrocks having cracking issues, etc., although I've seen first-hand how IMO they still need to have the guide clearances & valve jobs checked & corrected OOB. Performance-wise there shouldn't be any significant difference with the same level of prep work, considering Brandon's R&D for port & chamber design was simply sending an Edelbrock Performer RPM to China along w/ an OEM iron head and giving the foundry the following instructions: 1. Make new head rook rike Ederbrock on inside 2. Make new head rook rike Chrysrer iron head on outside  (My apology to all Asian and Asian-American readers who take offense to my accent parody.  ) EDIT: Just re-read the orginal post and saw where the OP stated "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)." 
Last edited by BradH; 06/19/13 02:14 PM.
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: BradH]
#1455069
06/19/13 02:01 PM
06/19/13 02:01 PM
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Joined: Dec 2003
Posts: 3,363
DTW
drmopar
master
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master
Joined: Dec 2003
Posts: 3,363
DTW
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I bought a set of CNC'd stealth heads for my 451 I had in my last road runner vert and they still needed to be clearanced for pushrods. Just sayin.
If it were a racecar, Edelbrock heads. If it was a show car (FAST looks) then Stealth all the way.
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RM27H9G 4 speed F8/tan guts
RS27L9G auto B5/black guts
WM23H9G auto F5/green guts
2021 Challenger 392 Indigo/black guts
2019 Charger Daytona R/T F8 on black
2018 Ram Sport Hemi 4x4
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: Thumperdart]
#1455072
06/19/13 02:35 PM
06/19/13 02:35 PM
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Joined: Jan 2003
Posts: 6,266
Renton Washington
Triple Threat
master
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master
Joined: Jan 2003
Posts: 6,266
Renton Washington
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Quote:
Quote:
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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 [/quote
You still end up with $2,000 worth of japanese crap.......... 
Unlikely they're made in Japan. Not all countries are the same, and there are chinese foundries that produce extremely high quality products, they're just not cheap so people don't use them.
If it was my Money RPM heads or the EZ head. 
-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: JohnRR]
#1455074
06/19/13 02:51 PM
06/19/13 02:51 PM
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Joined: Oct 2012
Posts: 1,106
Northeast
VincentVega
super stock
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super stock
Joined: Oct 2012
Posts: 1,106
Northeast
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Guess I'll go with bare Edelbrock heads... just noticed the aluminum "452" heads (good flow out of the box) but I think I'd rather screw around with angle plugs anyway
casting problems are scary, and hard to see
Looking for 1975 through 1978 B body 4 door sedan sheet metal or parts cars - monaco, fury, coronet. Please let me know
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: JohnRR]
#1455076
06/19/13 03:34 PM
06/19/13 03:34 PM
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Joined: Jan 2003
Posts: 4,395
The Pale Blue Dot
Skeptic
master
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master
Joined: Jan 2003
Posts: 4,395
The Pale Blue Dot
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Quote:
\ Hope I don't get banned for this ....
Really John, that's just trolling there. That engine was hydraulic locked or the head bolts weren't torqued properly.
Thumper- they are Chinese heads....
I bought the Eddie heads- the Stealths weren't on the market yet- and would recommend them, just because they are made in the USA. The Eddie heads are known to need setup work, no different than ANY aftermarket head- some of the MP stuff needs Major work. I'm having Brian @ IMM do a full setup and porting appropriate to my build. He's given me a very reasonable price and I like supporting a local shop.
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: JohnRR]
#1455077
06/19/13 03:43 PM
06/19/13 03:43 PM
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Joined: Jan 2003
Posts: 13,385
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,385
Marion, South Carolina [><]
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Quote:
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Where did the Stealth head crack and is it not repairable?
Hope I don't get banned for this ....
Holy crap! What's the story on that head?
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: VincentVega]
#1455078
06/19/13 04:04 PM
06/19/13 04:04 PM
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Joined: Apr 2007
Posts: 2,826
NY usa
540challenger
master
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master
Joined: Apr 2007
Posts: 2,826
NY usa
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Quote:
Guess I'll go with bare Edelbrock heads... just noticed the aluminum "452" heads (good flow out of the box) but I think I'd rather screw around with angle plugs anyway
casting problems are scary, and hard to see
IF i remember right the MP 452 head is cast by edelbrock and it is basiclly a RPM head with straight plugs
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: hudsonhornet7x]
#1455082
06/19/13 05:46 PM
06/19/13 05:46 PM
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Joined: Nov 2004
Posts: 3,544
Syracuse,NY
CompWedgeEngines
master
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master
Joined: Nov 2004
Posts: 3,544
Syracuse,NY
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Been 10.07 @132 in a 68 GTX weighing 3600# race weight. Easy nines in a lighter car for sure. Cam could have been optimized as well, but this guy is a hardcore bracket racer, and didnt also want to deal with safety equipment running in the nines. He was running a 493 combo. They will work great from 440-512 C.I. All standard off the shelf stuff, not even ported intake etc...very user friendly.
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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Re: Eldebrock RPM's vs. 440 Source Stealth heads
[Re: JohnRR]
#1455086
06/19/13 05:59 PM
06/19/13 05:59 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
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Where did the Stealth head crack and is it not repairable?
Hope I don't get banned for this ....
Holy crap! What's the story on that head?
I don't remember but when I saw it I right clicked SAVE ... the person that posted it up had more than one that was broken like that. I doubt they were hydro locked, this was a known issue with the early stealths, I hope for the sword swallowers sake that they don't have that issue anymore.
Dom, there is a huge difference between stuff made in Japan and the stuff made in China , Japanese stuff was on par with current china back in the 70's , much better today .
How fortunate for us that we have a world traveler that has his finger on the pulse of worldwide manufacturing quality  Perhaps he can take a break from traveling someday, to actually finish one of the 3 engines he has been "building" for the last 10 years....  ...maybe then he can offer some first hand, REAL experiences... 
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