Re: Mopar aluminum hemi heads
[Re: Cape]
#3161328
07/20/23 01:46 PM
07/20/23 01:46 PM
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Joined: Jan 2003
Posts: 17,907 S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,907
S.E. Michigan
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They are basically a stock replacement style head but in aluminum, and in out of the box form flow just a little better than stock.
Designed for stock rockers, stock shafts, stock hold downs, stock hardware, etc etc
All that changes, big time, when the head is ported....as the performance of several members' cars will show.
Did you want historic perspective or exactly what kind of info?
I got it from both sides, man! Customer and Marketing.... but "don't get me started" is the first thought that comes to mind LOL.
Rich H.
Esse Quam Videri
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Re: Mopar aluminum hemi heads
[Re: Cape]
#3161348
07/20/23 03:03 PM
07/20/23 03:03 PM
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Joined: May 2019
Posts: 713 Lake Villa Il
INTMD8
super stock
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super stock
Joined: May 2019
Posts: 713
Lake Villa Il
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Didn't some of these have issues with dropping valve seats? Not sure, maybe I'm not remembering correctly.
69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
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Re: Mopar aluminum hemi heads
[Re: Cape]
#3161357
07/20/23 03:23 PM
07/20/23 03:23 PM
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Joined: Jan 2012
Posts: 2,677 Stuttgart, Arkansas
rickseeman
master
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master
Joined: Jan 2012
Posts: 2,677
Stuttgart, Arkansas
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Thanks for the info. I have a chance to by a set but just not sure. There lightly ported as well. Just not sure. I have a set of iron ones on my car now that we’re CNC ported and flow about 410cfm. The motor makes 825 with those heads, just wondering weather it’s worth it to buy those heads or just wait for stage 5 ones or edelbrock. I doubt there will ever be anymore Stage V's. And that's very bad.
2011 Drag Pak Challenger
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Re: Mopar aluminum hemi heads
[Re: Cape]
#3161376
07/20/23 04:35 PM
07/20/23 04:35 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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I have those heads on my hemi. Makes somewhere in the 850 hp ballpark on motor only. They are CNC ported by MCH and max intake flow was 429.1 cfm if I recall correctly. I've been running them since 2006 w/ no real issues. I was worried after hearing about dropped seats from some people, but no issues w/ mine.
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: Mopar aluminum hemi heads
[Re: second 70]
#3161709
07/21/23 04:54 PM
07/21/23 04:54 PM
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Joined: Feb 2014
Posts: 1,713 central il.
second 70
top fuel
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top fuel
Joined: Feb 2014
Posts: 1,713
central il.
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I also have those heads on my Hemi with no problems. Those heads were made for weight loss which if I remember is around 50#s a head. When going from iron to aluminum heads you'll need to increase the compression because it'll lose compression due to heat loss. I guess I'm not sure if it really loses compression or it just loses power due to the heat loss???? But if you just change heads the engine will be a little down on power if they flow the same. Aluminum plus 1. On the weight the original cast heads were a little over 60 but the mopar cast replacements were around 20#s heavier. The aluminum weigh a little over 30. So weight savings depends on which cast heads you have.
Last edited by second 70; 07/21/23 05:05 PM.
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Re: Mopar aluminum hemi heads
[Re: cudaman1969]
#3162101
07/22/23 08:18 PM
07/22/23 08:18 PM
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Joined: Jan 2004
Posts: 4,580 Motor City
6PKRTSE
master
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master
Joined: Jan 2004
Posts: 4,580
Motor City
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I also have a pair of the Mopar/Edelbrock heads on my Hemi also with no issues.
1963 Belvedere 440 Max Wedge Tribute 1970 Charger R/T S.E. 440 Six Pack 1970 Challenger R/T, 528 Hemi 1970 Charger 500 S.E. 440 4 BBL 1970 Plymouth Road Runner 383 1974 Chrysler New Yorker 440 1996 2500 RAM 488 V-10 4X4 2004 3500 Dually Cummins 4x4 2012 Challenger R/T Classic.
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Re: Mopar aluminum hemi heads
[Re: rickseeman]
#3162199
07/23/23 07:13 AM
07/23/23 07:13 AM
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Joined: Jan 2003
Posts: 6,433 Abilene, Texas
fastmark
master
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master
Joined: Jan 2003
Posts: 6,433
Abilene, Texas
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Thanks for the info. I have a chance to by a set but just not sure. There lightly ported as well. Just not sure. I have a set of iron ones on my car now that we’re CNC ported and flow about 410cfm. The motor makes 825 with those heads, just wondering weather it’s worth it to buy those heads or just wait for stage 5 ones or edelbrock. I doubt there will ever be anymore Stage V's. And that's very bad. Please explain that there will never be anymore stage V,s? Did they go out of business?
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Re: Mopar aluminum hemi heads
[Re: fastmark]
#3162218
07/23/23 08:49 AM
07/23/23 08:49 AM
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Joined: Jan 2012
Posts: 2,677 Stuttgart, Arkansas
rickseeman
master
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master
Joined: Jan 2012
Posts: 2,677
Stuttgart, Arkansas
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He died. There isn't anybody there capable of carrying it on. It's for sale but no buyers have stepped up. This is a major hit to the 426 Hemi community like when Keith Black went down. And when Mopar Performance died. (I got on the Mopar website last month and there were 2 or 3 part numbers there for 426 Hemi's.) This is really bad.
2011 Drag Pak Challenger
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Re: Mopar aluminum hemi heads
[Re: Cape]
#3162277
07/23/23 10:40 AM
07/23/23 10:40 AM
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Joined: Jan 2012
Posts: 2,677 Stuttgart, Arkansas
rickseeman
master
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master
Joined: Jan 2012
Posts: 2,677
Stuttgart, Arkansas
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Your headers won't work. Your pistons won't work. Forget Millennium. You don't need to open that can of worms.
2011 Drag Pak Challenger
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Re: Mopar aluminum hemi heads
[Re: rickseeman]
#3162309
07/23/23 11:59 AM
07/23/23 11:59 AM
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Joined: Jan 2012
Posts: 2,677 Stuttgart, Arkansas
rickseeman
master
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master
Joined: Jan 2012
Posts: 2,677
Stuttgart, Arkansas
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And of course every time you want to change intake manifolds it will be at least $3,000 for a sheet metal intake because nobody makes an intake manifold for Millenniums. Or Ray Barton will make you a billet intake for $8,000 and it will be beautiful.
Last edited by rickseeman; 07/24/23 09:39 AM.
2011 Drag Pak Challenger
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Re: Mopar aluminum hemi heads
[Re: Cape]
#3162553
07/23/23 09:11 PM
07/23/23 09:11 PM
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Joined: Jan 2012
Posts: 2,677 Stuttgart, Arkansas
rickseeman
master
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master
Joined: Jan 2012
Posts: 2,677
Stuttgart, Arkansas
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I think the Edelbrock heads are available now. A little higher price but they are a great way to go.
2011 Drag Pak Challenger
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Re: Mopar aluminum hemi heads
[Re: rickseeman]
#3162670
07/24/23 11:12 AM
07/24/23 11:12 AM
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Joined: Jan 2012
Posts: 2,677 Stuttgart, Arkansas
rickseeman
master
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master
Joined: Jan 2012
Posts: 2,677
Stuttgart, Arkansas
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I guess I should state the obvious. If you need heads, push the button now. You can't depend on anyone to have any Mopar part when you need it. The last set of Edelbrock heads I bought I waited over a year for. And now that Stage V is no longer an option that is going to make buying heads even worse.
2011 Drag Pak Challenger
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