Re: HEMI guys..... aluminum MP heads
[Re: AndyF]
#2899447
03/15/21 06:18 PM
03/15/21 06:18 PM
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Joined: Aug 2005
Posts: 4,103 Yes
sixpakdodge
master
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master
Joined: Aug 2005
Posts: 4,103
Yes
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Man you "Hemi" guys are touchy arent you. I have BEEN there DONE that with both I am not speculating That has been fairly consistent with what I've heard since the Pro Stock guys gave up on the Hemi 20+ years ago. The canted valve setup seems to have eventually ended up on top after years of back and forth. Of course the SS AH guys keep pushing the bar higher but I doubt that Pro Stock will ever go back to 426 Hemi engine. Of course this only applies to the super serious pro classes. Hemi engines still have a ton of appeal to street guys and bracket racers as well as some class cars. Just doesn't seem to be the way to go if someone wants to make max power per cubic inch normally aspirated. I don't know the reason, has something to do with the big chamber I suppose as well as how the heads flow in use. The Hemi heads flow like gang busters on the bench so that isn't the problem. I'm sure there are few engine builders who busted their pick trying to make them run who could explain the problem. I've never tried to run a Hemi in Pro Stock so I'm not the guy to ask. I think Pro Stock comes down to a cubic inch issue. I don't think the Hemi works well in the 500" setup (anymore). The last two serious efforts were Jeff Wick in the mid-90's, and Bill Dempsey in the late 80's. Reid Whisnant's DLI stuff was based on a KB block with heavily modified D5 heads, which were already 10 years old when Landy was working on that program. The current Sonny Leonard Chemi stuff has some similarity to a Chrysler Hemi as far as the the valve layout and chamber, but the exhaust is slightly canted compared to the intake. The piston is mostly flat. Again, cubic inches...these things are king in the Mountain Motor world.
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Re: HEMI guys..... aluminum MP heads
[Re: Gtxxjon]
#2899520
03/15/21 10:00 PM
03/15/21 10:00 PM
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Joined: Jan 2003
Posts: 2,763 Walton's Mountain, Pa
Steve1118
master
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master
Joined: Jan 2003
Posts: 2,763
Walton's Mountain, Pa
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No problem. No offense taken. I'm too old and cranky to be offended anyway.
I'll be 69 this year. My cousin bought a new aluminum nosed A864 Dodge and I helped on that as a teenager, until I started racing my own in 1969. Been racing them ever since. Still at it. Among my closest friends are many of the name SS/AH racers. Over the years was close to many of the legends, sadly, many of them have passed. Ronnie, Bill Stiles, Arlen.....the memories and pals have revolved around Hemi drag racing. Been a great time.
This one runs just where I want it. My doctors and wife don't get mad at me, and I don't run it hard. . I don't do this to impress anybody, and I've long since figured I'm not going to make money at it. Still having fun, grateful for the chance to have done it, and still do it when I feel like it. I've been blessed. So many never had the opportunity.
Gotta tell you, though, for sheer entertainment it's hard to beat this board. The stuff you hear. MP Hemi heads are junk. OK. You make more power with a wedge than with a Hemi. That's not what I've seen over 50 years, but, OK, if you say so. The Street Outlaws apparently have the answers. I don't argue with folks anymore, and I'm not into latest fad. You know, it's something. When I built that 65, it was top shelf. Then for years, it was "are you still running that antique?" Now, it's come full circle, it's cool again.
Keep going guys.
"Old age and treachery trumps youth and enthusiasm, every time!" East Central Director / Chrysler Power Magazine www.reasbeckracing.webs.com
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Re: HEMI guys..... aluminum MP heads
[Re: sixpakdodge]
#2899533
03/15/21 10:45 PM
03/15/21 10:45 PM
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Joined: Jan 2003
Posts: 2,763 Walton's Mountain, Pa
Steve1118
master
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master
Joined: Jan 2003
Posts: 2,763
Walton's Mountain, Pa
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In Pro Stock, the issue is the big rpm range. A good pal of mine raced a Hemi Arrow in IHRA Pro Stock, the former Arrow owned by the Barnetts. Barnett still did the motors.
He would use Barnett's dyno, and Warren Johnson also used it for his Oldsmobile motors (this was in the early and mid eighties). We found that the Hemis made more power than the Olds until about 8200, then the Hemi dropped, and the Olds (DRCE) kept going. The issue is that on the overlap cycle of the camshaft the charge would blow right through the chamber, as the valves oppose each other and when both valves were open the charge just blew through. Now, the SS/AH guys have some of that straightened out, mostly by changing valve angles and new, fancy valve trains. The Hemi 99 operated great at a lot of engine speed, too, as there were some design changes that fixed that, but NHRA's limiting the motors engine speed kind of screwed them. That's one of the reasons AJ quit.
But, for ham and egg racers, like most of us are, I'm still sold on the Hemi. Do I think you make more power with a wedge than with a hemi, with similar engine combos? No, I don't. But, I'm not going to argue about it. Do I think MP heads are junk? No, I don't, but I'm not going to argue about that, either. Whatever. Believe what you want.
I don't know why I still do this. I must be nuts, but I love it. As I mentioned, our little group runs 4 Hemi cars, 2 Indy wedges, and even a Duster with an Indy headed 416 small block that flies for what it is. But, I don't drink, don't hang out in barrooms, so, I gotta do something. Over the years I've accumulated Hemi blocks, heads, cams, all kinds of stuff. I just bought a set of Indy Victors, and I don't know what I'm going to do with them. I must need my head examined. I suppose my boys will replace one of their wedges with a Hemi one day .
"Old age and treachery trumps youth and enthusiasm, every time!" East Central Director / Chrysler Power Magazine www.reasbeckracing.webs.com
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Re: HEMI guys..... aluminum MP heads
[Re: Al_Alguire]
#2899615
03/16/21 10:34 AM
03/16/21 10:34 AM
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Joined: Nov 2020
Posts: 348 Isle of Sheeps
Gtxxjon
enthusiast
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enthusiast
Joined: Nov 2020
Posts: 348
Isle of Sheeps
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Nice replies GUYS! If it weren't for your love and passion for these 'old crates' then this site and many others 'WOULD NOT EXIST'! The problem now is that there is a lack of CHEAP Moparts so 'lesser POOR folks' won't get involved. Lots of guys are still running Mopars, BUT with Chevparts...! I feel sad for them because Moparts (engine/trans/axles) are what its ALL ABOUT! If the 'POWERS TO BE' don't get some cheap engines/transmissions available then its all gonna fade away... All I want is a MOPAR PERFORMANCE aluminum hemi head and its 'LIKE PULLING TEETH'. The days of hemi's running anywhere 'but in the USofA' are coming soon. It will soon be Mopars running with CHEVPARTS here, there and everywhere... FORGET running a hemi, that's a given...
Last edited by Gtxxjon; 03/16/21 10:37 AM.
Carpe diem, quam minimum credula postero, thanx Horace!
There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...
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Re: HEMI guys..... aluminum MP heads
[Re: Al_Alguire]
#2899628
03/16/21 10:57 AM
03/16/21 10:57 AM
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Joined: Jan 2003
Posts: 2,763 Walton's Mountain, Pa
Steve1118
master
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master
Joined: Jan 2003
Posts: 2,763
Walton's Mountain, Pa
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Well, OK then.
I don't know who is sensitive, I really don't care. I disagree. But, if you are running that fast with NA motors, you are messing around with big $$ and modified stuff that the average guy here is not even relating to. I guarantee you nothing in that combo comes out of a Mopar Performance box. So, good job, but I guarantee you old guys like me are not really interested. It's nothing I can relate to, nor afford. Way too fast for me.....I don't even WANNA do that. I still like using factory and factory type stuff. That kind of stuff relates to ham and egg old guys like me about as much as top fuel dragster does.
Those are impressive performances, for sure, but it's not something I can even relate to, nor am interested in.
Last edited by Steve1118; 03/16/21 02:49 PM.
"Old age and treachery trumps youth and enthusiasm, every time!" East Central Director / Chrysler Power Magazine www.reasbeckracing.webs.com
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Re: HEMI guys..... aluminum MP heads
[Re: gsmopar]
#2899784
03/16/21 05:23 PM
03/16/21 05:23 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 terrible! Worst engine ever! Everyone should get rid of them ASAP! Send all your parts to me for proper disposal.
Rich H.
Esse Quam Videri
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Re: HEMI guys..... aluminum MP heads
[Re: ZIPPY]
#2899835
03/16/21 07:41 PM
03/16/21 07:41 PM
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Joined: Jan 2004
Posts: 8,343 fredericksburg,va
cudaman1969
master
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master
Joined: Jan 2004
Posts: 8,343
fredericksburg,va
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They are terrible! Worst engine ever! Everyone should get rid of them ASAP! Send all your parts to me for proper disposal. Like oil that’s been on the shelf for over a year lol
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Re: HEMI guys..... aluminum MP heads
[Re: cudaman1969]
#2900108
03/17/21 03:29 PM
03/17/21 03:29 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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Like oil that’s been on the shelf for over a year lol
That's all junk too! Send it all to me, I'll get rid of it
Rich H.
Esse Quam Videri
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