how big can you make one?
Moderator: scottm
-
- Posts: 6
- Joined: Tue Sep 02, 2003 12:28 pm
how big can you make one?
does anybody know how big you can make one of these new hemis. How much cylinder wall do they have? I was wondering if you could bore and stoke one of these new ones to make it into a 426 or atleast another nostalgic number like 392.
-
- Posts: 149
- Joined: Thu Jul 17, 2003 9:31 am
- Location: Oceanside
Re: how big can you make one?
You can puchase a 528 crate hemi from a local speed shop that deals in Mopar Products. I don't know for sure if the 6.1 Hemi is the same block. We have to wait and see at the next auto showing.z06corvette427 wrote:does anybody know how big you can make one of these new hemis. How much cylinder wall do they have? I was wondering if you could bore and stoke one of these new ones to make it into a 426 or atleast another nostalgic number like 392.
Steve
Future Purchase: 2006 Charger SRT-8/2006 MegaCab 6.1 Hemi
"Coming soon 600HP SRT-10 to pull the SRT-4 & SRT-8 Charger to the track!"
Future Purchase: 2006 Charger SRT-8/2006 MegaCab 6.1 Hemi
"Coming soon 600HP SRT-10 to pull the SRT-4 & SRT-8 Charger to the track!"
I have heard that these new Hemi blocks
are not designed to be rebuilt after death.
If that is true, I imagine they cannot have
any boring done to them. We will have to
see if the 6.1 uses the same block or not.
are not designed to be rebuilt after death.
If that is true, I imagine they cannot have
any boring done to them. We will have to
see if the 6.1 uses the same block or not.
Scott Moseman
http://www.TheHEMI.com/
http://www.MoparEVs.com/
http://www.MyAutoMaintenance.com/
Follow Us:
http://www.TheHEMI.com/
http://www.MoparEVs.com/
http://www.MyAutoMaintenance.com/
Follow Us:
-
- Posts: 149
- Joined: Thu Jul 17, 2003 9:31 am
- Location: Oceanside
It maybe true. Someone from Hughes purchased a wreck truck (new one) and seen the bore liners are very thin. Not much to rebore with though.
May hve to talk to Hughes on that one.
6.1ltr and the 5.7 are almost the same minus 1-2mpg. That is not the issue though when buyin large engines.
May hve to talk to Hughes on that one.
6.1ltr and the 5.7 are almost the same minus 1-2mpg. That is not the issue though when buyin large engines.
Steve
Future Purchase: 2006 Charger SRT-8/2006 MegaCab 6.1 Hemi
"Coming soon 600HP SRT-10 to pull the SRT-4 & SRT-8 Charger to the track!"
Future Purchase: 2006 Charger SRT-8/2006 MegaCab 6.1 Hemi
"Coming soon 600HP SRT-10 to pull the SRT-4 & SRT-8 Charger to the track!"
-
- Posts: 194
- Joined: Mon Jul 14, 2003 7:29 pm
- Location: Phoenix AZ
-
- Posts: 149
- Joined: Thu Jul 17, 2003 9:31 am
- Location: Oceanside
Compression yes (9.6:1) but cam no. It will have a larger torque than the current flat line torque in the 5.7.MG42pillbox wrote:True that is not an issue, But with only .4L of more displacement there must be more than just that to give it that much worse gas mileage. Will it have the same compression and cam?
Steve
Future Purchase: 2006 Charger SRT-8/2006 MegaCab 6.1 Hemi
"Coming soon 600HP SRT-10 to pull the SRT-4 & SRT-8 Charger to the track!"
Future Purchase: 2006 Charger SRT-8/2006 MegaCab 6.1 Hemi
"Coming soon 600HP SRT-10 to pull the SRT-4 & SRT-8 Charger to the track!"
-
- Posts: 194
- Joined: Mon Jul 14, 2003 7:29 pm
- Location: Phoenix AZ
-
- Posts: 194
- Joined: Mon Jul 14, 2003 7:29 pm
- Location: Phoenix AZ
-
- Posts: 149
- Joined: Thu Jul 17, 2003 9:31 am
- Location: Oceanside
Asked yourself why they didn't bring back the old hemi 426?mnc2886 wrote:I agree, old 426 hemi in a sport truck and car. And a big block, not a small block bored or stroked to that. I want a big block damnit!!!
1) Could not pass today's SMOG standard
2) NOt as efficent in design as today's hemi engines.
3) The next big block is currently being tested and it produces more power than the old hemi for a production vehicle.
Steve
Future Purchase: 2006 Charger SRT-8/2006 MegaCab 6.1 Hemi
"Coming soon 600HP SRT-10 to pull the SRT-4 & SRT-8 Charger to the track!"
Future Purchase: 2006 Charger SRT-8/2006 MegaCab 6.1 Hemi
"Coming soon 600HP SRT-10 to pull the SRT-4 & SRT-8 Charger to the track!"
-
- Posts: 6
- Joined: Tue Sep 02, 2003 12:28 pm
Someone needs to make a aftermarket new hemi small block with more material much like World Castings does with their Chevy-based Merlin BBs and Motown SBs. The hopped-up big-inch smallblocks are the trend in streetmachines due to their lighter weight. Can you imagine a 390+cid new fuel injected smallblock hemi in an old 'cuda. That would be incredible! I'm sure it wont happen for quite a few years though, and thats only if the crate 5.7s and 5.7L aftermarket parts actually catch on and they can keep the cost down.
-
- Posts: 149
- Joined: Thu Jul 17, 2003 9:31 am
- Location: Oceanside
-
- Posts: 149
- Joined: Thu Jul 17, 2003 9:31 am
- Location: Oceanside
Isn't the top Merline engine is a 6XX cube motor? However, not a hemi though. N/A is 7XX HP with 10.1 compression.mnc2886 wrote:I agree, old 426 hemi in a sport truck and car. And a big block, not a small block bored or stroked to that. I want a big block damnit!!!
Steve
Future Purchase: 2006 Charger SRT-8/2006 MegaCab 6.1 Hemi
"Coming soon 600HP SRT-10 to pull the SRT-4 & SRT-8 Charger to the track!"
Future Purchase: 2006 Charger SRT-8/2006 MegaCab 6.1 Hemi
"Coming soon 600HP SRT-10 to pull the SRT-4 & SRT-8 Charger to the track!"
-
- Posts: 194
- Joined: Mon Jul 14, 2003 7:29 pm
- Location: Phoenix AZ
-
- Posts: 6
- Joined: Tue Sep 02, 2003 12:28 pm
the merlins are based off the big blocks and yeah i think their biggest is a 632? cid....the motowns are based off of smallblocks and their newest is a 454 "smallblcok". I like the idea of making the factory blocks stronger with some more material for increased displacement. I wish somebody would recast some of the mopar blocks for the hardcore builders like World Products does. maybe cast some beefed aluminum blocks?
-
- Posts: 194
- Joined: Mon Jul 14, 2003 7:29 pm
- Location: Phoenix AZ
z06corvette427 wrote:the merlins are based off the big blocks and yeah i think their biggest is a 632? cid....the motowns are based off of smallblocks and their newest is a 454 "smallblcok". I like the idea of making the factory blocks stronger with some more material for increased displacement. I wish somebody would recast some of the mopar blocks for the hardcore builders like World Products does. maybe cast some beefed aluminum blocks?
Well do the 800 ci Keith Black blocks count?..... It all depends on how much you want to spend.... For every American Racing Application, Mopar has their foot in the door and as always are ahead of the game.
One whose life is Infecting others with Falsehood, shall fall greater than any of their Victims.
-
- Posts: 194
- Joined: Mon Jul 14, 2003 7:29 pm
- Location: Phoenix AZ
Its no where near a full SPHERE Thats the whole point,...... (sigh) the 66 426 Hemi is less of a Hemi than the 392, the 2003 Hemi is just as much HEMI as the 66,...... What difference does it make if it 100% Hemi like the mid 50s 392 or 95 or so % like the 66 426........ It makes a full "SPHERE" <--- Key Word....... If the new Hemi isnt a real Hemi neither is the 66 426,...... But it is a real hemi....panic wrote:This might be a good time to define the terms. As to geometry, none of the motors mentioned (392, 426, 4.7, 6.1) are hemi. All the chambers are partial sections at best. The modern engine closest to a true hemi is the 1957-71 Harley Sportster.
The new (6.1, etc.) "hemi" motors do not use the spherical-section model at all. It's called a hemi because the factory thinks you'll buy it. In terms of chamber design it's as much a hemi as it is a Toyota (or as a Toyota is a hemi).
(picture from Gary Pavlovich's 318 poly race motor sight: http://www.1962to1965mopar.ornocar.com/poly318.html)
The theoretical advantages to hemi chambers (low intake port down-draft angle, low surface to volume ratio) date to pre-WW2, and are not efficient compared to modern shallow high-swirl quench multi-section chambers, which is what every current design uses.
No designer would give up the advantages mentioned to mimic an obsolete concept.
Th 6.1 has closer bore centers than a 318 (4.09" vs. 4.46"), in fact smaller than any other American V8 including the Buick 215", and lower deck height (9.09" vs. 9.60"), so its maximum size is considerably smaller than the LA motors.
How hard is this to uderstand.
Whats the point of people trying to denounce the fact,..... The Motor deishgn is the most powerfull Automotive engine of all time either way, what difference does it make.
One whose life is Infecting others with Falsehood, shall fall greater than any of their Victims.
-
- Posts: 194
- Joined: Mon Jul 14, 2003 7:29 pm
- Location: Phoenix AZ
Be wrong??? Ok I guess you have a long way to go, but anyway.... Do you think I was attacking you? Im talking about the fact that people call the Magnum 5.7 a half hemi,.... and Im sorry but the 4.7 is not a Hemipanic wrote:"Whats the point of people trying to denounce the fact,..... The Motor deishgn is the most powerfull Automotive engine of all time either way"
Compared to what?
I think you have a different understanding of what the words "denounce" and "fact" mean than the rest of the world.
Is this how you win most of your arguments?
1. be wrong
2. repeat your original contention continuously (as if accuracy was a cumulative process)
3. finally the other side realizes that you just don't understand why what you're saying doesn't work
4. they give up
5. you win
One whose life is Infecting others with Falsehood, shall fall greater than any of their Victims.
-
- Posts: 194
- Joined: Mon Jul 14, 2003 7:29 pm
- Location: Phoenix AZ
Just as long as the perspective is understood, it happens. No big dealpanic wrote:Sorry, the 4.7 reference was a typo on my part, used the wrong picture etc.
"Denounce" does not refer to a dispute over physical properties, physics or dimensions. It is an attack on the character, behavior or motive of another person.
I should not have been quite as vehement.
One whose life is Infecting others with Falsehood, shall fall greater than any of their Victims.