Best LS7 head for maximum hp and torque?
Thread Starter
TECH Addict
Joined: Sep 2010
Posts: 2,898
Likes: 467
Best LS7 head for maximum hp and torque? I am wanting to know if I had an engine with a 4.125 or larger bore, which LS7 head will make the most torque and hp?
Would it be worth getting an after market LS7 head or is CNC'ing the GM LS7 head good enough?
How much hp do the best aftermarket LS7 heads make compared to the CNC GM LS7?
Would it be worth getting an after market LS7 head or is CNC'ing the GM LS7 head good enough?
How much hp do the best aftermarket LS7 heads make compared to the CNC GM LS7?
The head with the SBE LS7 record is a Darin Morgan worked over Stock Casting. That motor is in a GN. pretty cool car.
probably the most consistent big performer is the Mamo 265. He's got a V2 coming out I think that looks to have the best port velocity out there.
Brodix 273 look strong, but are typically in the hands of other porters, so you have to look up who is using them (AHP for example...)
probably the most consistent big performer is the Mamo 265. He's got a V2 coming out I think that looks to have the best port velocity out there.
Brodix 273 look strong, but are typically in the hands of other porters, so you have to look up who is using them (AHP for example...)
TECH Regular
Joined: Sep 2010
Posts: 467
Likes: 195
Such a loaded question.......
Where do you want that power band to be for this max HP and TQ result ?
If you're towing a boat or toy hauler, that will suggest a certain low RPM package.......heavy street car/cruiser, another......... drag race car setup for high RPM, another package.
You need to define what the usage is before you go any further.
Large bore engines in excess of 4.125 can take advantage of the unshrouded intake valves in the aftermarket world, where 2.225 can be fit in.
Large spring pockets in the aftermarket world can allow you to run a bigger spring, when applicable, for high RPM valve control.
and we're not even talking about cam lift numbers where you may need to run rockers assemblies that can handle the really high lift numbers...i.e shaft mounts.
.
There's just so much more to question before you can get a educated response.
Where do you want that power band to be for this max HP and TQ result ?
If you're towing a boat or toy hauler, that will suggest a certain low RPM package.......heavy street car/cruiser, another......... drag race car setup for high RPM, another package.
You need to define what the usage is before you go any further.
Large bore engines in excess of 4.125 can take advantage of the unshrouded intake valves in the aftermarket world, where 2.225 can be fit in.
Large spring pockets in the aftermarket world can allow you to run a bigger spring, when applicable, for high RPM valve control.
and we're not even talking about cam lift numbers where you may need to run rockers assemblies that can handle the really high lift numbers...i.e shaft mounts.
.
There's just so much more to question before you can get a educated response.
Prc has the best offering right meow and especially the best bang for the buck plus near 0 wait time. They literally manufacture the whole thing from a rough casting also. Their 285cc heads are serious. And their new steel roller rockers in either adj or non adj are a game changer.
Trending Topics
Honestly the BEST for max hp that I know of is the RFD LSR. Flows 500 cfm, but the heads are a good inch taller than stock castings. Canted valve, etc all the good stuff. 52cc chambers.
As you no doubt guessed not very budget friendly and no it will not clear the f body cowl.
Then you gotta budget all the other custom stuff to make them work like rockers, intake, not even sure if ls7 headers will bolt up.
But you said max hp and no constraints listed, so that is the best I can tell you. Probably not going to make your short list though.
As you no doubt guessed not very budget friendly and no it will not clear the f body cowl.
Then you gotta budget all the other custom stuff to make them work like rockers, intake, not even sure if ls7 headers will bolt up.
But you said max hp and no constraints listed, so that is the best I can tell you. Probably not going to make your short list though.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
Originally Posted by tech@WS6store
Prc has the best offering right meow and especially the best bang for the buck plus near 0 wait time. They literally manufacture the whole thing from a rough casting also. Their 285cc heads are serious. And their new steel roller rockers in either adj or non adj are a game changer.
Thread Starter
TECH Addict
Joined: Sep 2010
Posts: 2,898
Likes: 467
Some very interesting comments.
I'm liking the comment about the Darin Morgan LS7 head.
Darth, how would this head compare to the Brodix BR7?
If you had the exact same combination what do you assume would be the power difference?
I'm liking the comment about the Darin Morgan LS7 head.
Darth, how would this head compare to the Brodix BR7?
If you had the exact same combination what do you assume would be the power difference?
I think for fit, finish, options built in, and flow capabilities for the money the PRC are it.
The brodix and mast actually have odd issues that most people dont know about. One is the poorly cast/machined port for the coolant temp sensor. I talked to wcch and they have had to machine each im that area first off. Took a couple snapped sensors before they noticed it. Thats one point. Unless they fixed that in the past 8 months
The mast are physically larger also nad have fitment issues as well in more cramped engine bays like my friends fbody and use longer truck wires too.
The all pro are likely one of the best also. Ive never personally seen any issues or heard of any and richard is top dog in my book.
The brodix and mast actually have odd issues that most people dont know about. One is the poorly cast/machined port for the coolant temp sensor. I talked to wcch and they have had to machine each im that area first off. Took a couple snapped sensors before they noticed it. Thats one point. Unless they fixed that in the past 8 months
The mast are physically larger also nad have fitment issues as well in more cramped engine bays like my friends fbody and use longer truck wires too.
The all pro are likely one of the best also. Ive never personally seen any issues or heard of any and richard is top dog in my book.
Thread Starter
TECH Addict
Joined: Sep 2010
Posts: 2,898
Likes: 467
I think for fit, finish, options built in, and flow capabilities for the money the PRC are it.
The brodix and mast actually have odd issues that most people dont know about. One is the poorly cast/machined port for the coolant temp sensor. I talked to wcch and they have had to machine each im that area first off. Took a couple snapped sensors before they noticed it. Thats one point. Unless they fixed that in the past 8 months
The mast are physically larger also nad have fitment issues as well in more cramped engine bays like my friends fbody and use longer truck wires too.
The all pro are likely one of the best also. Ive never personally seen any issues or heard of any and richard is top dog in my book.
The brodix and mast actually have odd issues that most people dont know about. One is the poorly cast/machined port for the coolant temp sensor. I talked to wcch and they have had to machine each im that area first off. Took a couple snapped sensors before they noticed it. Thats one point. Unless they fixed that in the past 8 months
The mast are physically larger also nad have fitment issues as well in more cramped engine bays like my friends fbody and use longer truck wires too.
The all pro are likely one of the best also. Ive never personally seen any issues or heard of any and richard is top dog in my book.
I haven't seen any SBE results on the BR7. it continues to intrigue me based on what looks like great potential. But I would think the heads that went to Darin would end up superior. Hard to make a power difference assumption, as I have not seen a sbe BR7 build to compare. FWIW that Darin head is 704 RWHP, so close to 850 bhp. That's pretty badass.
Best LS7 head, I'd call Darin Morgan at Reher - Morrison, Tony Mamo at Mamo Motorsports and Brett Land at Land Speed Cylinder Heads. All have Depending on budget I'm sure all of the three can do a killer cylinder head for your application.
Darin did the LS3 heads for my 99 TA and is outstanding to work with on a project.
Tony did a ported LSXR intake for my planned 408 and is outstanding to work with on a project.
Brett did the LS6/243/799's for same 408 and is outstanding to work with on a project.
If I ever get to do a 427+ these are the cylinder head porters of choice. TEA & BTR rock too
Darin did the LS3 heads for my 99 TA and is outstanding to work with on a project.
Tony did a ported LSXR intake for my planned 408 and is outstanding to work with on a project.
Brett did the LS6/243/799's for same 408 and is outstanding to work with on a project.
If I ever get to do a 427+ these are the cylinder head porters of choice. TEA & BTR rock too
Thread Starter
TECH Addict
Joined: Sep 2010
Posts: 2,898
Likes: 467
I think cost wise it would be best to just use LS7 heads and send them to Darin Morgan.
Easier to find parts too.
In regards to the LS3 heads does a darin morgan GM LS3 version make more low end torque than a stock LS3 head?
Easier to find parts too.
In regards to the LS3 heads does a darin morgan GM LS3 version make more low end torque than a stock LS3 head?
I am wanting to know if I had an engine with a 4.125 or larger bore, which LS7 head will make the most torque and hp?
Would it be worth getting an after market LS7 head or is CNC'ing the GM LS7 head good enough?
How much hp do the best aftermarket LS7 heads make compared to the CNC GM LS7?
Would it be worth getting an after market LS7 head or is CNC'ing the GM LS7 head good enough?
How much hp do the best aftermarket LS7 heads make compared to the CNC GM LS7?
TECH Regular
Joined: Sep 2010
Posts: 467
Likes: 195
Mikey misses his old car LOL
TECH Veteran
Joined: Sep 2014
Posts: 4,892
Likes: 703
From: Mississippi