LS7 Valvetrain/Cam
Thread Starter
TECH Fanatic
Joined: Oct 2005
Posts: 1,698
Likes: 0
From: DFW
LS7 Valvetrain/Cam Sorry for making another thread but I wanted everyones mind around this subject!!!
I am SUPER scared of my LS7 Failing on me.....
Which Valvetrain set up should I buy? Show me the money....
I am going to get LG Super Pro's + some sort of cam
But I want the SICKEST valvestrain....
I am SUPER scared of my LS7 Failing on me.....
Which Valvetrain set up should I buy? Show me the money....
I am going to get LG Super Pro's + some sort of cam
But I want the SICKEST valvestrain....
I would just grab Patriot duals. I have seen Katech go on and on about the stock rockers being fine since they have had zero failures unless yours is an 07. Personally, I would still grab aftermarket rockers myself.
Just be sure you have a sorted tune, there have been a few with piston failures that have destroyed the block.
This is advice I will be using shortly myself though I will be doing an entirly new topend.
Just be sure you have a sorted tune, there have been a few with piston failures that have destroyed the block.
This is advice I will be using shortly myself though I will be doing an entirly new topend.
TECH Apprentice
Joined: Dec 2008
Posts: 333
Likes: 0
From: Westbank of N.O.
U want reliability or do u want 7200rpm w/ hyd. roller? I have found that often they are not the same thing. The thing I see that causes the failure more often than not is the intake rocker bearing retainer. It is hardened steel, and fails spitting the needle bearings into the cankcase.(I believe it's the side-loading because it is off-set) When this happens, the rocker tries to open the valve via the retainer and not the stem, resulting in violation of the space-time continuum by the intake valve. The only shaft rocker I have tried are the crower stainless units I have run for close to 3 years now, but they have a good bit of mass and may cost a couple rpms. The failure rate of the stock rockers is low, but if u get crazy w/ the spring pressure I would worry. I think yella-terra and/or jesel has something by now.
Thread Starter
TECH Fanatic
Joined: Oct 2005
Posts: 1,698
Likes: 0
From: DFW
U want reliability or do u want 7200rpm w/ hyd. roller? I have found that often they are not the same thing. The thing I see that causes the failure more often than not is the intake rocker bearing retainer. It is hardened steel, and fails spitting the needle bearings into the cankcase.(I believe it's the side-loading because it is off-set) When this happens, the rocker tries to open the valve via the retainer and not the stem, resulting in violation of the space-time continuum by the intake valve. The only shaft rocker I have tried are the crower stainless units I have run for close to 3 years now, but they have a good bit of mass and may cost a couple rpms. The failure rate of the stock rockers is low, but if u get crazy w/ the spring pressure I would worry. I think yella-terra and/or jesel has something by now.
I would just grab Patriot duals. I have seen Katech go on and on about the stock rockers being fine since they have had zero failures unless yours is an 07. Personally, I would still grab aftermarket rockers myself.
Just be sure you have a sorted tune, there have been a few with piston failures that have destroyed the block.
This is advice I will be using shortly myself though I will be doing an entirly new topend.
Just be sure you have a sorted tune, there have been a few with piston failures that have destroyed the block.
This is advice I will be using shortly myself though I will be doing an entirly new topend.
I should have the Cam installed in the next week or so
O YA, I have never driven a C6....
I'm scared...NOT
I would just grab Patriot duals. I have seen Katech go on and on about the stock rockers being fine since they have had zero failures unless yours is an 07. Personally, I would still grab aftermarket rockers myself.
Just be sure you have a sorted tune, there have been a few with piston failures that have destroyed the block.
This is advice I will be using shortly myself though I will be doing an entirly new topend.
Just be sure you have a sorted tune, there have been a few with piston failures that have destroyed the block.
This is advice I will be using shortly myself though I will be doing an entirly new topend.
LOL> I guess I do go on and on. The question gets asked a lot so I try to answer it a lot.
Trending Topics
I thought the LS7 valves and springs were good pieces.
Also people have been racing their Vettes for years and now ZO6's come with a dry sump that hold 10 quarts of oil and it is not good enough?
Arent these engines good enough to race as they are? Maybe add headers and a slightly larger cam. 535 RWHP should suffice for most, any more power and the fun deminishes due to no traction. I had a big HP Vette and it was no fun, this 500 HP car is way more fun.
Also people have been racing their Vettes for years and now ZO6's come with a dry sump that hold 10 quarts of oil and it is not good enough?
Arent these engines good enough to race as they are? Maybe add headers and a slightly larger cam. 535 RWHP should suffice for most, any more power and the fun deminishes due to no traction. I had a big HP Vette and it was no fun, this 500 HP car is way more fun.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
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
TECH Fanatic
Joined: Jun 2002
Posts: 1,979
Likes: 3
From: Upstate NY
Sorry for making another thread but I wanted everyones mind around this subject!!!
I am SUPER scared of my LS7 Failing on me.....
Which Valvetrain set up should I buy? Show me the money....
I am going to get LG Super Pro's + some sort of cam
But I want the SICKEST valvetrain....
I am SUPER scared of my LS7 Failing on me.....
Which Valvetrain set up should I buy? Show me the money....
I am going to get LG Super Pro's + some sort of cam
But I want the SICKEST valvetrain....
However, if money isn't a concern, how about these? Thery are steel, have no bearings and the black is NOT black oxide. It's DLC.
They would probably be the single most expensive system on your engine. Under 100 gm with adjuster, so knock off about 15 gm for non-adjustable hydraulic use. Your choice of ratio, of course since they are custom for your installation.
The pic is of a LS7 installation with the center rocker the offset intake.
No, they are not Jesel, nor T&D or any other brand you would recognize. These are big-time overkill for your engine, but you asked.
Jon
__________________
If you want good lifters try the GM/Caddy lifter (claims good to 8500) - I have over 30000 miles on a set, no issues so far
Also, COMP has some new LS lifters that are better for high rpm stability, probably along the same lines as the caddy ones..
Also, COMP has some new LS lifters that are better for high rpm stability, probably along the same lines as the caddy ones..
Thread Starter
TECH Fanatic
Joined: Oct 2005
Posts: 1,698
Likes: 0
From: DFW
I, too like stock rockers, perhaps with trunnion bearing upgrades. AFAIK, there are no roller-tipped rockers that are stiffer, lighter and with less Mass Moment Of Inertia than stockers.
However, if money isn't a concern, how about these? Thery are steel, have no bearings and the black is NOT black oxide. It's DLC.
They would probably be the single most expensive system on your engine. Under 100 gm with adjuster, so knock off about 15 gm for non-adjustable hydraulic use. Your choice of ratio, of course since they are custom for your installation.
The pic is of a LS7 installation with the center rocker the offset intake.
No, they are not Jesel, nor T&D or any other brand you would recognize. These are big-time overkill for your engine, but you asked.
Jon
__________________
However, if money isn't a concern, how about these? Thery are steel, have no bearings and the black is NOT black oxide. It's DLC.
They would probably be the single most expensive system on your engine. Under 100 gm with adjuster, so knock off about 15 gm for non-adjustable hydraulic use. Your choice of ratio, of course since they are custom for your installation.
The pic is of a LS7 installation with the center rocker the offset intake.
No, they are not Jesel, nor T&D or any other brand you would recognize. These are big-time overkill for your engine, but you asked.
Jon
__________________
TECH Fanatic
Joined: Jun 2002
Posts: 1,979
Likes: 3
From: Upstate NY
Sorry for making another thread but I wanted everyones mind around this subject!!!
I am SUPER scared of my LS7 Failing on me.....
Which Valvetrain set up should I buy? Show me the money....
I am going to get LG Super Pro's + some sort of cam
But I want the SICKEST valvestrain....
I am SUPER scared of my LS7 Failing on me.....
Which Valvetrain set up should I buy? Show me the money....
I am going to get LG Super Pro's + some sort of cam
But I want the SICKEST valvestrain....
