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THE answer to your ls7 lifter woes.

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Old Mar 22, 2014 | 09:45 AM
  #41  
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Seems that people are also VERY sceptical of boxed parts. Assuming there are only a few manufacturers world wide and dozens of packaging companies, today's consumers want to know the intricate details of WHY is something better or more expensive. In many cases it's difficult to SEE the difference by visual inspection...which is why testimonials are all the rage as people are always looking for the super dooper; lots more good'r company to hitch their wagon to.
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Old Apr 22, 2014 | 11:29 PM
  #42  
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IF you are looking for the Morel Drop ins, we just introduced 5 sets into our LS7 lifter GP.

https://ls1tech.com/forums/sponsor-g...l#post18108450

there is the link. go get em!!
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Old Apr 23, 2014 | 12:01 AM
  #43  
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Originally Posted by coSPEED2
Well that is not entirely right. There have been failures before and usually for above 6500 or aggressive lobes or a good amount of seat pressure, we recommend a different lifter.
I'm just curious as to why ls7 lifters are rated for less rpm than the stock motor from which they are based? doesn't the ls7 rev to 7k stock?
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Old Apr 23, 2014 | 12:07 AM
  #44  
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It can go there yes. We dont recommend them that high for many reasons.
The LS7 (per gm) makes peak power at 6300 rpm on their SAE rated dyno. And they use lighter valves including the ti intake valve. That helps out quite a bit. If someone is going to go there often on the strip, we would rather recommend a higher quality lifter for that range as they wont be disappointed.
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Old Apr 23, 2014 | 12:24 AM
  #45  
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Originally Posted by coSPEED2
It can go there yes. We dont recommend them that high for many reasons.
The LS7 (per gm) makes peak power at 6300 rpm on their SAE rated dyno. And they use lighter valves including the ti intake valve. That helps out quite a bit. If someone is going to go there often on the strip, we would rather recommend a higher quality lifter for that range as they wont be disappointed.
That right there is a very good point. That's also the reason they can run the cam profile they do.
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Old Apr 23, 2014 | 12:27 AM
  #46  
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^ Thanks!

Also using higher spring pressures and newer and more aggressive cam profiles would likely make you want a higher quality lifter with better internals and even maybe a larger dia roller.
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Old Apr 23, 2014 | 09:37 PM
  #47  
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Originally Posted by coSPEED2
It can go there yes. We dont recommend them that high for many reasons.
The LS7 (per gm) makes peak power at 6300 rpm on their SAE rated dyno. And they use lighter valves including the ti intake valve. That helps out quite a bit. If someone is going to go there often on the strip, we would rather recommend a higher quality lifter for that range as they wont be disappointed.
that makes me want to have my rev limit set to 6500 now... i'm usung ls7 lifters on my motor with the limit at 67-6800
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Old Apr 23, 2014 | 09:44 PM
  #48  
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Well it really depends on the valves, springs, and the cam profile.
That cam seems a tad big for your setup really.
The max rpm you rev your engine should be based off of gear ratio in the trans and rear, and peak hp of your setup.
We do not recommend them above that.
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Old Apr 23, 2014 | 10:18 PM
  #49  
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Originally Posted by Goosecaddy05
that makes me want to have my rev limit set to 6500 now... i'm usung ls7 lifters on my motor with the limit at 67-6800
You can also do some searches. There are many discussions on this. It will give you an idea of what others are doing with those lifters.
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Old Apr 23, 2014 | 11:50 PM
  #50  
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Originally Posted by coSPEED2
Well it really depends on the valves, springs, and the cam profile.
That cam seems a tad big for your setup really.
The max rpm you rev your engine should be based off of gear ratio in the trans and rear, and peak hp of your setup.
We do not recommend them above that.
Martin at tick performance specified the cam for me... my gear ratios are 2.97, 2.07, 1.43, 1, .85, .56, with a 3.73 dif... hp peaks at 5900 and stays flat till 6500 then falls off till redline at 6700... has 400 tq at 3k then peaks at 4.4k at 468 and stays flat til 5.4k then starts dropping off... drrives smooth with very little surge... i can even cruise through parking garages in first at 1200 with no prob ((while setting off everyone's car alarms))
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Old Apr 23, 2014 | 11:57 PM
  #51  
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the springs are the PRC .675 ones i think they are Manley 2.12 intake and Ferrea 1.6 exhaust valves
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Old Apr 24, 2014 | 12:07 AM
  #52  
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AFR set to 11.9 from 2k til redline at WOT
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Old Apr 24, 2014 | 02:14 PM
  #53  
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I would recommend not using the LS7s then. We do have the Morels on that GP for $165. Once they are gone, they are gone.
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