INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

change lifters?

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Old Apr 26, 2009 | 02:42 AM
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i have noticed a lot of the f-body guys switch to ls7 lifters and ls2 lifter trays when doing a head/cam swap, what is the advantage of doing this? how would switching from stock lifters to ls7 lifters affect pushrod length? thanks
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Old Apr 26, 2009 | 09:05 AM
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Good queston, I would like to know too since my heads are off and ls7 lifters are only $120.
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Old Apr 26, 2009 | 10:50 AM
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i think they were saying lifter trays are like $32 so if its worth $150 i'll do it with my heads/cam swap
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Old Apr 26, 2009 | 11:19 AM
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Direct swap, same size/length... Just allows higher RPM without worrying about lifters collapsing or becoming unstable... The CTS-V lifters are also a nice upgrade.
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Old Apr 26, 2009 | 11:29 AM
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the ls7 lifter has replaced all other lifters for the gen3+. So if you go to the dealership and order lifters for your truck, they will give you the same lifters as the ls7. If you don't plan on spinning it to 7k, I would just reuse the stockers.
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Old Apr 26, 2009 | 11:38 AM
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so on a 2008 5.3 DOD engine if i wanted to replace the DOD collapesable lifters i would just need to go buy half of a set of stock lifter and that would be all i needed since the non collapsable lifters are the ls7 lifters. Are the ls7 lifters the same as the cts- v lifters
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Old Apr 26, 2009 | 11:46 AM
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Originally Posted by silver-mod-o
Direct swap, same size/length... Just allows higher RPM without worrying about lifters collapsing or becoming unstable... The CTS-V lifters are also a nice upgrade.
ok, thanks for clearing that up for me

Originally Posted by built408
the ls7 lifter has replaced all other lifters for the gen3+. So if you go to the dealership and order lifters for your truck, they will give you the same lifters as the ls7. If you don't plan on spinning it to 7k, I would just reuse the stockers.
would you reuse the stock lifters on an engine with 153K on it? i'd like to turn 6500 or 6600 but i dont know what yellow ls6 springs can handle or if i want to take that high mileage short block up that high
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Old Apr 27, 2009 | 12:09 AM
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with that amount of miles and what youre planning I'd throw some new stockers in there and keep rolling...
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Old Apr 27, 2009 | 12:02 PM
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with 153k miles i'd definitely change the lifters
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Old Apr 27, 2009 | 01:08 PM
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I would change them, especially since they are only 120 bucks.
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