Lifters

im new to internals so...bear with me.

im about 75% sure my lifters are i need of replacing.
i had a friend of my dads check it out and he said that its most likely a lifter. my dad and a few guys here on LS1 agree but next week (hopefully) i can get it into a shop and get a professional opinion.

i figure that i might as well get a performance upgrade out of my bad luck
now my question is this...
is there anything i should go ahead and do/replace since im having the lifters replaced?
and what kind of lifters should i get?

(for refernce purposes)---> all i (will) have is LTs ORY and LMII exhaust.

so what makes you think your lifters need to be replaced? Noise issue? What kind of noise?

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Originally Posted by Demon_Z28

so what makes you think your lifters need to be replaced? Noise issue? What kind of noise?

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That is my first question.
Normally these lifters last forever. Unless given a reason to fail.


That said....most use LS7 lifters.
I went with Morels.

http://www.ls1.com/forums/showthread.php?t=147978

heres the thread of my issue.

Since your not going with a huge cam, I'd just drop a set of ls7 lifters in it. They don't make the ls1 lifters anymore...the ls7 lifters replaced the ls1s. They are built alittle more stout and holdup a lot better than the old stock ones.

You have to pull the heads off to change lifters so depending on what kind of money you want to spend, now would be a good time to do a head swap. If you are on a tight budget atleast get some milled off the heads to bump your compression up some (.030-.040") and a good valve job.

Spend the money and get the ARP head bolts...the stock bolts can only be used once where the ARPs can be used over and over again and you will be kicking yourself if you get stock bolt and pull the heads off again later.
Also the ls7 lifters are a hair taller and if you mill the heads you will NEED to check pushrod lenght.

And last, do yourself a favor and drop a set of comp 918 springs or better in so if you over rev you won't get valve float.

Hope I helped!

Oh yes sorry, i have read your thread briefly. What I have heard of the LS1 lifters vs. LS7 lifters are they are pretty identical but the LS7 lifters are better because the casting was different in the process of making them.

well what if i plan to drop a 402 or 408 stroker in this?

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Originally Posted by BashamWS6

well what if i plan to drop a 402 or 408 stroker in this?

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LS7 lifters would be just fine. That's what I'd get if I were going to replace mine anyways. If that is what your asking.

@Demon yup thats what i was asking...any modifcation needed? or is that if got heads too?

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Originally Posted by Mr. Luos

That is my first question.
Normally these lifters last forever. Unless given a reason to fail.


That said....most use LS7 lifters.
I went with Morels.

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any particular reason u went Morels?

Just guessing but probably because of his cam and because Morels are pretty kick-ass lifters :)

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Originally Posted by BashamWS6

any particular reason u went Morels?

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To handle ANYTHING I could throw at them....

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Originally Posted by 35th-ANV-SS

Just guessing but probably because of his cam and because Morels are pretty kick-ass lifters :)

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Agreed, I didn't have money to get upgraded Lifters and just stuck with my factory ones when I did my head swap. I would have went with Morels brand LS7 Lifters as well.

And no modifications would be needed to run LS7 lifters, they are drop in replacements.

and where can i purchase these fabulous lifters at?

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Originally Posted by BashamWS6

and where can i purchase these fabulous lifters at?

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I would check with site sponsors first, but Thunder Racing has them.