LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Thoughts on LS7 lifters?

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Old Mar 25, 2019 | 09:29 AM
  #101  
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From: Jackstandican
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Originally Posted by SS RRR
You ******** have me thinking about taking off the manifold and checking them. DICKS!
So I did just this annnnnnnnnnnnnnnnnd:
Thoughts on LS7 lifters?-v5vx1do.jpg

Flaky pieces of ****. Cam was pulled and the lobes are fine. This is the worst one. All of them are doing this.
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Old Mar 25, 2019 | 10:47 AM
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Ballz. SSRR where did you buy them? I'm wondering if so called LS7 lifters are not all "LS7" and something else entirely. Hmmm. I have a set in a one season engine thats getting torn down soon so I'll be able to contribute some feedback. These were Summit house brand LS7's
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Old Mar 25, 2019 | 11:35 AM
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Enough to scare me away, im using comp 850s right now on a 6200rpm 215/224 .533 lift cam right now.
Im thinking Morel or Johnson lifters on my next build that will be more aggressive.
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Old Mar 25, 2019 | 02:03 PM
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I got mine from summit about four years ago.
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Old Mar 25, 2019 | 03:36 PM
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Ha, ******* dick
Hate being right.
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Old Mar 25, 2019 | 05:09 PM
  #106  
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lulz. i know you say that with all the love in the world!
and i NEVER argued you were wrong! i just wanted more proof. this thread convinced me i should look at them, and i have you and others to thank for that!
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Old Mar 26, 2019 | 08:11 AM
  #107  
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damn thats ******. I'd be pissed
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Old Mar 26, 2019 | 08:48 AM
  #108  
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I just thank God I caught it when I did, or it could've been a **** ton worse.
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Old Mar 26, 2019 | 09:56 AM
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SSRRR That is exactly what happened to my LS7 lifters. They were Crowers. Its why I spent the coin to get the correct LT1 lifters via the LT1 part #

Thoughts on LS7 lifters?-c1fxmcdl.jpg
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Old Mar 26, 2019 | 11:24 AM
  #110  
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**** it. I am about a **** hair away from cleaning up the Comp R's and using them.

Oh, and I ordered Lunati lifters a few weeks back. Any fucky stories about them? The lifter bodys look identical to the LS7's- p/n 72910-16

Last edited by SS RRR; Mar 26, 2019 at 11:36 AM.
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Old Mar 26, 2019 | 12:07 PM
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Should have gotten morels
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Old Mar 26, 2019 | 04:29 PM
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Originally Posted by Shownomercy
Should have gotten morels
x2 unless those Lunatis happen to be Morels. I forget the details but Morel might make some or all of the Lunati lifters or vice verse or some **** like that. Morel 5315 is a nice inexpensive drop in option.

Just a heads up SSS RR but you may already know this.. the LS7s like more preload than the aftermarket stuff and the pushrod cups are different between a lot of them so your pushrod lengths may change. I needed to change pushrod lengths when going from GM lifters to both Morels and Johnsons on my LS stuff.

Last edited by StealthFormula; Mar 27, 2019 at 07:22 AM.
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Old Mar 27, 2019 | 04:34 AM
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Originally Posted by SS RRR
I got mine from summit about four years ago.

Doh! Double *****, ratfarts, and damn. Oh well I'll be checking them out

Its gotta be supplier issues. On the OEM LS7's I have run they have been through HELL and never a blip
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Old Mar 27, 2019 | 06:29 AM
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So moral of the story? Ls7 lifters are a viable replacement as long as they are real ls1 lifters? Alot was said in this thread. I'm left with more questions
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Old Mar 27, 2019 | 09:49 AM
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From: Jackstandican
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Originally Posted by StealthFormula
x2 unless those Lunatis happen to be Morels. I forget the details but Morel might make some or all of the Lunati lifters or vice verse or some **** like that. Morel 5315 is a nice inexpensive drop in option.

Just a heads up SSS RR but you may already know this.. the LS7s like more preload than the aftermarket stuff and the pushrod cups are different between a lot of them so your pushrod lengths may change. I needed to change pushrod lengths when going from GM lifters to both Morels and Johnsons on my LS stuff.
Understood. Just talked to a rep from Johnson who said the same thing. In my limited research there were only a few lunati lifters made by morel, however the Lunatis I have are pretty much the same price as the 5315's. I can't find anything good/bad or indifferent (ie JACK SQUAT) about the 72910's.
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Old Mar 27, 2019 | 10:00 AM
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Crower link bars yo
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Old Mar 27, 2019 | 10:16 AM
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Originally Posted by SS RRR
Understood. Just talked to a rep from Johnson who said the same thing. In my limited research there were only a few lunati lifters made by morel, however the Lunatis I have are pretty much the same price as the 5315's. I can't find anything good/bad or indifferent (ie JACK SQUAT) about the 72910's.
I wouldn't be surprised if they are just reboxed Morel 5315s but either way I vote to run the bastards.
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Old Mar 27, 2019 | 12:58 PM
  #118  
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Originally Posted by StealthFormula
I wouldn't be surprised if they are just reboxed Morel 5315s but either way I vote to run the bastards.
Probably will end up doing this.
Originally Posted by Shownomercy
Crower link bars yo
I'm not listening to you, LA LA LA LA LA LA!

Originally Posted by Bengtson95
So moral of the story? Ls7 lifters are a viable replacement as long as they are real ls1 lifters? Alot was said in this thread. I'm left with more questions
What I have found in the LS world is many are poo poo'ing on the LS7 lifters. Don't run them.
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Old Mar 27, 2019 | 06:55 PM
  #119  
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I wouldn't be surprised if they started cutting costs and made these lifters cheaper over the years. I just had mine out a week or so ago when I did new valve springs and thankfully they all looked fine.
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Old Apr 28, 2023 | 11:01 PM
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Originally Posted by 350 groundpounder
Im thinking Morel or Johnson lifters on my next build that will be more aggressive.
I decided to go with Johnsons a few years ago. Took the intake off tonight and looked at four different lifters. They were all in pristine condition.
**** those flakey piece of CHI-NA sacks of ****.

The dimples on the roller is oil coating. These things looked brand new.
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