LS1 / LS7 Lifter Differences
Thread Starter
Teching In
Joined: Apr 2012
Posts: 21
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LS1 / LS7 Lifter Differences Have an LS1 with the dreaded lifter knock after 146,000 miles. Getting ready to open ‘er up and replace the lifters with new. Everyone is telling me to go with LS7 lifters as a replacement. I’m reluctant to do this unless I have an exact knowledge of why the LS7 lifters are 100% compatible. What exactly are the design differences between the LS1 lifters and the LS7 lifters. Trying to stay stock BTW.....
TECH Addict
Joined: Mar 2013
Posts: 2,628
Likes: 30
Same lifters exact replacement, I'd probably get a set of Delphi lifters only to be sure you get OEM parts. Gotta watch sellers will advertise one thing when its another in disguise. Most all your lifters are made by the same company! Be careful who you buy from, today who knows what you are buying. Example the Melling lS lifters at Autozone and the sealed power lifters from Advance are the same lifters made in the place. Its all a lot of marketing BS.
Thread Starter
Teching In
Joined: Apr 2012
Posts: 21
Likes: 0
Sorry for my delayed response. Good advice given by you. I was wondering if there were any specific design changes between the LS1 lifters and the LS7 lifters. If no design change then why would they bother to call them "LS7 Lifters"? I really enjoy researching these things and don't want to pull the trigger on something like this unless I know EXACTLY what I am doing. So far, you've been a great help.
TECH Senior Member
Joined: Jun 2016
Posts: 22,308
Likes: 3,625
From: Central Cal.
Sorry for my delayed response. Good advice given by you. I was wondering if there were any specific design changes between the LS1 lifters and the LS7 lifters. If no design change then why would they bother to call them "LS7 Lifters"? I really enjoy researching these things and don't want to pull the trigger on something like this unless I know EXACTLY what I am doing. So far, you've been a great help.
Have an LS1 with the dreaded lifter knock after 146,000 miles. Getting ready to open ‘er up and replace the lifters with new. Everyone is telling me to go with LS7 lifters as a replacement. I’m reluctant to do this unless I have an exact knowledge of why the LS7 lifters are 100% compatible. What exactly are the design differences between the LS1 lifters and the LS7 lifters. Trying to stay stock BTW.....
Hydraulic Lifters
TECH Addict
Joined: Mar 2013
Posts: 2,628
Likes: 30
Have an LS1 with the dreaded lifter knock after 146,000 miles. Getting ready to open ‘er up and replace the lifters with new. Everyone is telling me to go with LS7 lifters as a replacement. I’m reluctant to do this unless I have an exact knowledge of why the LS7 lifters are 100% compatible. What exactly are the design differences between the LS1 lifters and the LS7 lifters. Trying to stay stock BTW.....
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