Lifter difference?
Thread Starter
Racer
Joined: Jan 2011
Posts: 275
Likes: 2
From: Tucson Arizona
Lifter difference?
So I had to replace one of my lifters after the roller shaft came loose and gouged the lifter bore. I have two sets from my engine and another LS-1 that I picked up.
There are some design differences. Nothing that appears important but I wonder what might be the difference. I asked if someone knew the difference between LS-1 and LS-7 that so many people swear by.
There are some design differences. Nothing that appears important but I wonder what might be the difference. I asked if someone knew the difference between LS-1 and LS-7 that so many people swear by.
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
There is no swearing by the LS7 lifter. It is the only lifter you can get now and be OEM. The LS7 lifter is the stock replacement for the LS1. Over on tech they are saying over and over that .050 shorter pushrods are needed with the new version though.
Safety Car
Joined: Aug 2011
Posts: 4,439
Likes: 405
From: Portland OR
I just installed LS7 lifters in my project. There is no difference in any dimension from my original 2000 LS-1 lifters.
They even look identical.
Not to say GM didn't make some changes, but since the LS7 superceeds all previous part numbers, my inclination is to believe the dimensions are the same. They are in my case.
They even look identical.
Not to say GM didn't make some changes, but since the LS7 superceeds all previous part numbers, my inclination is to believe the dimensions are the same. They are in my case.
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
I just installed LS7 lifters in my project. There is no difference in any dimension from my original 2000 LS-1 lifters.
They even look identical.
Not to say GM didn't make some changes, but since the LS7 superceeds all previous part numbers, my inclination is to believe the dimensions are the same. They are in my case.
They even look identical.
Not to say GM didn't make some changes, but since the LS7 superceeds all previous part numbers, my inclination is to believe the dimensions are the same. They are in my case.
there are some pictures floating around of the cup of a LS1 and LS7 lifter that show the LS7 lifter cup is in a different position than the LS1.
Le Mans Master
Joined: Mar 2002
Posts: 5,955
Likes: 161
From: PNW
This comes up all the time on LS1Tech. Conclusion is there's no difference that would warrant any different length pushrod. The LS7 lifter is the only lifter you can buy as OEM replacement from GM for the LS1/LS6 ... so GM is saying it's a drop in replacement.
