LS7 lifters
Thread Starter
Melting Slicks
Joined: Nov 2003
Posts: 3,011
Likes: 9
From: Dublin GA
LS7 lifters
Just to confirm:
The LS7 lifters DO work in the LS1, correct?
The cam builder recommended I go ahead and install lifters and mentioned the LS7's. I have seen dozens of post of guys using them, but when the website says "will not fit your application" you tend to recheck..
The LS7 lifters DO work in the LS1, correct?
The cam builder recommended I go ahead and install lifters and mentioned the LS7's. I have seen dozens of post of guys using them, but when the website says "will not fit your application" you tend to recheck..
Instructor
Joined: Dec 2009
Posts: 162
Likes: 0
From: Mesquite Tx
Just to confirm:
The LS7 lifters DO work in the LS1, correct?
The cam builder recommended I go ahead and install lifters and mentioned the LS7's. I have seen dozens of post of guys using them, but when the website says "will not fit your application" you tend to recheck..
The LS7 lifters DO work in the LS1, correct?
The cam builder recommended I go ahead and install lifters and mentioned the LS7's. I have seen dozens of post of guys using them, but when the website says "will not fit your application" you tend to recheck..
Melting Slicks
Joined: Jan 2008
Posts: 2,590
Likes: 48
From: Nathalie VA
St. Jude Donor '15-'16-'17-'18
They fit just fine, but different length push rods will most likely be needed due to the deeper cup on the LS7's.
It would probably be a good idea to go with LS2 lifter trays while your in there.
It would probably be a good idea to go with LS2 lifter trays while your in there.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
I too use the Caddy racing lifters and have ZERO issues. They have been in since 2006.
I too agree that you should replace the lifter trays, and ALSO install the new rocker truninons..
I strongly recommend that you MEASURE to make sure that you get the correct length pushrods for the proper preload!
If you have a higher mileage engine, carefully examine your CAM BEARINGS and see if they are excessively worn. If you have copper comong through Some have needed to replace theirs.
Make sure that you get the timing chain cover gasket on the correct way! If you accidently install the left side of the gasket on the right side of the block, you will have a MASSIVE oil leak!
Bill
I too agree that you should replace the lifter trays, and ALSO install the new rocker truninons..
I strongly recommend that you MEASURE to make sure that you get the correct length pushrods for the proper preload!
If you have a higher mileage engine, carefully examine your CAM BEARINGS and see if they are excessively worn. If you have copper comong through Some have needed to replace theirs.
Make sure that you get the timing chain cover gasket on the correct way! If you accidently install the left side of the gasket on the right side of the block, you will have a MASSIVE oil leak!
Bill
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Drifting
Joined: Feb 2005
Posts: 1,869
Likes: 61
From: montreal quebec
drilling lifter cups is supposed to help oil drain back but i would not bother for regular street use
Melting Slicks
Joined: Jan 2008
Posts: 2,590
Likes: 48
From: Nathalie VA
St. Jude Donor '15-'16-'17-'18
I gave bad info. The cup isn't deeper is taller by .050. In order to run the same preload as your LS1 lifters you will need a .050 shorter pushrod, but don't take my word for it take the measurement with a length checker.
Melting Slicks
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
I had read that they were the same length and I only came up with a slightly shorter pushrod on my build with milled heads. I believe it was 7.325 vs 7.350 off the top of my head which comes up to about the amount of material that was taken off of my heads.
Melting Slicks
Joined: Jan 2008
Posts: 2,590
Likes: 48
From: Nathalie VA
St. Jude Donor '15-'16-'17-'18
All in all pushrod length should be checked when ever any components are changed in the valve train. Would you risk your engine because someone "said" 2 parts are the same?
Melting Slicks
Joined: Jun 2010
Posts: 2,809
Likes: 3
From: Yorktown Virginia
Oh no I completely agree on that, its always in your best interest to double check. I was just under the impression that they were the same length.
Melting Slicks
Joined: Jan 2008
Posts: 2,590
Likes: 48
From: Nathalie VA
St. Jude Donor '15-'16-'17-'18
Race Director
Joined: Apr 2007
Posts: 11,150
Likes: 890
From: South Western Ontario
Here's some good info.
http://forums.corvetteforum.com/c5-t...ic-lifter.html
From what I can see, the "LS7" is about 1mm taller but pre-loads to about 0.5mm taller.
http://forums.corvetteforum.com/c5-t...ic-lifter.html
From what I can see, the "LS7" is about 1mm taller but pre-loads to about 0.5mm taller.