Lifter replacement help?
Thread Starter
Racer
Joined: Jun 2010
Posts: 360
Likes: 0
From: Chicago Illinois
Lifter replacement help?
I'm going to be swapping my stock ls6 lifters for ls7 lifters because one or more is definitely broken. I'm not quite sure exactly what I need to replace other than the lifters when I do this. Can someone recommend things to be replaced such as head gaskets or head bolts. I'm not sure if it's a necessity to replace these
Thread Starter
Racer
Joined: Jun 2010
Posts: 360
Likes: 0
From: Chicago Illinois
I'm not 100% sure but i checked my valve springs and rockers and they looked fine. A local shop who has corvette experience told me that they were positive it was a broken lifter. I have another thread floating on the tech page about a random misfire which is due to this noise that appeared right when the loud ticking did
Melting Slicks
Joined: Apr 2007
Posts: 2,787
Likes: 22
From: Lititz PA
Depending on what's "broken" on the lifter(s) you might end up purchasing a new cam too.
Do yourself a favor and get a set of ARP head studs & thread chaser while you're at it. Clean the bolt holes out, put the studs in, and never worry about them again.
PN: 234-4316 for pre-2004 blocks.
Do yourself a favor and get a set of ARP head studs & thread chaser while you're at it. Clean the bolt holes out, put the studs in, and never worry about them again.
PN: 234-4316 for pre-2004 blocks.
Last edited by YeloFevr; Sep 27, 2010 at 08:01 PM.
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Unless its a daily driver, I would disassemble and inspect before buying too many parts. If a lifter is "broken" chances are there are other issues within the block and the question would be can the engine be saved.
Just out of curiosity, if this is a stock motor have you checked for bent pushrods?
Just out of curiosity, if this is a stock motor have you checked for bent pushrods?
Last edited by vettenuts; Sep 27, 2010 at 09:19 PM.
Safety Car
Joined: Jul 2004
Posts: 3,904
Likes: 28
From: Vancouver Washington
Unless its a daily driver, I would disassemble and inspect before buying too many parts. If a lifter is "broken" chances are there are other issues within the block and the question would be can the engine be saved.
Just out of curiosity, if this is a stock motor have you checked for bent pushrods?
Just out of curiosity, if this is a stock motor have you checked for bent pushrods?
I just finished dealing with a broken lifter. We salvaged the valve covers, pan, and end plates. 
Tech Contributor
Joined: May 2008
Posts: 2,843
Likes: 16
From: Howell Michigan
St. Jude Donor '09-'10-'11
If you have a broken lifter most likely you will need a cam too. As vettenuts suggested, you need to check push rods first. These are items that can be accessed by pulling the valve covers only.
Check the coils and spark plug wires the very first thing. I had a customer come in that swore his engine had a bad spring, rocker or lifter because of the tick-tick noise. I found that the spark plug wire at the coil pack was not on and the coil was arcing to the plug wire making the noise. Putting the wire back on fixed the miss and the noise.
If you end up with needing lifters, keep in mind that you should not spend extra for "LS7" lifters. All LSx use the same lifters now and they are all the same as what the LS7 uses. Just order new lifters and you will have the best without any undue added cost.
I would also suggest you get a service manual before doing any of the work.
Check the coils and spark plug wires the very first thing. I had a customer come in that swore his engine had a bad spring, rocker or lifter because of the tick-tick noise. I found that the spark plug wire at the coil pack was not on and the coil was arcing to the plug wire making the noise. Putting the wire back on fixed the miss and the noise.
If you end up with needing lifters, keep in mind that you should not spend extra for "LS7" lifters. All LSx use the same lifters now and they are all the same as what the LS7 uses. Just order new lifters and you will have the best without any undue added cost.
I would also suggest you get a service manual before doing any of the work.
Last edited by Eric D; Sep 28, 2010 at 08:19 AM.
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Thread Starter
Racer
Joined: Jun 2010
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From: Chicago Illinois
Thread Starter
Racer
Joined: Jun 2010
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From: Chicago Illinois
Safety Car
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From: Vancouver Washington
Racer
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From: Beckley WV
Thread Starter
Racer
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From: Chicago Illinois
Racer
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