Lifter
Thread Starter
Pro
Joined: Dec 2017
Posts: 572
Likes: 28
From: Volo, Illinois
Lifter
I am doing following Mods to my 97 C5 Automatic w/94k miles : BTR stage 2 cam kit, LS intake manifold, 243cylinder heads, melling high volume oil pump, speed engineering( se on back order till 6/18) or TSP long tube headers, Summmit racing harmonic balancer, OEM timing chain & damper, rocker trunnion upgrade.
Is LS7 good upgrade? Will this work with my btr stage 2 cam 227/238 .620"/.605" ???
Is there failure to LS7 anyone know I should stay away from?
I spoke to my long time high school acquaintance he has a c6 vette told me lifter failed on his c6.
what trunion upgrade would you recommend? i'm looking into straub technologies or Comp Cams trunion kit 13702kit from summit.
what else should I replace while i'm in there?
ANYONE SELLING HEADERS? LET ME KNOW WHAT YOU GOT.
Is LS7 good upgrade? Will this work with my btr stage 2 cam 227/238 .620"/.605" ???
Is there failure to LS7 anyone know I should stay away from?
I spoke to my long time high school acquaintance he has a c6 vette told me lifter failed on his c6.
what trunion upgrade would you recommend? i'm looking into straub technologies or Comp Cams trunion kit 13702kit from summit.
what else should I replace while i'm in there?
ANYONE SELLING HEADERS? LET ME KNOW WHAT YOU GOT.
Melting Slicks
Joined: Dec 2004
Posts: 2,645
Likes: 629
From: Dallas TX
"ls7" lifters are basically the standard LS lifter thats out now. Nothing fancy about them, just regarded as the "latest" revision to the LS lifter family. They arent great, but arent terrible. Stepping up to something like a Johnson lifter is at least double what a set of GM lifters cost. DEFINITELY do some kind of lifters when you do your cam especially at 94k miles.
CHE trunnion kit or another brass bushing kit. Comp trunion kit is no better than what you have. Get the needle bearings out. Im putting a CHE kit in my 02 Z while I am doing the valve springs.
CHE trunnion kit or another brass bushing kit. Comp trunion kit is no better than what you have. Get the needle bearings out. Im putting a CHE kit in my 02 Z while I am doing the valve springs.
Thread Starter
Pro
Joined: Dec 2017
Posts: 572
Likes: 28
From: Volo, Illinois
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Joined: Apr 2013
Posts: 5,010
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From: Oregon
St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23
https://www.corvetteforum.com/forums...-no-equal.html
this set has the gears as well and I used this also
https://briantooleyracing.com/rde-ti...rde-62188.html
this set has the gears as well and I used this also
https://briantooleyracing.com/rde-ti...rde-62188.html
Thread Starter
Pro
Joined: Dec 2017
Posts: 572
Likes: 28
From: Volo, Illinois
https://www.corvetteforum.com/forums...-no-equal.html
this set has the gears as well and I used this also
https://briantooleyracing.com/rde-ti...rde-62188.html
this set has the gears as well and I used this also
https://briantooleyracing.com/rde-ti...rde-62188.html
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From: Oregon
St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23
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NEVER install old gears with a new chain, and/or NEVER install an old chain with new gears.
On ANYTHING!!!! They wear TOGETHER. Install ALL 3 as a new set, if replacing any one of them. I also believe in never mixing up rocker arms, and then re-installing them on the wrong, worn valvestems. They wear uniquely to each valvestem, and should be replaced on that same stem, and pushrod, that they were removed from. This isn't really as necessary with roller rockers.......
Last edited by grinder11; Apr 20, 2021 at 05:51 PM.
Thread Starter
Pro
Joined: Dec 2017
Posts: 572
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From: Volo, Illinois
ALWAYS install new gears with a new chain, and/or ALWAYS install a new chain with new gears!!
NEVER install old gears with a new chain, and/or NEVER install an old chain with new gears.
On ANYTHING!!!! They wear TOGETHER. Install ALL 3 as a new set, if replacing any one of them. I also believe in never mixing up rocker arms, and then re-installing them on the wrong, worn valvestems. They wear uniquely to each valvestem, and should be replaced on that same stem, and pushrod, that they were removed from. This isn't really as necessary with roller rockers.......
NEVER install old gears with a new chain, and/or NEVER install an old chain with new gears.
On ANYTHING!!!! They wear TOGETHER. Install ALL 3 as a new set, if replacing any one of them. I also believe in never mixing up rocker arms, and then re-installing them on the wrong, worn valvestems. They wear uniquely to each valvestem, and should be replaced on that same stem, and pushrod, that they were removed from. This isn't really as necessary with roller rockers.......
Thread Starter
Pro
Joined: Dec 2017
Posts: 572
Likes: 28
From: Volo, Illinois
Thread Starter
Pro
Joined: Dec 2017
Posts: 572
Likes: 28
From: Volo, Illinois
Pro
Joined: Dec 2015
Posts: 660
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From: Knoxville TN
I’m still running the original oil pump, sbe ls6, makes 500+ n/a, 600+ on spray, turns 7800 rpms and has hundreds of 1/8 mile passes, no need for aftermarket pump and if you do go aftermarket then don’t do high volume cause you risk sucking the pan dry
Melting Slicks
Joined: Dec 2004
Posts: 2,645
Likes: 629
From: Dallas TX
I"m using the 243 heads off 02 i purchased and the rockers were already taken off from the heads when I received the heads so I don't know which rocker goes to whichocatipn on the heads. The heads got 35k miles. I am going to use this rocker on the heads. Is it ok to reuse the rockers since I don't know which rocker came off from the heads a d it's not going to be on the same spot it was on before? Will have new pushrods and new valve springs came with btr stage 2 cam kit. I'm not going to upgrade the trunion on the rockers, just going to use rockers came w/243 heads what I'm thinlg.
In an LS7 build I did I sent my rockers out to CHE to have them install their trunnion kit(at the time thats the only way you could do it). No clue which ones went where when I re-assembled the heads.
Im CURRENTLY(my car is torn apart) doing CHE trunnions on my 02 Z06... I did not keep track of which rocker was on which valve... I expect zero issues. I didnt see anything out of the ordinary when I took everything apart.
Race Director
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Anyway, go ahead and use the rockers you have. Just look them over good, and make sure none have excessive wear on the tip. Like if there's an obvious wear mark that you can catch with your fingernail. Do your best to ensure all the needle bearings are in there. I don't know how many there are supposed to be, but you can "pinch" the fulcrum/trunnion between your thumb and forefinger, and move it around, up and down, like the cam/pushrod does. If any have too much play, and feel loose, or bind, something is wrong. Do you know the history of the rockers?Last edited by grinder11; Apr 21, 2021 at 06:57 PM.
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Joined: Apr 2013
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From: Oregon
St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23
I also used the Straub bushing kit, I hear CHE also has a good kit I would not use the Comp kit with the bearings in them. I have set of those NIB collecting dust for a good reason. I also went with the Johnson tie-bar lifters
Last edited by Smoken1; Apr 21, 2021 at 07:38 PM.
Burning Brakes
Joined: Feb 2019
Posts: 1,028
Likes: 377
From: SW Ohio
I used the straub trunnion kit and morel 6504 lifters and had great results - I would use those parts again, aside from using a set of tie-bar lifters if I were building a car to put on a road course more often than once or twice a year.
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2020 Corvette of the Year Finalist (performance mods)
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straub is better than comp but those brass bushings are a wear item, they can be replaced but a full set is a fraction of what the kit cost... I had my rockers off awhile back and they had more play than I liked and after removing the trunnions the wear was evident on the bushings... the trunnions were fine though unlike my old comps that got trashed but I decided to go with che on reinstall and see how those work out
Burning Brakes
Joined: Feb 2019
Posts: 1,028
Likes: 377
From: SW Ohio
straub is better than comp but those brass bushings are a wear item, they can be replaced but a full set is a fraction of what the kit cost... I had my rockers off awhile back and they had more play than I liked and after removing the trunnions the wear was evident on the bushings... the trunnions were fine though unlike my old comps that got trashed but I decided to go with che on reinstall and see how those work out