Installing rockers
Thread Starter
Joined: Jun 2013
Posts: 1,667
Likes: 22
From: Cincinnati, OH
Installing rockers I'm looking to install some rockers and I was curious if there is anything special I need to do..
I'm just replacing my stock rockers with another set of stock rockers that has the trunion upgrade done to them already...
no fancy shmancy billet jewels or anything of that sort.
I'm just replacing my stock rockers with another set of stock rockers that has the trunion upgrade done to them already...
no fancy shmancy billet jewels or anything of that sort.
Launching!
Joined: Apr 2015
Posts: 257
Likes: 1
There are a number of ways to do it:
You can just unbolt them one at a time and reinstall the new one. That's probably not the best because there is a possibility that you can strip the threads on a rocker bolt when a valve is wide open and there is a lot of tension on the bolt.
Another way is to use EO/IC method. When the exhaust valve starts to open, the intake valve is closed. The lifter is on the base circle of the cam at that point and you can do the intake rocker. Turn the engine by hand and watch for the intake valve to open. At that point you can do the exhaust valve.
A third method is to watch for the intake valve to close and then turn the engine about a third of a revolution more. Both valves will be closed and you can do both intake and exhaust on that cylinder. LS1 firing order is 1, 8, 7, 2, 6, 5, 4, 3. If you start at #1, turn the engine 90 degrees and do #8. Then turn the engine another 90 degrees and do # 7. Keep up in firing order until you've done all eight cylinders.
You don't have to be exact with this because all you're doing is swapping out rocker arms. If a valve is part way open, there is little chance of damaging anything.
You can just unbolt them one at a time and reinstall the new one. That's probably not the best because there is a possibility that you can strip the threads on a rocker bolt when a valve is wide open and there is a lot of tension on the bolt.
Another way is to use EO/IC method. When the exhaust valve starts to open, the intake valve is closed. The lifter is on the base circle of the cam at that point and you can do the intake rocker. Turn the engine by hand and watch for the intake valve to open. At that point you can do the exhaust valve.
A third method is to watch for the intake valve to close and then turn the engine about a third of a revolution more. Both valves will be closed and you can do both intake and exhaust on that cylinder. LS1 firing order is 1, 8, 7, 2, 6, 5, 4, 3. If you start at #1, turn the engine 90 degrees and do #8. Then turn the engine another 90 degrees and do # 7. Keep up in firing order until you've done all eight cylinders.
You don't have to be exact with this because all you're doing is swapping out rocker arms. If a valve is part way open, there is little chance of damaging anything.
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12 Second Club
Joined: Sep 2005
Posts: 4,273
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From: Bucks County, Pa.
There are a number of ways to do it:
You can just unbolt them one at a time and reinstall the new one. That's probably not the best because there is a possibility that you can strip the threads on a rocker bolt when a valve is wide open and there is a lot of tension on the bolt.
You can just unbolt them one at a time and reinstall the new one. That's probably not the best because there is a possibility that you can strip the threads on a rocker bolt when a valve is wide open and there is a lot of tension on the bolt.