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Old 08-29-2015, 05:45 PM   #15
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U don't want the additional mass that most rockers add.

We use shaft mount adjustable rockers on our low lash solid roller stuff. Not too heavy on the valve tip, and ultra durable.
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Old 08-29-2015, 09:59 PM   #16
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Thanks for all the responses ! Appreciate it. Think I'll wait on them , as my car is a weekend toy for five months of the year. Hasn't see a track yet although I'd like to
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Old 08-29-2015, 10:52 PM   #17
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Quote:
Originally Posted by Irace16 View Post
I like the captured needle idea , but also read that there are more failures with the aftermarket trunions opposed to the stockers...that's why I worry ...spend money on a part that could fail sooner than stock. This should be easier to decide dammit
Where did you read this?
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Old 08-29-2015, 11:16 PM   #18
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I've actually seen more failed aftermarket trunions than stock.

Rough example

Gm makes 100000 rockers and have 75 fail, comp makes 1000 trunions and have 50 fail. Which one is really more problematic?

It's easy to blame gm for substandard parts but when you consider how many more parts they produce than the aftermarket, their failure rate isn't high at all.

Even on the ole ls3 oil pumps.
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Old 08-30-2015, 06:28 AM   #19
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I've seen 2-3 failed stock rocker arms, and 2-3 failed trunions. Like Rhino said, considering there are probably 200x more stock rocker arms out there, I would stick with stock.
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Old 08-30-2015, 07:52 AM   #20
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Originally Posted by LSX Camaro View Post
Where did you read this?
When I googled Trunion upgrade it came up in two or three different places
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Old 08-30-2015, 09:25 AM   #21
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One thing to keep in mind on failed trunions is the fact that the consumer has to assemble them.
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Old 08-30-2015, 10:02 AM   #22
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The trunnion upgrade is stupid easy with a small press and some snap ring pliers. Doesn't take long at all. If your car is low mileage, then maybe you could skip it, I did the first time. I put my second cam in between 80-90K miles (after collapsed lifter), so I did the trunnion upgrade then. I was like - that's it? - so easy...
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Old 08-31-2015, 09:36 AM   #23
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Originally Posted by vroomapunk View Post
There are multiple threads on this, and differing opinions. I did it, twice. Had a failure the first time, but I believe the stock rocker would have also failed.

I like the idea of it capturing the bearings in the event of a failure, others have said there isn't a big deal since the needles fall straight to the pan anyway.

Id do it again until I see a reason not to
Problem is they really don't capture the needles. My stock trunnions failed at 55K miles with 45K of that with a performance cam. 30K miles later with 10K on a new cam the Comp trunnions started failing. #2 intake both times for some reason. Both times needles went to the bottom. The comp trunnions don't keep the needles in place when the outer races fail. Waiting to see how long the new set will last.
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