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Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

Rocker upgrade?

   
Old Jul 24, 2019 | 10:41 AM
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Default Rocker upgrade?
I am planning out an LS3 build and will most likely be using the Cam Motion Titan 3 cam. It is advertised as having .621 intake and .604 exhaust. Will the stock LS3 rockers work with this or should I go with full roller rockers?
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Old Jul 24, 2019 | 12:11 PM
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Everything i've read says stock rockers are good under .630 lift. Just do the trunion upgrade on them. I'm using stock rockers with trunion bearing on mine with a .627 lift and haven't had any issues.
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Old Jul 24, 2019 | 12:32 PM
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I prefer using roller rockers.
They are stronger and can handle more lift.
Plus they free up some HP too due to reduced friction.
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Old Jul 25, 2019 | 09:19 AM
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It gets pretty sketchy at .630” but it looks doable. It helps if you can mill the rocker stands a lttle to lower the rockers, but I think .620” would be okay.
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Old Jul 25, 2019 | 09:49 AM
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For whatever it's worth, I've been using stock rockers on my ls1 with trunion upgrade, spinning to 6900 rpm on a .629 (15,000 miles now)
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Old Jul 25, 2019 | 12:02 PM
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I was going to use a set of OEM LS3 rockers and upgrade the trunnions with the CHE bearing ones. I already have the rockers but wasn’t sure if it would hold up.
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Old Jul 25, 2019 | 12:36 PM
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My LS3 with stock rockers and trunion upgrade see 7650 with .646 lift on the intake side. I have a about 6000 miles on it so far. I have drove it on a few decent trips 400 miles each way and had zero issues.
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Old Jul 25, 2019 | 03:38 PM
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I'm at 9K miles on LS7 rockers with the CHE Trunion Kit, .648" lift cam and BTR .660" Springs.

I probably should check my valve tip wear, especially on the exhaust side since it doesn't have lash caps on those. On the intake side it at least has a lash cap that will allow more "sweep" than the smaller diameter tip of the exhaust valve.
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