Engine tech inc Rockers
Thread Starter
Staging Lane
Joined: Apr 2018
Posts: 64
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Engine tech inc Rockers Hey guys, has anyone had any luck with the engine tech factory replacement ls3 rockers? They are being sold with what looks like a comp cam trunion upgrade. I am just worried that if I buy this first my cast iron 6.2, that they will break on me. My cam I'm using has 629 max lift. Anyone know if these are made in China? If so, factory replacements are due...
thanks guys, any feedback would be appreciated greatly
thanks guys, any feedback would be appreciated greatly
Last edited by KCS; Dec 17, 2018 at 06:39 PM. Reason: Non Sponsor Link Removed
TECH Senior Member
Joined: Jun 2016
Posts: 22,308
Likes: 3,625
From: Central Cal.
What's wrong with your rocker arms? Also, if the Comp trunnion upgrade is the needle bearing type, you do not want it. The trunnions are too soft, and the needle bearing eat into the trunnion. within 5k miles
Thread Starter
Staging Lane
Joined: Apr 2018
Posts: 64
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I'm upgrading from my 5.3l gen iv engine to a cast iron 6.2 I've built, I never had offset rockers. Good info on the trunion upgrade. Appreciate that.
TECH Senior Member
Joined: Jun 2016
Posts: 22,308
Likes: 3,625
From: Central Cal.
Which heads are you using? The only offset ones are the intakes, and the part shown does not differentiate which rocker it is. Personally I would be suspicious. The valvetrain is where you do NOT want to cut corners.
Thread Starter
Staging Lane
Joined: Apr 2018
Posts: 64
Likes: 0
I'm using ls3 heads, i know they are offset on the intake side however I'm selling my 5.3 complete therefore I dont want to use 8 of the exhaust rockers. They sell these rockers in a kit, I was just showing you an example pic of 1 they sell. I just dont want them to be like Michigan motorsports rockers from Chins. Was asking if anyone had any experience with engine tech inc rockers, that's all. Thanks for your help
I have a set of factory ls3 rockers with stands. I can order and install a better trunion setup if interested.
I also have some comp 1.8 ls3 roller rockers i need to get rid of. All my stuff is cathedral setup. I have no need for the ls3 stuff.
If interested PM me.
I also have some comp 1.8 ls3 roller rockers i need to get rid of. All my stuff is cathedral setup. I have no need for the ls3 stuff.
If interested PM me.
That sounds like a plan
OP if you want to upgrade trunions go with the bushing style
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I would stay away from factory rockers with more than .600” lift. Seen the LS3 intakes get trashed and tear up the valve tips in 3-5 thousand miles. The scrubbing nature just runs out of geometry past the 600 mark Tooley brought this to light Buncha years ago
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Verdad Gallardo TECH Senior Member
Joined: Jun 2016
Posts: 22,308
Likes: 3,625
From: Central Cal.
A good set of roller-tipped rockers gets the job done here. Check TSP for theirs...