Bad_AX

Did anyone go to SEMA and check out these new Comp Cams Radius Tip rocker arms for the LS1 and LS3? They are said to reduce sweep across the valve tip by as much as 400%. They are also reported to have a 1.77 straight ratio, and they are available with either needle bearing or bushing trunions. It would be nice if they bring out a version for the LS7.

https://www.semashow.com/press/2016/...sweep-across-t

realcanuk

Saw them at SEMA. They look promising.

outhouse

Comp is going to have to make those out of gold before I would pay a nickel after all the engines their trunions have blown.

realcanuk

They will have to be proven before most would try them. The bushing model could be interesting though.

I use comp ultra golds now and would use them again. Been flawless for 4 years.

Josh B.

I hope they become available for the LS7. Comp never fails to impress.

Bad_AX

Realcanuk, did you happen to get some pics of the pallet? I'd really like to see what they have changed versus the OEM rockers.

Thanks for the post!

Bad_AX

The rocker is available in needle bearing or bushing. I've seen a lot of images of the Comp replacement trunnions wearing prematurely, but I've not seen any evidence of engine loss due to the trunnion wear. Not defending Comp, but with a long history of success in the performance industry, I don't want to throw the baby out with the bath water. I'll give these rockers a try in heartbeat if they make them for the LS7.

realcanuk

That's all the pics I have.

outhouse

I went back before joining and read up and found a quite a few lunched motors due to this failure.


Thought it was common knowledge.

outhouse

The only way ill even think of these is to wait a year or two and 20,000 miles of clean not one problem rocker/trunion.


As it stands now if they used the same trunion, its fn garbage as it sits.

Bad_AX

This is not a trunnion thread. You have 18 posts in the "Failed COMP CAMS Trunnions" thread. Got it, 10-4, Rodger, Understood. For me personally, I don't care about the needle bearings because you don't have to have them.

MTPZ06

Certainly an interesting development that they're now offering a bushed version...but nothing for an LS7 (Yet). Must be a reason behind those.

I'd still like to see a hardness test done on trunion materials (from all widely used vendors). I don't think the Comp needle bearings are the issue, it was the hardness of the bearing material used on the shaft IMO. I would just want to make sure they used a harder alloy in these. For now, the T&D adjustables would still have my money if and when I ever go to a roller tip. But I'd certainly be interested to see how these stand up to the test of time.

outhouse

What I have is comp trunions trashing motors and these rockers come with comp trunions.


You can tell people the sky is sunny and the water is fine, but that is not the case just yet.


We advise people here not to use comp trunions, and for that matter bronze bushings have no track record either. Ones ive seen were trashed looking a little over 1000 miles and NOT a long term solution.


Got it?

outhouse

Exactly my whole point.


If they are offering the same old crap, its not an upgrade it is a serious downgrade.


The shafts were literally junk and comp did not stand behind crap, and refused to help a single person out of the hundreds of thousands of dollars [collective cost] their trunions cost the people who trusted them.

outhouse

Agreed, provided they are not heavier.

Unreal

The comp adjustable pushrods looked neat too.

If they made a ls7 version of these and they turned out to be ok, maybe, but I don't see much issue with stock for most applications.

realcanuk

Yeah. The pushrods are a great idea.

Nice rant going on here. LOL

I'm pretty sure a company like Comp would learn something from the past and improve on these rockers. I personally have never had issues with there products, but I'm sure everything they make Is garbage.

Unreal

I run a comp cam in my car. No issues. Yes the trunnions failed but not all of their stuff is crap, just some of it.

If you didn't have to machine the heads for the "bolt on" t&d rockers I would probably have ordered a set already.

outhouse

No one is stating that in any way shape or form.


I run a comp cam. But we still do not recommend any comp trunions yet.


Would you gamble and run these? not me, until a track record shows up.

Bad_AX

I started this thread to ask if anyone saw these new rockers at SEMA and turns out that a member did and he post a good pic. Much appreciated.

Who the F__K is "WE". So you joined the CF in June and you are now the authority on LS7 valve train components? With over 2400 posts in less than 6 months you must not have a day job. Please go start your own thread to hate on Comp Cams. What you are posting here is adding nothing to the conversation that you haven't already said at least 20 times.