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Martin I would definitely be interested in a set my boy Fran at RPM is building me a new a ERL 434 super deck 6 bolt block ,six bolt heads Ron shearer big single turbo kit in a 93 fox body notch and I need a set to upgrade my stock rockers , so please pm me I no there better then the stock ones and we made 1180 wheel with them for two years and the stock ones never failed so I don't have to know what there made of that's not my area and I had the first c6 in the eights on pump gas so hit me up u will sell plenty of these don't worry about the high performence guys scared to spend 300 bucks
Martin I would definitely be interested in a set my boy Fran at RPM is building me a new a ERL 434 super deck 6 bolt block ,six bolt heads Ron shearer big single turbo kit in a 93 fox body notch and I need a set to upgrade my stock rockers , so please pm me I no there better then the stock ones and we made 1180 wheel with them for two years and the stock ones never failed so I don't have to know what there made of that's not my area and I had the first c6 in the eights on pump gas so hit me up u will sell plenty of these don't worry about the high performence guys scared to spend 300 bucks
There's several threads going on this and I kinda jumped the gun. Martin's CRAZY busy so I shouldn't have expected an answer so quick. Here's his response:
Originally Posted by Martin Smallwood
I must of missed your post Dave, my apologizes.
To my knowledge the valve guide and exhaust valve issue with the LS7 engine is not caused by an issue with the rocker arm. I am not an expert on the LS7 issues, but my understanding was a poor choice in the design of the exhaust valve opened the door to guide issues and the issues the LS7 has experienced.
The needle bearing that encapsulates a rocker arm trunion does not rotate 360* around the trunion during engine operation, and neither does the bushing in my kit. It's not like a needle bearing in a roller lifter that has a wheel. The needle bearing only rotates as far as the rocker is actuated. In this instance for the needle bearing to rotate 360*, the entire rocker would have to also rotate 360* like the wheel of a roller lifter.
So in this same instance no matter needle or bushing, the same needles or the same area of the bushing sees the same load over and over again. In a needle bearing application, only a few out of all those needles see load which means that load is concentrated in a much smaller area than with a bushing which spreads it out over a larger area.
This is where the bushing is superior in terms of handling load and wear. Since the area that the load is being placed upon is greater, the actual load that the part sees is significantly less leading to less wear and tear on moving parts.
I have a few beta testers that I sent kits to that will be making posts regarding installation and their experience with the kits.
I've also sold 30 kits +/- so far personally, so there will a lot of them out there making the rounds very soon.
It'll be a little while until I upgrade my valve train but I'll be interested to see what people have to say about these until then. I can't imagine they are a worse option than any needle bearing upgrade.
Just got the new trunnion/bushing kit...I was checking them out closely and noticed on side had slightly more chamfer to it than the other. Since the kit didn't come with any install instructions I figured it was best to just call Straub Technologies directly. He informed me that the straighter edge goes to the outside and the chamfered side goes to the inside. I applied some assembly lube very lightly on the inside of the rocker arm and the inside of the bushings. They pressed right in with no issue. They look to be a nice piece. Hopefully they do well in the engine.
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