MRE roller rockers on Trick Flow heads

Rocker arm sweep contact on valve stems was approx .055 inch width, contact starting at valve stem max diameter and moving toward exhaust side. This was for .550 valve lift.

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The sweep width is over twice what it should be for a .550" net valve lift. The off center pattern won't be an issue. The roller should be at exactly the same place with the valve on the seat, as it is with the valve at full lift. I would guarantee that the shaft needs to move over .100" for your combo. Or, you could put a solid roller in it, with a bunch of valve spring, and flog it on a dyno. It will rev just fine......for a while.

Trick Flow did move the stands from the stock location, but it wasn't enough to get the geometry closer to what most applications need. I've tried to get them to change it for the new 270 head, but no dice so far.0516161420.jpg 0516161441.jpg