Just to be clear - it isn't really "street driving" that's the potential problem. It's prolonged low speed operation. You could achieve the same results as most of the street roller profiles I see with a HR setup. But if good oil is used and it doesn't sit in traffic jams it will likely be ok. Note that the LS7 has a factory redline of 7,000 but can rev as high as 8,000rpm (though it won't power up there with a stock cam and intake, etc.) using HR lifters. Of course, it also has lightweight valves, etc.

Rich

 

Me too...but it's in my Cummins. My buddy Crazy Bob runs Crower in his Monte and swears by them.

-Dustin-

 

Hey, seems to work pretty good. Has a good additive package for solid roller and flat tappet applications.

I had to take the engine back down at 1500 miles, not so much as a scuff on the lifters or cam.

David