One set of these and you will never buy another set of solid lifters again and never eat a lobe.

These SM are the heavy ones at 73 grams vs a std old 828 comp at 88 grams and then the pig comp lightweight edm-s at 101 grams, just right with a johnson hylift hydro.

I use modest springs, middle of the road rockers, .116 walled pushrods and bang these to 7600 over and over.

As I posted one set is going on 4 flawless years in a street/strip car with comp rockers,springs and they are on there 5th camshaft.

So there are some flawless solid cam setups in use.

The only thing ive seen with these lifters is if you get near .700 more the spring pressure needed calls for a roller core with solid lobes, at least thats what the class racers are doing.