I知 not disagreeing with you for the most part. Roller lifters are the pinnacle of valve-train technology.
What I知 getting at is the roller lifters that come standard on new vehicles that were engineered to use roller lifters are designed to last the duration and will undoubtedly be reliable.
The question I知 raising is aftermarket type roller lifters you might purchase from Jegs, Summit or other speed shops, and ones designed for use in older engines that didn稚 originally utilize roller lifters may have questionable longevity when compared to a new Dodge Hemi over at the car lot.
What I知 talking about is OEM VS. AFTERMARKET.
NOT saying that roller lifters are a bad idea in general.
I believe this is what Doc was getting at as well.
