When I installed my new cam in summer the lifters I bought new for my install were different than the ones I took out. The new ones only have a shallow area removed around the body but the old ones go down a good 1/4". The old ones are significantly lighter. How much of a difference could this make on wear and tear over time heavier vs lighter? If i had a chance to get the same machined down units for my 261 build is it worth it?
