Point taken Jac Mac, I did indeed mean 'solid flat tappet'. I used to run solid roller cam, broke a roller, wiped out the cam, rebuilt the motor! While I might be tempted to run a solid roller again, THIS time I would spring for the very latest roller design with some kind of pressure
oil feed system (BIG money). I don't think you can do that with a 'solid flat tappet' only type block?