Small Block Solid Roller Lifters - Used

I did not have to bush or tube my block. I checked the clearances of each lifter bore for wear and the clearance with the lifter pairs. I also mocked up the cam, lifters and rocker gear to be sure the oil band was not exposed as the engine rotated. Mine was a bracket race only motor.

I would say it will depend on your combination of parts and block clearances. It is always advisable to check before buttoning up the motor regardless of the advertised claims.