The Rottler Lifter-True blueprinting fixture allows Performance Blocks Inc to re-machine the lifter bores and correct their position in an engine block front-to-rear and up-and-down, as well as to restore the correct lifter bore angle as referenced from the cam-crank centerline. In addition, Performance Blocks Inc blocks utilizes the Rottler F65A CNC Engine Block Blueprinting machine with the lifter blueprinting program to positions the precise blueprinted lifter bore location.

  • Step 1 spot facer
  • Step 2 end mill
  • Step 3 Reamer
  • Step 4 for ID Reamer
  • Step 5 spot face


Our highly skilled professional engine rebuilders and machinists will succeed where others have failed.

Lifter Bore Bushings Installed Ford Chevy Mopar

Rottler CNC Engine Block Blueprinting Machine utilizes the Lifter Bore Blueprinting program.Lifter Bores are machined to exacting tolerances from engine manufacturers blueprint specifications bore center. The Rottler performance blueprinting fixture insures the proper main and cam centerline references are corrected and maintained.The CNC routine includes probing the lifter bore locations , relocation to blue print specs and probing for verification of the corrected locations.