How To: American V8 Lifter Bore Mod & Bronze Bushings! Backyard Big Block Machining

Engine builders, this one is for you! 🛠️ Join us in Tom's shop as he tackles a crucial task on a GM-based Dart Big M V8 block: enlarging the lifter bores to make way for high-performance components. This modification is critical for running oversize racing roller lifters and custom bronze lifter bushings on big-inch, high-RPM builds. Tom shows you exactly how he achieves machine-shop precision using his Series 2 Bridgeport mill right in his own backyard shop. He details the entire process from setup to final fitment: Setup: Fixturing the heavy Dart Big M block on the Bridgeport. Enlargement: Using specialized precision reamers to open up the stock lifter bores. Finishing: Honing the enlarged bores to the exact tolerance required for the new bronze bushings, ensuring proper oil retention and longevity. This is a deep dive into machining that you won't see every day. If you're planning a serious build or want to learn advanced engine block prep, this video is a must-watch! 🔗 Tools & Equipment Used: Dart Big M V8 Block Bridgeport Series 2 Mill Oversize Reamer Set Bore Hone Bronze Lifter Bushings 👍 Did you learn something new? Hit the Like button! 🔔 Subscribe for more pro-level, backyard engine building content! Watch this next: #DartBigM #BigBlockChevy #BBC #GMV8 #BigBlock #Machining #Milling #EngineMachining #Reaming #Honing #ManualMachining #LifterBores #OversizeLifters #RacingEngine Instagram - @South_Omaha_Speed Facebook -   / southomahasp...​   Instagram - @Brotein_Films Facebook -   / broteinfilms​​​   Website - https://www.broteinfilms.com