Torque Plate Mopar HEMI V8 Engine Boring Honing

The ICT Billet Torque Plate for Mopar HEMI V8 Engine Boring and Honing (MPN 551300-M0P03) is a precision cylinder hone guide shoe engineered specifically for Gen III HEMI engine block preparation. This 1.98-inch thick boring plate provides critical support during cylinder boring and honing operations, ensuring accurate bore concentricity and wall thickness uniformity across all eight cylinders. The torque plate simulates the clamping forces and thermal conditions the block experiences during engine operation, eliminating bore distortion that occurs when the block is worked on without proper restraint.

ICT Billet's design accounts for the complex port geometry and aluminum casting characteristics of Mopar Gen III HEMI blocks. At 18.89 lbs with dimensions of 10.25 × 2.5 × 23 inches, the plate provides substantial mass and rigidity to minimize flex during the boring and honing process. Proper use of a torque plate during machine work is essential for achieving bore concentricity within acceptable tolerances—typically ±0.001 inch or better—which directly impacts piston ring seal, compression ratio consistency, and overall engine longevity. Without this guide shoe, uneven clamping pressure can result in out-of-round bores that lead to excessive blow-by, oil consumption, and reduced power output.

This tool is essential for serious HEMI engine builders, machine shops performing complete engine overhauls, and performance enthusiasts rebuilding Gen III blocks to factory tolerances or beyond. Whether building a street engine, truck application, or performance platform, using a torque plate during boring ensures the block foundation supports peak horsepower and sustained reliability. The precision-machined construction from ICT Billet meets the exacting standards required for professional machine shop environments where repeatability and accuracy are non-negotiable.