Flexplate 153T SBC Late No Balance

The Flexplate 153T SBC Late No Balance from Quarter Master is purpose-built for small-block Chevrolet engines running late-model configurations without external balance requirements. This flexplate serves as the critical coupling between your engine's crankshaft and automatic transmission, designed specifically for builders who are upgrading or rebuilding SBC powerplants with precision-matched drivetrain components. Whether you're swapping a fuel-injected LS-era engine into a classic platform or completing a modern SBC build, this flexplate eliminates guesswork in driveline integration.

The 153-tooth ring gear design ensures reliable starter engagement across the full RPM range while the "no balance" specification means this flexplate is engineered for engines that don't require external balance weights—a common scenario with internally balanced stroker builds or factory-balanced late-model SBC assemblies. Quarter Master's engineering eliminates the vibration issues that arise from mismatched flexplate balance to engine balance, maintaining driveline harmony from idle to wide-open throttle. The compact 13.1 x 2.6 x 16-inch footprint and 4.07-pound weight keep rotating mass minimal, reducing parasitic inertia losses while the precision-machined bolt pattern ensures repeatable, zero-runout mounting to your crankshaft.

This flexplate is ideal for street and competition builders running TH350, TH400, or modern overdrive automatic transmissions behind internally balanced small-block engines. Installation requires engine-to-transmission alignment with torque-plate precision; verify your engine's balance specification before purchase to confirm no-balance suitability. Proper bolt torque sequencing and application of medium-strength threadlocker on fasteners ensures longevity under load, particularly critical in high-horsepower or forced-induction applications where driveline stress multiplies.