wheel drive, originally equipped with a 454 TBI engine and 4L80E automatic ... -in replacement for any high-mileage 454. With more cubic inches, improved ... more torque than the factory 454 ever delivered. The HT502 engine comes ... specifications. Use externally balanced flywheel or flexplate. GM Performance Parts ...
. A. 3963523 Crankshaft, forged steel (454 502 cubic inches) Externally balanced, ... counterweighted torsional damper and flywheel or flexplate. 3963524 Crankshaft, ... forged steel (454 Mark IV 502 cubic inches) Premium quality, externally balanced ... counterweighted torsional damper and flywheel or flexplate. 14096983 Crankshaft, ... forged steel (Gen V Gen VI 454) (not shown) Externally balanced, ... 3.75" stroke for 1991-and-later 427 cubic inch engine. C. 88961554 Crankshaft, ... forged steel (572 cubic inches) Premium 4340 steel forging for 572 ... cubic inch engines. Must use main bearing P/N ...