KB Hypereutectic SB Chevy Dished Piston Set - 4.155" Bore - 3.750" Stroke - 5.700" Rod Length Eaton Torque Control 1966-1972 Chevrolet Bel Air

1966-1972 Chevrolet Bel Air

the new piece makes efficient use of space and materials

Two configurations available:

Use with BHS532 Transmission Crossmember and Transmission Specific Adapter (sold separately) BHS534 A727 Transmission Adapter BHS535 NAG1 Transmission Adapter BHS536 8HP70 Transmission Adapter

Fire Suppression Tubing

KB Hypereutectic SB Chevy Dished Piston Set - 4.155" Bore - 3.750" Stroke - 5.700" Rod Length Eaton Torque Control 1966-1972 Chevrolet Bel AirModern piston design locates the top ring higher for improved performance. a high top ring operates at higher temperatures and requires a larger top ring end gap. To find the proper ring end gap, multiply your bore size by the ring end gap factor listed on the chart (i. e. , Street Normally Aspirated 4. 000" bore x . 0065" gap factor = . 026" total top ring end gap). Your hypereutectic performance piston will expand less than typical cast or forged