KB Hypereutectic SB Chevy Flat Top Lightweight Piston Set - 4.040" Bore - 3.480" Stroke - 5.700" Rod Length HTA20003 1978-1979 Mercury Zephyr Base CID

1978-1979 Mercury Zephyr Base CID 302 Naturally Aspirated GASVehicle Applications: 1978-1979 Ford Fairmont Base CID 302 Naturally Aspirated GAS

006″ wire diameter up to 2

Cams are manufactured on dedicated high precision cam grinding machines

You asked for it and AFCO delivered

Smooth High Performance Ratchet Action

KB Hypereutectic SB Chevy Flat Top Lightweight Piston Set - 4.040" Bore - 3.480" Stroke - 5.700" Rod Length HTA20003 1978-1979 Mercury Zephyr Base CIDModern 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