KB Claimer Performance Series SB Chevy Dome Piston Set - 4.030" Bore - 3.480" Stroke - 5.700 Rod Length H776003S 1967-1969 GMC K25/K2500 Pickup

1967-1969 GMC K25/K2500 Pickup

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1965-1977 Pontiac Bonneville

KB Claimer Performance Series SB Chevy Dome Piston Set - 4.030" Bore - 3.480" Stroke - 5.700 Rod Length H776003S 1967-1969 GMC K25/K2500 PickupAchieve maximum performance with high piston ring placement and low thermal conductivity. Top rings operate at higher temps and require slightly larger end gaps (4. 000" bore x . 0065" gap factor = . 026" total end gap). It is recommended that ignition timing be retarded 2 4 degrees. Sold in sets of eight with wrist pins. Coated skirts. Designated as O. E. relacement for engines manufactured in years Truck 69 78, Passenger Car 69 70, Corvette 90 91.