JE Pistons Small Block Dome Forged Piston - 4.030" Bore 1/16 x 1/16 x 3/16" Ring Grooves - Plus 14.0 cc Flashlight Holder LS1 (24x) applications can be

LS1 (24x) applications can be recognized by the rear mounted cam position sensor which is black in color

Slots are 4-3/4"L x 1-1/2"W to accommodate most combinations

1983-1990 GMC S15 Jimmy

Pressure Is Regulated Internally / Preset To 58psi

1963-1981 Pontiac LeMans

JE Pistons Small Block Dome Forged Piston - 4.030" Bore 1/16 x 1/16 x 3/16" Ring Grooves - Plus 14.0 cc Flashlight Holder LS1 (24x) applications can beJE Pistons is the leader in high performance forged pistons. JE Pistons has built a reputation that the competition can only follow. JE Pistons has a history of manufacturing the highest quality pistons and components that professional engine builders, race teams, and high performance enthusiasts alike trust and rely JE Pistons. The top engine builders in NASCAR, NHRA, IRL, IHRA, IDRA, PROSTAR and others choose JE Pistons over any other brand. JE