S10/T10 Blazer 4WD V6-4.3L VIN W (1997)
Piston: Description and Operation
The pistons are cast aluminum. The pistons use two compression rings and one oil control assembly. The piston is a low friction, lightweight design with
a flat top and barrel shaped skirt. The piston pins are offset 0.9 mm (0.0354 inch) toward the major thrust side (right side) to reduce piston slap as the
connecting rod travels from one side of the piston to the other side after a stroke. They have a floating fit in the piston and are retained by a press fit in
the connecting rod.