Silv-O-Lite - Better Pistons Since 1922

General Motors

L 4 138 / 2.3L
1988-94
Oldsmobile

STD. BORE SIZE

3.622 / 92mm

COMP. HEIGHT

1.24

PIN DIAMETER

0.8665
offset

COMPRESSION RATIO(s)

9.5

Part
Number

1642h

SIZE AVAILABILITY

VIN CODE

a , d , g , 3

RING PACK

2-1.5mm
1-3.0mm

O.E. ASSY. NO.

24573576

NOTES

Hypereutectic. Quad-4 Engine. 2.660' Dia. Head Recess .150' Deep W,4 Valve Reliefs. Not Intended For Racing Applications.

WRIST PIN P/N

LOCK PIN P/N

APPROX. OVERALL LENGTH

RECOMMENDED FINISHED BORE DIAMETERS

PISTON MAJOR AXIS MUST BE MEASURED PERPENDICULAR TO THE PIN CENTERLINE AT 70 DEGREES FARENHEIT 3.710" DOWN FROM THE PISTON HEAD

Piston Oversize	Piston Major Axis Diameter +.0000/-.0005	Recommended Finished Bore Diameter