SILV-O-LITE
More Information for SILV-O-LITE 1631
{Alternate Inventory Numbers: 1631.030, 1631.040, 1631.020, 1631.060, 1631STD, S1631020, S1631030, S1631040, S1631060, S1631STD}
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SILV-O-LITE 1631  
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  • 0.040" Oversize ($29.99/Each) x8 $239.92 Warehouse
  • 0.020" Oversize ($30.79/Each) x8 $246.32 Warehouse
  • 0.030" Oversize ($30.79/Each) x8 $246.32 Warehouse
  • 0.060" Oversize ($30.79/Each) x8 $246.32 Warehouse
  • Standard ($30.79/Each) x8 $246.32 Warehouse
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SILV-O-LITE 1631 Specifications
Bore Diameter (IN)4.125
Bore Diameter (MM)104.8
Compression Height (In)1.72
Compression Height (mm)43.7
Compression Ratio10.1
Crown (cc)+14.5cc
Crown TypeDish
Engine FamilyOldsmobile V8
Engine ManufacturerOldsmobile
Oil Ring Thickness (In)0.1875
Pin ConfigurationOffset
Pin Number0908x300B
Pin TypePress
Piston Head TypeDish
Piston MaterialCast 332 Alloy
Piston Pin Outside Diameter (In).980
Piston Pin Outside Diameter (mm)24.9
Second Compression Ring Thickness (In)0.0781
Top Compression Ring Thickness (In)0.0781
Top Land.245
2.940" Diameter Recess .120" Deep

For 100 years Silv-o-lite has produced high quality OE replacement pistons for engine rebuilding. Every manufacturing process is done in house, including alloying the aluminum, casting, heat treating, diamond machining, and a full array of anodizing and coatings for the piston crowns, ring grooves, and skirts.


Additional Resources

General Installation Instructions
OEM / Interchange Numbers: 398666, 400561

SILV-O-LITE Warranty Information:
12 Months