• Hypereutectic.
    • 3.610" diameter recess .245" deep.
    • Piston & Ring Kit.

Application Summary:

Year Make/Model
1971-1973 Buick Centurion
1973-1974 Buick Century
1970-1976 Buick Electra
1970-1976 Buick Estate Wagon
1970-1972 Buick GS 455
1970-1976 Buick LeSabre
1973-1974 Buick Regal
1970-1976 Buick Riviera
1970-1971 Buick Skylark
1970 Buick Wildcat
1973-1974 GMC Transmode
1970-1971 Oldsmobile 442
1970-1976 Oldsmobile 98
1971-1976 Oldsmobile Custom Cruiser
1970-1976 Oldsmobile Cutlass
1975-1976 Oldsmobile Cutlass Salon
1971-1976 Oldsmobile Cutlass Supreme
1976 Oldsmobile Cutlass Tiara
1970-1976 Oldsmobile Delta 88
1970 Oldsmobile F85
1972 Oldsmobile F85
1970-1976 Oldsmobile Toronado
1970-1975 Oldsmobile Vista Cruiser
Attributes
Base Number 1730H
Bore (in) 4.313
Bore (mm) 109.6
Bore Diameter 4.313
Compression Ratio 8.4
Country of Origin (Primary) MX
Crown (cc) +40cc
Crown Type DISH
Eng. Disp. In. 455
Eng. Disp. Liters 7.5
Engine Family Buick V8
Engine Manufacturer GM
Hazardous Material Code N
Includes Ring Set 4312AM8.STD
Life Cycle Status Code Available to Order
Oe Assembly 1394852
Oil Ring Thickness 0.1875
Oversize STD
Oversized No
Oversizes STD .020 .030 .040 .060
Pin Configuration Offset
Pin Number 1000x317A
PIN TYPE Press
Piston Head Type Dish
Piston Material Cast 390 Hypereutectic Alloy
Piston Pin Outside Diameter 1
Piston Rings Included Yes
Ring Pack 5/64, 5/64, 3/16
Second Compression Ring Thickness 0.0781
Sold As Complete Piston and Ring Kit
Top Compression Ring Thickness 0.0781
Top Land 0.215
Year From 1970
Year Range 1970-1976
Year To 1976
GTIN 00800745297778