• Flat top with 8 valve reliefs.
    • Fits both 14 degree and 20 degree heads.
    • Piston & Ring Kit.

Application Summary:

Year Make/Model
1967-1978 Pontiac Bonneville
1967-1978 Pontiac Catalina
1967-1970 Pontiac Executive
1967-1979 Pontiac Firebird
1973-1975 Pontiac Grand Am
1975-1977 Pontiac Grand LeMans
1967-1977 Pontiac Grand Prix
1971-1978 Pontiac Grand Safari
1972-1975 Pontiac Grandville
1967-1973 Pontiac GTO
1967-1974 Pontiac Laurentian
1976 Pontiac Laurentian
1968-1977 Pontiac LeMans
1967-1974 Pontiac Parisienne
1976 Pontiac Parisienne
1970 Pontiac Strato-Chief
1968-1970 Pontiac Tempest
1970-1971 Stutz Blackhawk
Attributes
Base Number 1526
Bore (in) 4.12
Bore (mm) 104.6
Bore Diameter 4.12
Compression Ratio 8.2
Country of Origin (Primary) MX
Crown (cc) +10cc
Crown Type FLAT TOP
Eng. Disp. In. 400
Eng. Disp. Liters 6.6
Engine Family Pontiac V8
Engine Manufacturer Pontiac
Hazardous Material Code N
Includes Ring Set 4120AM8.STD
Life Cycle Status Code Available to Order
Oe Assembly 9788366, 9788369, 478810, 499053
Oil Ring Thickness 0.1875
Oversize STD
Oversized No
Oversizes STD .020 .030 .040 .060
Pin Configuration Offset
Pin Number 0980x308A
PIN TYPE Press
Piston Head Type Flat
Piston Material Cast 332 Alloy
Piston Pin Outside Diameter 0.98
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 0.3
Year From 1967
Year Range 1967-1979
Year To 1979
GTIN 00800745297433