Speed Pro Economy Piston Rings 3.736" Bore 5 64 x 5 64 x 3 16" Thick Standard Tension Iron R1 LONGRANGE UPGRADE 165" Gasket BoreSince 1989 FIV20002 41551 OR 165" Gasket BoreSince 1989 GM A Body 1965 67 GM F Body 1967 69 GM X Body 1968 76 Speed Pro engine parts are engineered to make the engine rebuild easier and boost horsepower or cruisin' down the road
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