Clevite Pontiac V8 350-400-455 1955-79 Con Rod Bearing SetIdeal for rebuilding engines where more demanding use is anticipated, such as heavy duty, motorsports, or street performance. As it is the most versatile replacement engine bearing, P Series is suitable for most OE applications. Due to the increased load capacity of the TriMetal design, it is a suitable upgrade from BiMetal engine bearings. This Part Fits: Year Make Model Submodel 1957 GMC PM151 Base 1957 GMC PM152 Base 1957 GMC PM153 Base 1975