Chrysler Plymouth Dodge Mopar 318 and 5.2 Magnum engine Wiseco Pro Tru Street forged flat top piston and ring set. This set works in either the older style 318 A engine or the newer 5.2 Magnum series engines.
This forged 318 piston set is for use with a standard stroke crankshaft of 3.313 in., stock standard bore size of 3.910 with a stock rod length of 6.123 in. and a pin size of .984 in. The pistons have 2 valve reliefs in them for valve clearance with higher lift cams. Compression is 9.6-1 with a 62cc chamber head or 9.4-1 with a 64cc chamber. Ring grooves are 5/64 5/64 3/16. They work with either a floating piston pin or pressed pin type connecting rod.
Set includes 8 pistons, 8 piston pins, pin lock rings and premium piston rings. 4032 forged aluminum with skirt coating for reduced friction and quieter operation.