Stroker kit 350 - 383ci SBC LATE 1 piece rear main seal block, up to 500HP, kit includes Eagle cast 3.75" stroke cast crank suit 1pc rear main seal, EXT bal, Eagle 5.7" I-beam con rods, Speed Pro hypereutectic F/T pistons, bore STD, +.020" +.030" +.040" +.060". -11cc dish pistons also available, Clevite "P" series main bearings and con rod bearings, Speed Pro Moly rings. Trial fit rotating assembly before machining and balancing.