Fits 302 production and Ford Performance cylinder blocks. Stock 2.1232 in. rod journal diameters. Use with M - 6200 - D50 'Sportsman' rods (5.40 in. long) and 1.090 in. CD pistons in standard 302 block for 347 cu. in. Features Lightening holes, Rounded CW leading edge, tapered trailing edge, Rod and main journals are nitrided and polished. Requires custom pistons, rods and balancing