Use rings which are 1.5 mm x 1.5mm x 3.0mm, style E rings, Choose either gapless or conventional rings in .030" or.040" oversize.
Total Seal T1494 TS1 Gapless Ring Set, 3.875 Bore, 1.5x1.5x2.5MM
Total Seal SBC Chevy 350 & Ford 302 Piston Rings 4.030" Style C .030 Oversize
Total Seal CR2090-30 Race Piston Rings, 4.250 Bore Plus 30 Over
Total Seal CRG0010 45 4.040/043/8CY Classic Race Piston Rings
Total Seal CRH2012 Street/Race Rings, 4.125 Bore, 1.5x1.5x3.0MM
Total Seal CRG2010 Street/Race Rings, 4.000 Bore, 1.5x1.5x3.0MM
