Chevy SBC 350 3.75 383ci 2Pc RMS Rotating Assembly Only (C, I 5.7, H +30). This item is in the category eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Crankshafts & Parts. Fits chevy sbc 350 3.75 383ci 2pc rms rotating assembly only (c, i 5.7, h +30) engine stroke (in) 3.750 in.