No matter the condition of your 1978 Cutlass, OPGI has the Engines & Components you need to boost performance and get you back on the road. We currently carry 655 Engines & Components to choose from for your 1978 Cutlass, and our Price Match Guaranteed prices range from as little as $1.99 up to $31,856.99. OPGI offers Comp Cams plus 29 other trusted brands of Engines & Components for your 1978 Cutlass, to help you find quality parts you can rely on. With OPGI's 45-day return policy and thousands of customer reviews, you can shop with the utmost confidence. Enjoy parts delivered directly to your home, or visit our sunny Southern California Showroom & Warehouse to check out our Engines & Components in person.