No matter the condition of your 1978 Cutlass, OPGI has the Camshafts & Valvetrains you need to boost performance and get you back on the road. We currently carry 34 Camshafts & Valvetrains to choose from for your 1978 Cutlass, and our Price Match Guaranteed prices range from as little as $13.99 up to $1,599.99. OPGI offers Comp Cams plus eight other trusted brands of Camshafts & Valvetrains 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 Camshafts & Valvetrains in person.