The GM Performance Parts HT-383 has been specifically engineered for low-rpm torque, and it’s packed with durable parts that are all brand-new. It produces 435 lb-ft of torque at 4,000 rpm, but more importantly, it produces more than 400 lb-ft of weight-moving torque from 2,500 rpm all the way up to its 4,000 rpm peak. The bottom end has a 383 stroker forged steel crankshaft, heavy-duty rods, and hypereutectic pistons. The block is cast iron with four-bolt main caps. The brand new HT-383 is a great alternative to salvage and rebuilt engines. Once installed, the HT-383 should make it possible for me to look forward to that big hill or long haul.