The Small Block Chevy 350 383 400 PBM 73017-3 Double Row 3 Keyway Timing Set is a high-quality, direct replacement timing set designed for Chevy engines. Made in the United States by PBM, this 3-piece timing chain set features interchangeable part numbers with Melling, Cloyes, and Mahle Clevite, ensuring compatibility and reliability. With double row construction and three keyways for added adjustment flexibility, this timing set is essential for ensuring proper engine timing and performance in Chevy vehicles.   My husband and I had a machine shop for many years.  He passed, and this is part of the shelf inventory I am selling.  FREE shipping via USPS ground advantage.  I ship out same or next day and will always combine shipping to save money.  Be sure to check out my store for more great deals on parts and more!