This is a GM Genuine Parts or Chevrolet Performance 6.2L Gen V LT-Series bare engine block, used in LT1, LT4, and LT5 engines (2014-2017 Camaro SS/Stingray).
Aluminum block with iron sleeves, 6.2L 6-bolt cross-bolted main caps. GM 18old617 avi
Other GM parts with a 617 suffix include a cylinder head with valves (12699617), a rear radio speaker (13264617), or a fuel filter bracket (10400617). Summary Report: 19329617 LT1/LT4/LT5 Aluminum Bare Block Go to product viewer dialog for this item. This is a GM Genuine Parts or Chevrolet Performance 6
Designed for GEN V LT-Series engines (LT1/LT4/LT5). Summary Report: 19329617 LT1/LT4/LT5 Aluminum Bare Block Go
Production casting with provisions for direct fuel injection and Active Fuel Management.
Based on your query "GM 18old617 avi," the most likely match in General Motors' cataloging systems is part number (often ending in 617) or a similar 617-suffix part, rather than "18old617".
