OEM PART# 19329617 LT1/LT4/LT5 Aluminum 6.2L Bare Block-Direct replacement for 2014–2017 Stingray and 2015–2017 Camaro SS- LT Production aluminum block with iron sleeves-Production oiling system- 9.240” deck height-Nodular iron 6-bolt main bearing caps-Use only with LT1-style cylinder heads-4.065” finished bore (103.25mm)- Provisions for Active Fuel Management