The 267 was introduced in the late 1970s and used in Chevy/GM F-Body, G-Body, A-Body, and some B-Body vehicles.
Designed to help Chevy/GM vehicles meet increasingly stringent emissions standards, the 267 has a 3.5in bore, the smallest bore of any Chevy small block.
Ultimately, the 4.4 267 was phased out in 1982 after failing to meet emissions standards.