Saginaw Metal Casting Operations

Saginaw Metal Casting Operations is an automobile engine foundry plant in Saginaw, Michigan. Opened under GM management in 1919, the factory produces engine blocks and cylinder heads for General Motors vehicles. The factory currently occupies 1.9 million square feet on 490 acres. The location was originally the Marquette Motor Company until acquired by William Durant in 1909 when the car was discontinued in 1911. During World War I, it was used to manufacture mortar shells for the US Ordnance Corps, then was repurposed for engine block casting when operations at Northway Motor and Manufacturing Division ended in 1925. Historically in September 1927 it was known as the Chevrolet Grey Iron Foundry. In the past when it was called GM-Saginaw Product Company (SPC) a cloverleaf casting symbol mark was cast onto the iron component.^[1]^[2]

The location has been the primary source of engine block and cylinder heads for all of GM's engines, to include Oldsmobile, Pontiac, Cadillac, Chevrolet, Buick and GMC for most of the 20th century. The address is 1629 N Washington Ave. Saginaw, MI 48601, and is located on the Saginaw River. Camshafts, connecting rods and other internal engine components are manufactured at . Casting operations were also provided by Massena Castings Plant and .

Products[]

Currently the location provided Aluminum engine blocks and cylinder heads which then are assembled at Tonawanda Engine, Romulus Engine, Flint Engine South, St. Catharines Engine Plant and other engine assembly factories for the items listed below.

2.2L/2.4L L850 engine I4 blocks
5.3L/6.0L Gen IV V-8 blocks and heads
5.3L/6.2L Gen IV V-8 block pre-machine

References[]

^ "Rembering the old Chevrolet Parts Plant". Pure Saginaw. CyberChimps. Retrieved 21 April 2021.
^ "Saginaw Metal Castings Operations". GM Corporate Newsroom. General Motors. Retrieved 21 April 2021.