General Motors has outlined further details surrounding its US$890m investment across five North American plants.

The investment includes facility renovation and installation of new, engine machining and assembly equipment, as well as special tooling designed for engine quality.

At the casting facilities, investments include expansion of semi-permanent mould and precision sand casting technologies used in dimensional accuracy and material strength.

“GM is investing in our plants, restoring and creating jobs and making progress toward our vision of designing, building and selling the world’s best vehicles,” said GM North America president Mark Reuss.

“These latest investments show our commitment to improving fuel economy for buyers of every GM car, truck and crossover.”

The next generation small block engine family will have direct injection and a new combustion system design. The new engine family will rely exclusively on aluminium engine blocks, which are lighter.

In addition to being E85 ethanol-capable, these engines are being designed with the capability to meet increasingly stringent criteria emissions standards.

GM adds it will give specifics about the engine capabilities as well as product applications will be shared at a later date.

Since the launch of the new GM last July, the company has announced investments of more than US$2.3bn at 22 facilities in the US and Canada.

Two plants will support the engine production, specifically Tonawanda with an investment of US$400m resulting and St Catharines in Ontario – an investment of US$235 million.

Three plants will support engine casting and component production, namely Defiance, Ohio with an investment of US$115m; Bedford with US$111m and Bay City an investment of US$32m.