It still features an iron block as opposed to the aluminum M54.

The M50 uses an iron block with an alloy head.

Like the M50, it has an iron block and aluminum head with four valves per cylinder.

With the great iron block to warm them, the shop needed no other fire.

It is still an iron block with pushrods and an aluminum 2-valve head.

For the 1965 model cast iron blocks and heads were used for all engines.

He also mapped the area where the large iron block was reputed to have been found.

In 1966 reports came that the sands had shifted and the large iron block was again visible.

The OM601 was built with an aluminum head on an iron block.

Suppose the same iron block is reshaped into a bowl.