If the original Grey six Holden made for an unlikely racing engine, its replacement was probably always destined to be used in competition.
It wasn’t just that the ‘Red’ straight-six engine unveiled in the EH model in 1963 was of a larger cubic capacity than the Grey. For one thing, it was entirely new, and available in two sizes: 149 cubic-inch (2.4-litre) and excitingly large 179 (2.9-litre) form. It also had a seven-main-bearing block. The new Holden engine was bigger, stronger, better.

Here for the first time was a Holden model with genuine performance credentials, 15 years after the first 48-215s rolled off the line.
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