The Alfa Romeo V6 engine (also called the Busso V6) was a 60°  V6 engine made by Alfa Romeo from 1979 to 2005.
It was developed in the early 1970s by Giuseppe Busso, and used on the Alfa 6 with a displacement of 2.5 L (2,492 cc) and a SOHC 12-valve cylinder head.
Later versions ranged from 1,997 to 3,195 cc (1.997 to 3.195 L) and had DOHC 24-valve valvetrains.
The original design had short pushrods for the exhaust valves in a design similar to earlier Lancia Fulvia engines.
The first DOHC version was in the 1993 Alfa Romeo 164, with an aluminium alloy engine block and head with sodium filled exhaust valves.

The Alfa Romeo V6 has been used in kit cars like the Ultima GTR, Hawk HF Series, and DAX, as well as the Gillet Vertigo sports car.
In August 2011 EVO magazine wrote that "the original Alfa Romeo V6 was the most glorious-sounding six-cylinder road engine ever," while the British Classic & Sports Car magazine described it as "the best sounding engine this side of a Maserati V8."
The Alfa Romeo V6 engine has also been used in ice resurfacer made by engo Ltd. in Italy.
The Alfa Romeo V6 engine (also called the Busso V6) was a 60°  V6 engine made by Alfa Romeo from 1979 to 2005. It was developed in the early 1970s by Giuseppe Busso, and used on the Alfa 6 with a displacement of 2.5 L (2,492 cc) and a SOHC 12-valve cylinder head. Later versions ranged from 1,997 to 3,195 cc (1.997 to 3.195 L) and had DOHC 24-valve valvetrains. The original design had short pushrods for the exhaust valves in a design similar to earlier Lancia Fulvia engines. The first DOHC version was in the 1993 Alfa Romeo 164, with an aluminium alloy engine block and head with sodium filled exhaust valves.
The Alfa Romeo V6 has been used in kit cars like the Ultima GTR, Hawk HF Series, and DAX, as well as the Gillet Vertigo sports car. In August 2011 EVO magazine wrote that "the original Alfa Romeo V6 was the most glorious-sounding six-cylinder road engine ever," while the British Classic & Sports Car magazine described it as "the best sounding engine this side of a Maserati V8." The Alfa Romeo V6 engine has also been used in ice resurfacer made by engo Ltd. in Italy.
Alfa Romeo V6 engine