Austin Healey 100/4 Aluminium cylinder head FAST ROAD
Superb quality British made cylinder head with the following specifications
Fully assembled with valves and Springs
Manufactured from heat treated LM25 grade aluminium
Combustion chamber size 62cc
Inlet valve diameter 45.08 mm
Exhaust valve diameter 40.56 mm
Fully ported and polished on the intake side.
Compression ration will depend on various factors such as the type of pistons used and if the block has been skimmed.
