We supply Alloy Alperform cylinder heads for 3 litre Feltham engines in STD road to race specification.

These heads are an improved design with increased cooling efficiency via altered centre cores which dont trap the coolant like the original cast iron heads.

These heads are fitted with hardened valve seats as standard, and hence can be used with unleaded petrol without further additives.

Can give more horse power than original heads when set up properly, especially after porting carried out for us.

When we assemble the heads we use our Colsibro bronze hard wearing valve guides, these allow closer valve to guide clearances, this is because they require minimal lubrication.