Chattering noise.. search narrowed down.

They are Moroso plug wires. Surprised they may cause this sort of problem though only under load although they do virtually touch sometimes.

The car rarely sits longer than a week. One minute the noise wasnt there then it was.. I have heard that tuned small blocks (370bhp) suffer head gasket failure due to the reduced number of head bolts used compared with a big block?

This engine was built about 2 yrs ago using all new quality parts assembled by the top Chrysler guy in the UK who looks after the Montiverdi collection. ARP head bolts, Fel Pro Head gaskets etc, new heads.

Most recently had the alloy edelbrock heads skimmed and compression up to 10:1 so unsure really. Car ran fine and this has just started.

Cheers guys..