Formally known as CID, our Aussie manufactured HRD Higgins LS-series cast alloy CNC ported heads are available to suit LS7, L98/LS3 ports for street and race applications.

Customised designed port configuration to suit your own needs. Unlike other companies we don’t have one port to suit all.

All heads feature 6-bolts per cylinder and use CHE seats and guides.

Our LS 6-bolt ports are designed and developed by Darin Morgan at Reher-Morrison Racing Engines.


LS3/ L98 / L76
LS1 241 casting
LS6 243 casting


VN cast iron
Yella Terra -9

Chev SBC

13° Racer Pro/Brodix/Dart
15° Racer Pro/Brodix/Dart
18° Racer Pro/Brodix/Dart
23° Racer Pro/Brodix/Dart

Chev BBC

Brodix SR20
Brodix Big Duke
Dart big block


300C 5.8, 6.1, 6.4

Can’t see what you’re looking for?

No problem. We have more port designs, but cannot possibly list them all, so please don’t hesitate to call or contact us.