I had a GT head, but after crack testing it showed some cracks and was advised not to use it.
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3890.jpeg?w=768)
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3891.jpeg?w=768)
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3892.jpeg?w=768)
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3893.jpeg?w=768)
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3894.jpeg?w=768)
So found a 1500 head and had it machined and ported (matched in inlet manifold), Twin 40 webers and Stainless Piper exhaust
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3895-1.jpeg?w=768)
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3896-1.jpeg?w=768)
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3897-1.jpeg?w=768)
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3898-1.jpeg?w=768)
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3899-1.jpeg?w=1024)
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3900-1.jpeg?w=768)
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3901-1.jpeg?w=1024)
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3902-1.jpeg?w=1024)
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3905-1.jpeg?w=1024)
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3906-1.jpeg?w=1024)
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3907-1.jpeg?w=768)
![](https://cortinamk1240.wordpress.com/wp-content/uploads/2022/11/img_3908-1.jpeg?w=1024)
Work completed
- TANK AS REQUIRED
- CRACK TEST
- GUIDES R & R & HONE
- INSERTS SUPPLY AND FIT
- MACHINE VALVE SEATS TO MACHINE HEIGHT
- HM STREET PORT 4
- SURFACE
- ASSEMBLE
- SUPPLY VALVES
- SUPPLY VALVE SPRINGS
- SUPPLY VALVE SPRING RETAINERS
- MATCHPORT INTAKE MANIFOLD