Welcome to the new CCCUK website!
Our old website is still available but no longer open for new posts. Click here to visit it. Click here for more information.
If you're not already a member of the CCCUK, join now!

Exhaust port design

#1
Oooooh, first post!!!

So, I have a ‘70 C3 with a replacement ZZ4 engine, which has a block stamped from the mid 90’s and I am in search of replacement headers. In the process of doing so I’m beginning to suspect that it was a short block kit (engine base without cylinders, heads etc) rather than a complete long block kit. Specifically because the exhaust ports I have are square (typical for a C3) and every header I can find for mid-90’s Chevy engine has round ports.

As I only have my hodgepodge vette to compare with, can anyone help identifying what headers I should be buying? What shape ports do you have on your C3 and C4s?
 
Top