want to get a header for my 72 z . what is the type i need square or round port. thx steve

IF it is the stock motor you will need a square port header. You would or should have an E88 head if that is the case. Now we are talking about cars that have been around for 30+ years and if someone has done a motor swap that could be incorrect.

I would suggest looking at the stamping on the head and verifing what head you have then we can give you the correct information. Also, a little examination on your part will tell you if you need a square or round port header...look at what is on the car now....It is pretty obvious if you have a round or square port header currently.