What type of headers are these?

[PKRWUD]

Originally posted by GTMustangGirl
Since everyone seemed to disagree with my suggestion...I thought I should check again.....We have an 86 IROC Z 28 in our backyard and yes the headers are VERY similar....but the headers in the picture have to be ford headers b/c the 2 exhaust chambers are further apart from each other than chevy.So I guess I was wrong....

You were close. The difference you are referring to is due to the arrangement of the valves. Traditional small block Ford heads alternate between intake and exhaust the same way across the head (from left to right: Ex/Int/Ex/Int/Ex/Int/Ex/Int). Traditional small block Chevy's have a valve configuration that alternates on each head (from left: Ex/Int/Int/Ex/Ex/Int/Int/Ex).

Take care,
-Chris