I do belive its the same as the 1985.It would be 123456
I have an '87 s10 with a 2.8L v6, the firing order is 123456. I am quite sure that your firebird is the same.
1-8-4-3-6-5-7-2 Clockwise Rotation On Distributor
The firing order for a 2.0 L. is 1423.
The firing order is 1-3-4-2
1342
The firing order on a 1986 Chevrolet Celebrity V6 is: 1-2-3-4-5-6.
firing order is 1, 3, 4, 2 for a 86' B2000
18436572
1,8,4,3,6,5,7,2
18436572
123456