If it is a Chevy 350 the firing order should be printed on your intake, but is usually 1-8-4-3-6-5-7-2. This was the case on my '94 Chevy truck.
You forget to say whether you have a V-8 or a six. The firing order of a Chevy V-8 is 18436572. Cylinders #1357 are on the driver side, cylinders 2468 are on the passenger side. The numbers start at the front of the engine The firing order of a six is 153624. Number one cylinder is at the front of the engine.
I believe it is like all chevy's 18436572
Start clockwise: firing order is 18436572
1,8,4,3,6,5,7,2 for V8
any motor manual,chilton,s or haynes will have a firing order diagram . the firing order is 18436572
Distributor rotates clockwise.
1-8-4-3-6-5-7-2 The dist turns clockwise and 1-3-5-7 cylinders are on the drivers side.
look on the intake manifold