sparkplug firing order? please help

i have a 1984 Chevy Blazer S10 series 4x4 and i cannot find a chiltons or a haynes manual near where i live. when i got the truck there where no spark plug wires and i have no idea how to find out the firing order. it is a 2.8L V6 engine. if anyone can help me with this i would be so gratful

Charles

firing order 1-2-3-4-5-6



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