Conversation Between 351M and littlebigfoot91

Hi 351M, I'm new here and saw a post you put out trying to help someone with a 302. I have a question for you. You had said if its a real HO 302 it has a different firing order than a standard 302? This may be the answer to my problem with my truck, I have a '91 f-150 that had a 302 in it, it now has what I believe to be a HO 302. Cuz I have the firing order set to 1-5-4-2-6-3-7-8 and don't really wanna start and run should I try other firing order? If so can you tell me that order? Thanks