i have an 85 trans am that had a 305 tpi in it and i am now putting a 350 tpi from a 89 trans am in it but i'm finding a lot of the connectors don't line up and i'm not sure where they go. where can i find diagrams of a 85 and an 89 so that i could compare and find out?

 

Autozone has some, but it might not be all. You're best bet would be to get a Helm manual for both.

 

I am working through the same issues right now. How far into this are you? I have found out that I have power to dash, ignition, and lights, but I do not have fuel. I was able to find that if I sent 12volt to the tan/wht wire that was coming off the alternator it would activate the fuel pump. My engine wiring harness was from the 89 car, is that what yours is from?

 

mine wiring harness is also a 89. i decided no to deal with it and am putting in a new 85' 305.