I have a 85 F-150 with a 5.8l HO with the factory Holley carb. I would like to change the intake and carb back to a 2bbl Motorcraft. Does anyone know which intake fits? I was told that the 5.8l HO is a small block

 

It is a small block I've got the same motor I can't help you on the intake but if you wanna sell that carb let ne know

 

Take a look at the fuel pump, if mounting bolts are vertical of each other, its a big block 351/400. If the mounting bolts are side by side then its the 351W or small block.

 

I've got the same motor I didn't know they made them as a big block I'm definitely goin to look at my fuel pump