1F fuel pump on a 2F?

[BigR]

Dose anyone out here know if I can use a fuel pump off a 1F on a 2F block? I am in the process of swapping out my 1F for a 2F in my 1970 FJ40. While the design of the 2F pump looks simpler and more reliable, it has an extra outlet for which I have no line. I expect it is a fuel return line buy I’m not sure where to terminate it

 

[Pin_Head]

Sure. 2Fs came stock with the screwed-on top style pump till about 79 and after that they were the the stamped cap 3 line model. You can use either style. The extra line is just a vapor vent, so no connection needed. Just remember to remove the phenolic spacer for the earlier type.