Hey guys I am new here. I have been doing several searches and getting alot of answers for my eng swap. i am putting a 90 305 tbi out of a caprice in my jeep and I have completely rewired the motor off of the info that you guys have givent me and I am sure that there will lots more info gathered when it comes time to do performance modifications this winter after I work out the rest of the bugs with this build. Anyway to my question. i nned to know which is the fuel feed line and the fuel return line on the tbi. I know there are 2 ports. when you are facing the motor from the front there is one on the right back of the carb and one on the left back of the carb. one should be a supply line and the other should be a return but which is which .

 

From the front of the engine, back right is supply, back left is return. Supply should also be a little larger than the return side.

 

thanks alot I am geting ready to get this done. I appreciate the help