3 port fuel pump

3 port fuel pump mouted on Olds 455 The smaller port is the return line headed to the fuel tank. The port has a restriction in it to limit the amount of actual fuel returned to the tank. By plumbing this port you will help avoid vapor lock

Make sure you check out my personal Album at  http://www.gmcmhphotos.com/photos/g5953-3-port-fuel-pump-2c-filter-2c-and-hot-fuel.html outlining the 3 port fuel pump and outher strategies used to address hot fuel issues