6cyl to 8 cyl fuel pump question

[Chevy nutcase]

Originally Posted by Steeveedee

The return line was implemented to help keep the pump from vapor lock by recirculating fuel as a "coolant". A recirculating pump will not have any lower pressure necessarily than a non-recirc type. I've run a stock (no recirc line) pump on Pontiacs all the way to 400 HP with no issues. I had a Le Mans with a RA III that could get to 260° idling in traffic without vapor locking. Of course, that was back in the '70s. Alcohol in the fuel may make a difference.

Luckily I have a gas station that sells ethanol free gas 5 min from my house