I have a 70' El Camino, currently running a mild 350. (Calif. car).... and soon to have a very healthy 383 stroker. The 5/16", tank to fuel pump line .... will be replaced with 3/8".
My questions are: (1) Will I be creating problems, (vapor lock, fuel pressure regulation) with the EEC system ... by using a Holly pump, (110gph) w/o a return port, and just blocking off the return line? Also, (2) Is there a high volume OEM type pump available ... that has a 3/8" inlet .. plus return port? Specifics are appreciated. Thanks