Fuel pump???'s

68 Coop · #1 (**permalink**) 07-19-2005, 03:43 AM

I'm having some problems keeping pressure on the lines from the pump to carb side I think. Should I go with a 5 psi electric fuel pump for a daily driver??? I was told I did not need one awhile back, but this will be the 2nd mech pump in less than 1.5 years. Any comments or suggestions will be greatly appreciated.

Ta Jay · #2 (**permalink**) 07-19-2005, 03:50 AM

friend of mine is usually runs 7-8 psi on his 347, and i kno it can go higher. what size r you using now?

68 Coop · #3 (**permalink**) 07-19-2005, 04:08 AM

Sorry, but I'm confused on what you mean exactly???

WishIHadACamaro · #4 (**permalink**) 07-19-2005, 06:11 PM

Wheres "The Brad" , im sure someone highly qualified in giving you a good answer will see this in a bit and respond.

:smt045

ChevyGSX · #5 (**permalink**) 07-19-2005, 10:22 PM

i went with a holley electric fuel pump, and ran it at 7 psi. an old school engine like yours needs no more than that. if you had maybe 450 to 500 hp you might need to go more, but i wouldn't. i got about 350 hp, and it is fine.

My mom's chevelle with a stock 283 has the same pump i do, at 6 psi, and it is fine. just make sure you mount it away from your exhaust, (oops, i did that!).

hope this helps.

P.S. this will be fine for a daily driver, my Duece is exaclty that

ta12sec · #6 (**permalink**) 07-19-2005, 11:30 PM

i belive by size jay mean how much volume x psi + x units per hour
ie: gallons per hour litreers per hour ect

68 Coop · #7 (**permalink**) 08-10-2005, 01:47 AM

OK, thanks everyone. I have a in-line regulator installed already, set at 5psi. I was told, that is about all an Edel really likes. So, I figured if I get the 5psi pump, I can eliminate the reg at the same time, and go 3/8 line from tank to carb. Just to update the situation, the car starts, runs and holds pressure now. Strange, but it almost acted like it was vapor locked for 2 days straight. I don't know what happened, but it is OK now. :smt025