Fuel pump help needed

[stepinwolf]

I recently sold my 502, and the new owner wants me to recommend an electric fuel pump that he might use. My problem ( I'm old school ) is that I never used, or purchased one myself, and every manfacturer who is advertising them, swears theirs are the best, and the only ones I should be buying, ya right :eyerole .

I tried searching the archives, but with so much material, I will be old before I find enough time to figure it all out. The pump will be used in a low performance street cruiser, a 4000 lbs car, so I'm not looking for a high capacity , gazillion gallons per hour type of thing, just something basic, that will run the engine, and not force him to take out another mortgage.

I do appreaciate the time some of you will take to respond.

Stepinwolf

 

[67HEAVEN]

Honestly, I think I just got a fluke when I bought my first Holley. The replacement is working just fine and Holley covered me.

I'd buy one again. Holley 12-802-1 Electric Fuel Pump & Flow Regulator.

 

[Z28Canuck]

Honestly, I think I just got a fluke when I bought my first Holley. The replacement is working just fine and Holley covered me.

I'd buy one again. Holley 12-802-1 Electric Fuel Pump & Flow Regulator.

Bob
Off the top of my head: Didn't you figure you averaged close to 17 or 18 miles to the gallon on the BG trip? I know it was a lot better than the 10 or so you were expecting it to be!

 

[67HEAVEN]

Bob
Off the top of my head: Didn't you figure you averaged close to 17 or 18 miles to the gallon on the BG trip? I know it was a lot better than the 10 or so you were expecting it to be!

16.9 per Imperial gallon. I always try to buy Imperial gallons. I get much better mileage.

 

[stepinwolf]

Honestly, I think I just got a fluke when I bought my first Holley. The replacement is working just fine and Holley covered me.

I'd buy one again. Holley 12-802-1 Electric Fuel Pump & Flow Regulator.

I just had a look at the pump, and it look's good, with a price that we can live with. The only thing I am wondering about is the pressure for a 502 that is fuel injected. The ram jet version also uses a fuel return line, so I would expect that the pump needed, would have to have more then 7 lbs of pressure.

I don't have the engine here anymore, so the specs are not available to me.

Stepinwolf

 

[Z28Canuck]

16.9 per Imperial gallon. I always try to buy Imperial gallons. I get much better mileage.

I was close! The regular unleaded gas in East Toronto this morning was $102.3 per litre!!! I got 91 octance last night for $1.117/l at dinner time (Regular was $98.2/l )!

And so Mark doesn't jump in on your mileage.... the 16.9 mpig was on Heavens' own steam, NO pushing from the support vehicle! :L

 

[JohnZ]

I just had a look at the pump, and it look's good, with a price that we can live with. The only thing I am wondering about is the pressure for a 502 that is fuel injected. The ram jet version also uses a fuel return line, so I would expect that the pump needed, would have to have more then 7 lbs of pressure.

I don't have the engine here anymore, so the specs are not available to me.

Stepinwolf

Bob, fuel injection changes the picture entirely; I don't have the RamJet specs either, but I think that system requires around 40-50 psi or so, just like almost all new cars do. Don't know offhand if it has a pressure regulator on the fuel rail and a return line to the tank or if it's a "deadhead" system with no return line.

 

[stepinwolf]

Bob, fuel injection changes the picture entirely; I don't have the RamJet specs either, but I think that system requires around 40-50 psi or so, just like almost all new cars do. Don't know offhand if it has a pressure regulator on the fuel rail and a return line to the tank or if it's a "deadhead" system with no return line.

John, I remember having read that the installation would need a return line, but it's the necessary fuel pressure I am not sure of.



Stepinwolf

 

[magicv8]

Purolator make high and low pressure pumps that are small and relatively (to Holley) inexpensive. I have been using a very dependable (double the GM spec flow rate) low pressure purolator for years. The pic shows it sitting on a rear/trans motor mount.

 

[tigernut]

As a side thought, will the 502 ram jet crate engine fit under the hood of a 66 vette (with 67 big block hood)? Just curious.


Doug

 

[67HEAVEN]

As a side thought, will the 502 ram jet crate engine fit under the hood of a 66 vette (with 67 big block hood)? Just curious.


Doug

Not without playing with the fiberglass.

 

[stepinwolf]

As a side thought, will the 502 ram jet crate engine fit under the hood of a 66 vette (with 67 big block hood)? Just curious.


Doug

Not without mods to the hood, or to the plenum. However there is a fellow in N.C. who does the complete labour for around 800$, and it will then fit under a 65-67 big block hood, with out clearance problems.

Stepinwolf

 

[bossvette]

Fuel injection does change the picture, here is a picture of my 76 tank after a "TPI unit" was installed:

the conversion was done on a new replacement tank from an earlier C3 (the 76 had a bladder tank) by Rock Valley Antiques and was @$400. Since FI doesn't have a bowl like a carb fuel slosh and starvation is an issue and the OEMs have baffled tanks to combat this but older tanks don't. The rock Valley pump uniy has a canister around the pick up to keep the pump covered with fuel.
a real good book that deals with FI conversions can be found here from Summit it is well worth the read.
ps you will have to scroll down a ways to find the book "Chevrolet TBI and TPI engine swapping" summit part # jtr-tpi