What size fuel pump?

6T9PONY · 10-18-2001, 06:46 PM

We're dropping my 351W out of my coupe into my fastback here pretty soon. And I'm going to put an electric fuel pump on it because it was starving out pretty bad with the stock one. Especially after the rear end/shift kit intall.

I'm going with a Holley Electric Pump from Summit. Question is: There are two I'm looking at, and I don't know which one will be right for me. One is 70 gph at 9 psi, or 110 gph free flow, it has pressure preset at 14 psi. The other is 67 gph at 5 psi or 97 gph free flow, it has pressure preset at 7 psi.

I have stock heads, that don't flow worth sh!t (1.84/154 valves), but I will be putting Edelbrock Performer RPM heads on sometime in the future. I will probably have them ported/polished when I purchase them also.

Any opinions? TIA.

------------------
Previously "BennyBoy"
'69 Coupe with 351W-I rolled it 8/8
Edelbrock RPM intake, Edelbrock RPM cam, Edelbrock 750 cfm carb, Hedman headers, 2 1/2" pipe, glasspacks, C4: shift kit, 9" Currie: Trac-Lok 3.70s, 290hp-stock heads

Starting Project "2ND COMING": 1969 Fastback

73 Mustang Boy · 10-18-2001, 07:03 PM

I would go with the smaller pump. I know you would have to use a regulator with the big pump and may even have to with the smaller one. I would call Edlebrock first and ask what the max. fuel preasure they recomend with your carb is. I use an Edlebrock mechanical fuel pump and it works great.

73 Mustang Boy · 10-18-2001, 07:05 PM

I would go with the smaller pump. I know you would have to use a regulator with the big pump and may even have to with the smaller one. I would call Edlebrock first and ask what the max. fuel preasure they recomend with your carb is. I use an Edlebrock mechanical fuel pump and it works great.

------------------
73 coupe, 351W, GT-40 heads, edlebrock 750, offenhauser intake, .488 lift cam, 2.5 exhaust, 2 chamber flowmasters, blah, blah, blah...

73 Mustang Boy · 10-18-2001, 07:07 PM

Sorry, I posted same reply twice I was trying to get my sig. to work

------------------
73 coupe, 351W, GT-40 heads, edlebrock 750, offenhauser intake, .488 lift cam, 2.5 exhaust, 2 chamber flowmasters, blah, blah, blah...

6T9PONY · 10-18-2001, 09:52 PM

I was going to use that Edelbrock mechanical pump. But I figure while I'm bothering, I should get an electric pump because my engine runs a tad on the warm side. I really need a 3-row radiator...hehe...

Any other recommendations? TIA.

------------------
Previously "BennyBoy"
'69 Coupe with 351W-I rolled it 8/8
Edelbrock RPM intake, Edelbrock RPM cam, Edelbrock 750 cfm carb, Hedman headers, 2 1/2" pipe, glasspacks, C4: shift kit, 9" Currie: Trac-Lok 3.70s, 290hp-stock heads

Starting Project "2ND COMING": 1969 Fastback

73 Mustang Boy · 10-20-2001, 11:20 AM

I would get the mechanical pump, it wont make that big of a difference temp wise. that eletric pump is going to draw alot of amps too. I you do use the eletric pump I would definatley get a regulator.

------------------
73 coupe, 351W, GT-40 heads, edlebrock 750, offenhauser intake, .488 lift cam, 2.5 exhaust, 2 chamber flowmasters, blah, blah, blah...

6T9PONY · 10-20-2001, 06:58 PM

That electric pump has a built in self regulator. I might just go with that Edelbrock pump. Probably a lot easier too, huh?

------------------
Previously "BennyBoy"
'69 Coupe with 351W-I rolled it 8/8
Edelbrock RPM intake, Edelbrock RPM cam, Edelbrock 750 cfm carb, Hedman headers, 2 1/2" pipe, glasspacks, C4: shift kit, 9" Currie: Trac-Lok 3.70s, 290hp-stock heads

Starting Project "2ND COMING": 1969 Fastback

10-18-2001, 06:46 PM	#1
6T9PONY All about the Windsor. Join Date: Feb 2000 Posts: 2,052	What size fuel pump? We're dropping my 351W out of my coupe into my fastback here pretty soon. And I'm going to put an electric fuel pump on it because it was starving out pretty bad with the stock one. Especially after the rear end/shift kit intall. I'm going with a Holley Electric Pump from Summit. Question is: There are two I'm looking at, and I don't know which one will be right for me. One is 70 gph at 9 psi, or 110 gph free flow, it has pressure preset at 14 psi. The other is 67 gph at 5 psi or 97 gph free flow, it has pressure preset at 7 psi. I have stock heads, that don't flow worth sh!t (1.84/154 valves), but I will be putting Edelbrock Performer RPM heads on sometime in the future. I will probably have them ported/polished when I purchase them also. Any opinions? TIA. ------------------ Previously "BennyBoy" '69 Coupe with 351W-I rolled it 8/8 Edelbrock RPM intake, Edelbrock RPM cam, Edelbrock 750 cfm carb, Hedman headers, 2 1/2" pipe, glasspacks, C4: shift kit, 9" Currie: Trac-Lok 3.70s, 290hp-stock heads Starting Project "2ND COMING": 1969 Fastback

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
fuel pump not running !???	whitepony	Windsor Power	3	04-28-2004 07:26 PM
Fuel Pump?	Dean Malaxos	Small Ponies	3	02-09-2004 02:52 PM
94 GT fuel pump relay	phantom74	Windsor Power	0	02-01-2004 07:14 PM
Fuel pump relay questions	Big Bopper	Windsor Power	1	11-10-2002 10:20 PM
91 bronco 302 fuel pump question	jerrys84	Windsor Power	1	10-18-2002 11:50 AM

10-18-2001, 07:03 PM	#2
73 Mustang Boy Registered Member Join Date: Aug 2001 Location: Georgia Posts: 84	I would go with the smaller pump. I know you would have to use a regulator with the big pump and may even have to with the smaller one. I would call Edlebrock first and ask what the max. fuel preasure they recomend with your carb is. I use an Edlebrock mechanical fuel pump and it works great.

10-18-2001, 07:05 PM	#3
73 Mustang Boy Registered Member Join Date: Aug 2001 Location: Georgia Posts: 84	I would go with the smaller pump. I know you would have to use a regulator with the big pump and may even have to with the smaller one. I would call Edlebrock first and ask what the max. fuel preasure they recomend with your carb is. I use an Edlebrock mechanical fuel pump and it works great. ------------------ 73 coupe, 351W, GT-40 heads, edlebrock 750, offenhauser intake, .488 lift cam, 2.5 exhaust, 2 chamber flowmasters, blah, blah, blah...

10-18-2001, 07:07 PM	#4
73 Mustang Boy Registered Member Join Date: Aug 2001 Location: Georgia Posts: 84	Sorry, I posted same reply twice I was trying to get my sig. to work ------------------ 73 coupe, 351W, GT-40 heads, edlebrock 750, offenhauser intake, .488 lift cam, 2.5 exhaust, 2 chamber flowmasters, blah, blah, blah...

10-18-2001, 09:52 PM	#5
6T9PONY All about the Windsor. Join Date: Feb 2000 Posts: 2,052	I was going to use that Edelbrock mechanical pump. But I figure while I'm bothering, I should get an electric pump because my engine runs a tad on the warm side. I really need a 3-row radiator...hehe... Any other recommendations? TIA. ------------------ Previously "BennyBoy" '69 Coupe with 351W-I rolled it 8/8 Edelbrock RPM intake, Edelbrock RPM cam, Edelbrock 750 cfm carb, Hedman headers, 2 1/2" pipe, glasspacks, C4: shift kit, 9" Currie: Trac-Lok 3.70s, 290hp-stock heads Starting Project "2ND COMING": 1969 Fastback

10-20-2001, 11:20 AM	#6
73 Mustang Boy Registered Member Join Date: Aug 2001 Location: Georgia Posts: 84	I would get the mechanical pump, it wont make that big of a difference temp wise. that eletric pump is going to draw alot of amps too. I you do use the eletric pump I would definatley get a regulator. ------------------ 73 coupe, 351W, GT-40 heads, edlebrock 750, offenhauser intake, .488 lift cam, 2.5 exhaust, 2 chamber flowmasters, blah, blah, blah...

10-20-2001, 06:58 PM	#7
6T9PONY All about the Windsor. Join Date: Feb 2000 Posts: 2,052	That electric pump has a built in self regulator. I might just go with that Edelbrock pump. Probably a lot easier too, huh? ------------------ Previously "BennyBoy" '69 Coupe with 351W-I rolled it 8/8 Edelbrock RPM intake, Edelbrock RPM cam, Edelbrock 750 cfm carb, Hedman headers, 2 1/2" pipe, glasspacks, C4: shift kit, 9" Currie: Trac-Lok 3.70s, 290hp-stock heads Starting Project "2ND COMING": 1969 Fastback