408 needs an electric fuel pump...

[mustangmarty]

My mechanical fuel pump has been pumping gasoline into my oil. My guess is that this is a very BAD thing, and I never want it to happen again. Therefore, I want to convert over to an electric fuel pump.

For those who are already running an electric fuel pump on their 408, which pump did you get?

Where did you mount it?

The part store has a Mr. Gasket electric fuel pump that is rated at 4-7 psi. Is this enough to feed my 408?

 

[honkey84]

No. I would go with a Holley Blue or a Mallory adjustable pressure pump. I would go with a nice item instead of a cheap item. Just because this is a nice motor and you want to protect your investment.

 

[76Broncofromhell]

Electric pumps are not my favorite. I've been using a mechanical one on my hot 408 stroker now for 3 years and have no problems. Electric pumps will not gain you anything except a headache.

Get one for a 1969 351W Mach 1 Mustang and you will get the right feed rate. Mine ran me about $35.

 

[SaddleUp]

From what I understand the Carter Low Pressure pumps work very well for carbureted engines. 20 years ago they were a PITA but have come a long way over the last 20 years and are quite reliable now. In my experience they have proven to be more reliable than any mechanical pump I've run. (I've changed a lot of mechanical pumps that failed in the last 20 years)

 

[2badrotties]

The one thing an electric pump will help is vapor lock in the summer. I like them. There are some pretty good mechanical pumps on the market. Holley makes a nice one, carter has a really good one. If you go to electric, check out a Mallory 110. Sooooo quiet and very reliable.

 

[JWMcCrary]

I'm running a Carter on my 393, mounted above the rear axle on the frame, no problems.

 

[mustangmarty]

That is exactly what I had on it. I believe it was a carter from O'reilly's for about somewhere between 35 and 40 bucks. I just don't want to take a chance on gas getting into the oil ever again.

 

[mustangmarty]

I'm running a Carter on my 393, mounted above the rear axle on the frame, no problems.

Wouldn't I have to put the pump between the selector valve and the carburetor? I was thinking somewhere under the floorboard under the driver's seat. How are you putting yours above the rear axle?

 

[JWMcCrary]

Wouldn't I have to put the pump between the selector valve and the carburetor? I was thinking somewhere under the floorboard under the driver's seat. How are you putting yours above the rear axle?

I'm using an electric switching valve, I have it mounted to the frame right behind the pump. Both tanks plumbed to the valve then the pump..then on to the engine bay. Sorry I don't have any pics.

 

[broncnaz]

Go electric I had my carter P4070 on my 73 for over 25 years It was still pumping(just not as good as new but would keep the fuel bowls full at 75mph) when I replaced it with a brand new P4070. Now I use it for a backup. Heres a pic of mine its a little forward of the rear axle but it fits nicely on the frame and defintely run a filter before the pump. basically its piped in on the outet side of the fuel selector then out to the carb. The other good thing about a electic pump is you can install a switch to turn it off good theft protection or use it to fill your lawn mower.

 

[mustangmarty]

Go electric I had my carter P4070 on my 73 for over 25 years It was still pumping(just not as good as new but would keep the fuel bowls full at 75mph) when I replaced it with a brand new P4070. Now I use it for a backup. Heres a pic of mine its a little forward of the rear axle but it fits nicely on the frame and defintely run a filter before the pump. basically its piped in on the outet side of the fuel selector then out to the carb. The other good thing about a electic pump is you can install a switch to turn it off good theft protection or use it to fill your lawn mower.

I noticed that you're using this pump wiht a 302. Do you think that the P4070 will be enough to feed a 750 carbed 408 Windsor when I stick my foot in it? ;D ?:? ;D

 

[broncnaz]

Shouldnt be a problem unless your running 6000+ rpm all the time. If you plan on that then carter has other pumps that put out a little more. The P4070 puts out 4-6 psi I've never had any problems with it on dont need a regulator as some of the higher output pumps do. If your worried about it you could run a P4594 that puts out 7 psi although both pumps put out the same 72 GPH they also sell someothers that put out 100 GPH but require fuel regulators. Personnaly I'd stick with the P4070 for a 4x4.

 

[RajinCajun]

Holley Blue with the regulator that comes with it. I have personally seen on one on a 454 roller motor pushing some serious power, pulling the front wheels on an old Chevelle at the drag strip... I had one on my drag car with a healthy 350 with alum heads and large tube headers, it would hold 7psi at the regulator all the time, even when mashing the skinney petal and watching the carb dump fuel like a toilet...LOL!! If I remember right the blue is rated at 14 psi, and that give you extra fuel at the regulator if needed...