AN-6 or -8 for My Fuel System (SBF)

[Bob Bender]

Originally Posted by FED 387

get rid of the BLUE Holley Reg to start with use an Aeromotive/Weldon/MagnaFuel or something similar---use AN -10 from tank to regulator and then AN-8 from reg to carb-- you can get fittings for the carb that are AN -8 or you might need to use an adapter or fabricate one if need be---ya got a long run from the back of the car lotsa bends and turns in the hose and when the car launches the pump must overcome the tendency for the fuel to want to rush to the rear instead of going forward to the carb---don't cut yourself short as others have said do it right the first time---my 2 cents--FED387

Thats what I have !!

[John Lang]

Originally Posted by Bob Bender

Thats what I have !!

My thoughts are the same as Mr. Bender, and FED ! Bigger is better, to a degree ! Just don't go any smaller !..John Lang

[FireSale]

Lots of good ideas.

This will be a drive it to the strip car for the first year (I dumped my trailer budget under the hood), so I may split the difference. -10 line isn't that much more than -8 and will handle any upgrade, so maybe I'll plumb it to the carb with -10 but keep the -8 QF pump with adapters to attach to the lines. It would be the easiest part to swap out for a bigger pump in the future and would have resale value.

The only Magnafuel pump in my price range now is the 275 and it's dosen't have a lot over the QF.

My fuel cell will be the 15 gal. aluminum from Summit with a rear sump. It should get me the 40 miles to the track... ;-)

Am I missing anything here?

Dale

[1965]

I am running a 10 from tank thru a 10 large filter to pump and then 10 filter small filter then 10 to regulator mounted on a fuel log with a return of a 10. used all aeromotive a2000 pump and there regulator and fuel log. expensive but figured it would handle any motor comb I want to run

[Rory McNeil]

Maybe I`m just cheap & stupid, but a lot of these recommendations seem like overkill to me. First off, the origional poster said he is using a 780 Holley, which has 2 large float bowls, and 2 needle and seat assemblies, so it is not as hard to keep the carb full, compared to a Q Jet.
Both my cars have Holley "Blue" pumps and regulators, and have been reliable and adequate for many years.
My 427 FE Ford bracket car has a 780 Holley and runs 9.9-10.0s at 132MPH with the same blue Holley setup and 1/2" hard line since I started running the car over 25 years ago, and my Stocker 85 Mustang has had the same blue pump and reg, with 3/8" hard line and stock gas tank for 11 years. This setup has been fine even with my bracket engine, which has gone 10.3 @128 MPH with a Holley 650, and was obviously more than adequate for the much slower Stocker engine. I`m not saying that spending over a grand on a fuel system is a bad thing, if you don`t mind spending the $$$$, but at least with a Holley carb, there are cheaper setups that will work

[Adger Smith]

Take the jets in the carb + the PVCR and figure the total area.
Then take the sizes of the needle & seats. Figure that area.
The two total areas should be close to equal.
Then take a Blue Holley Regulator apart and measure the size of the hole in it. Then figure the area. But wait to get the actual area you need to subtract the area of the pin from the diaphragm that works through the hole & pushes on the check ball. (that pin is a restriction) The flow of you system should more than match what you are flowing at the carb. Area is not the real way to figure it, but is the easy way & is close enough for our use. If it isn't right it could cause float levels to change and down track performance be affected. BTW check the size of the pump inside, too.

[Chad Rhodes]

I've never seen too much fuel system slow a car down.