E85 and my combo (looking for insight)

[Kryp2nitE]

i have a thread in engines that im planning out how my build will end up (not turbo ne more) 

basically im looking at something that will flow 40% (to be on the safe side) more fuel than your normal pump gas setup

hers the current combo:
74 30 over 440 block
850 holley 4160 carb with choke removed, brass floats swapped for nitrophyl (sp?)
torker 440 intake
motor home heads with oversized valves, port matched, and pocket ported
509 cam with stamped rockers (not stock) and dual springs
L2266 forged slugs (approx 8.88:1 CR with open chamber heads)
stock rods
10/10 cast crank

first off i need to start with an external electric pump that is approved for alcohol use

im wondering if 3/8 inch lines will support 40% more fuel than you usual street/strip 440 or do i need to goto a larger diameter (from what i can theorize on paper as long as i can keep the same pressure in the system i need to increase the diameter by 17.6% or to approx .441 inches) to move 40% more fuel thru the lines

but then comparing the classic holley blue to the holley black HLY-12-815-1 and the aeromotive S/S pump AEI-11203 the black flows 140gph vs the blue's 110 and the aeromotive chimes in a 150 boasting a possibly increase in pressure to a supported 16 psi vs either holleys 14

is this increase in flow a byproduct of alcohol use? do i need to worry about increasing the line size when using an alcohol pump?

any thing im overlooking?


looking to use alcohol for more than just social interactions
Chris

[Kryp2nitE]

25 replies and no one knows about alcohol-fuel cars?

[Troy]

25 replies and no one knows about alcohol-fuel cars?

Maybe that's because you thought you'd get more replies by putting it in the wrong section?

Troy

[Rolling_Thunder]

Well....    you can always run a 1/2" fuel line....    that should solve all this guesswork...     stainless steel would be my choice...   

[Chryco Psycho]

you want to use alcohol with 8.8:1 compression 
how do you intend to get it to burn ??
typical alcohol engines are int he 14:1 range

[Kryp2nitE]

8.8 is before the head milling, with E85 i think 10:1-10.5:1 is what i should shoot for and i think 60 off the heads should do it

but back to the question 

would just adding 1/2 fuel lines give me enough volume?
does a pump rated at 150gph really flow  ~40% more than one at 110?


ok heres the shortened version:




keep same psi in fuel system, upgrading to 1/2 fuel lines

or

keep 3/8 fuel lines and uprade to a pump that flows 150 gph rather than 110 gph


or should i do 1/2 fuel lines and the 150 Gph pump

[beedees]

You need to think about how you're going to get the fuel into the carb. as well as the volume. Needles and seats wont opass as much fuel ass your pump can deliver. A steady supply at a constant pressure is what you are after. Just my  .02