You could do it the right way and figure .5 pounds
per hour per HP to figure out what size pump you need
and add a bit more if you plan on more power

I agree! the Hemi in my challenger (Shaker hood), had vapor lock issues due to the ethanol laced pump gas around Reno, so a factory vapor separator install cured the issue, but not for long. The repop pushrod was short & took out the cam lobe, so electric pump was the fix. I got the Holley 150 gph gerotor design pump since it was super quite & didn't want the noise of the vane design blue pump. Worked fantastic & was super quiet. Same thing happened on my 383 mag, so I went with the Mallory gerotor pump & its even quieter & smaller than the holley. If you don't want the noise, try one of these.
http://www.summitracing.com/nv/parts/hly-12-150/overview/
or
http://www.summitracing.com/nv/parts/maa-5110fi/overview/

I had a round sump welded into the bottom of the stock tank and ran a #10 AN teflon flex line to the filter which was screwed into the inlet side of the pump, #8 hard line to the reg. up front I had the stock fuel pickup and sender out and had a #8 AN nipple welded into it so I could use it for the # 8 AN return line from the bypass on the pump, it worked well after I got the proper size fuel filter element(80 micron or bigger ) in the pre pump filter. I mounted the pump in the right rear corner behind the stock tank on the inner rear sub frame I made sure the bottom of the pump was level or slightly lower than the pump outlet was also , if I'm remebering correctly now

Thanks guys,
As always very informative!

Mikey

You do not need - 8 feed line (1/2"). The 3/8" you have is fine.

I run E85 (30% more fuel then gas), boost (horrible BSFC), and still make 800hp on - 8 feed.