My 70 383 Mag was vapor locking & starving for fuel due to a short mechanical pushrod, so I installed a Mallory Gerotor elec pump (110gph)
& it was the best choice I coulda made. Super quiet & can't even hear it
with the motor running. I had a Holley Gerotor pump on my Hemi Challenger & it was so much quieter than the vane driven blue pumps, but not as quiet as this Mallory. They make a 140 gph version, too.
http://www.summitracing.com/nv/parts/maa-4110