Quote: My plan is to loop off at the sending unit, build a bracket that bolts to the tie down attachments (E body) that mounts a 110 GPH electric pump and use the stock 3/8 fuel line up to the HP mechanical pump. All the repro stainless steel fuel lines will be uncut and if I have to run the electric pump all the time that's what I'll do but it sounds like I'll be able to just use it for a cold start and maybe when using WOT in 3rd and 4th. I'll let everyone know after I test it. I'll tie strap a fuel pressure gauge to the cowl when I first install the extra pump.
Sheldon
In general the electric pump will not flow fuel when turned off. The mechanical pump will not be able to "suck" through it. An electric pump bypass line with check valve is needed to allow the engine to operate with electric pump off. I used a brass check valve from the hardware store on my truck... more compact automotive type valves are available from Summit and others.
Sorry to disagree, but the mech pump WILL pull through an elec pump. I have a Holley pump mounted by the tank that only runs when switched on. 99% of time the mech pump runs the Cuda pulling fuel through the elec pump. Been that way for years now. And this is the second or third car I have plumbed like that.
