Sevex

So I am in the process of collecting parts to finish my fuel system in my 2000 Silverado with a turbo 5.3

I am hoping to make around 750-800hp all said and done and want to make sure I will have enough fuel as I don't want to run into issues.

I just purchased an 05 tank and bucket for cheap so I can fit dual 450's without hacking the bucket. But now my question is if stock lines and filter will be capable of supporting dual 450s at 800hp or if I should I just plan on running a -8 line to the front and use stock feed as a return? If using stock feed as a return what are you guys doing about the stock fuel filter?

Right now my fuel system is as follows:

05 tank and bucket
Dual 450's
Edelbrock proflo rails fed into the back of one with a -8an crossover
Aeromotive 13129 reg.

Also since this reg only uses -6 fittings should I just run -6 out of the rail to the reg? Or should I uses -8 from pump to rails to reg with just the -6 return?

Thanks

lsxperformance

iTrader: (2)

850 crank or wheel hp? I've done -6 line 1000hp on e85. If you running corn you have to run a flex fuel filter and ya you can use factory feed as a feed or a return. Whatever works I'd try to make your feed and return same size tho so the regulator can do its job more effectively. When your just cruising around.. Hope that helps

GOOCHMAN

i am single 450 -8/-6 return billet 100mic filter 60lb injectors a1000 reg 91 and meth well in your power range turned up 43lbs base 1:1


I was on single 450 in tank 6lbs stock line and filter returnless nnbs rail
it was hard to tune because my pressure was high and not 1:1 with boost but my fuel was there never got out of the 11.2 11.4 range wot

so I would run your setup like mine it was easy ran a -8 fitting from stock outlet -8 to reg -8 to rail returned out of the bottom of the reg -6 to the top of the tank drilled a hole and ran a billet fuel bulk head I have no leaks and no fuel starve issue what so ever

are you wanting to run e85 is the only reason I see to need 2 450's I am on 91 in the Midwest with 60's and meth and my injectors are at like 40%dtyc

Sevex

It will be on pump 91 and water/meth as we cannot get e85 anywhere around here

I would like to do 800whp

I just want to make sure that I have enough fuel, I have heard that a single 450 will support 750 on gas with no issues, I just wanted to be positive that I never run out of fuel.

Injectors are Siemens Deka 80's

GMCtrk

iTrader: (27)

Let's just put it like this...if you think you're the first to do something, you're probably not.

Sevex

I think I remember you trying to run dual 450's on stock lines? How did it work?

GMCtrk

iTrader: (27)

the stock feed line and filter are fine.

The stock return line is a restriction.

I've already priced out all the fittings and line for -8 return from my Aeromotive regulator back to the tank and it's going to be around $200.

Sevex

Ok well I guess I had better just do a -8 feed and use stock feed as a return , then there is no question

GMCtrk

iTrader: (27)

I would recommend -8 feed and return. sto