Ill guess Ill throw mine in...

This is for my 99. I have an 07 tank (bigger top opening), custom made stock bucket with 2 denso 1020 pumps and a -8 bulkhead fitting for the feed, I use the original 3/8" feed line as the return. -8 hose all the way to the rails and -6 return to the bucket from the regulator. Nasty performance billet rails, and FIC 80# (at 3 bar) injectors. The second fuel pump is set on a 2psi hobbs switch.

I havent had a chance to really push this system so I dont know what it will top out at. My guess is close to 1000rhp

 

How do you regulate the pressure on the second pump...

 

The stock regulator regulates pressure at the rails, I just have 2 feeds coming in. My second pump comes on at 7-8psi, so by that time it had a lot of demand and doesn't over power the stock return.

 

Im searching for the upper limit of an aeromotive 340 pump. Havent found it yet

Nice way to drop $1000


Installed


For those thinking of dual pumps


How to correctly wire in a dual pump setup with a hobbs switch
Red is pin 30, Gray 87, Green 86, Black 85, 87a not used

 

Bump. Good info in this thread. I'm trying to find out about the Denso 1020. I haven't read anything bad about it, yet it isn't very common. Why?

What year trucks have factory return setups? Are the factory return setups desirable?

 

I think a lot of people just dont know about it or disregard it automatically for the more popular walbro, bosch or new aeromotive pump. At the time, it was either walbro or bosch and I found these, no one else had them and the numbers looked good so I figured why not. Now I would probably go with 2 aeromotive 340s though. I wanted something bigger than dual walbros but dont think dual bosch pumps will fit in the stock bucket.

The data ive found, the densos are somewhere between the walbros and bosch pumps as far as flow vs pressure, pretty close to the aeromotives actually. Unfortunately they are probably the most power hungry pumps and pull more current than the others. I have 10ga wire to each pump so im not worried about that.

99-02 had return style fuel systems. I dont particularly like it because the pump bucket is smaller and much harder to work with. The returnless tanks have a bigger top hole and bigger bucket, so its easier to fit more pumps. I dont like inline pumps either, but thats just me.

 

I'm planning my turbo setup for my 2000 Silverado. I'm going to be running a 76mm Turbonetics turbo and 60# injectors. I haven't figured out what I'll need to do for fuel.

How much fuel can the stock fuel line flow? How much horsepower can it support? Will one Denso 1020 be enough for me? Or would I need to look into a dual pump setup?

 

I'm sure everyone has seen this, but here's some info on the Denso.
NEW, The Best in tank fuel pump, denso kyosan 390lph @ 40psi - Corvette Forum

 

How much boost do you plan to run? e85? Single pump will support quite a bit.

 

No on the E85. There's only 1 gas station around here that sells it.

I'm not sure how much boost I'll run. What I'm thinking about doing is pulling the 5.3 and regapping the top ring, upgrading the connecting rod bolts, and putting in head studs. At the same time, putting in an LS6 cam, springs and LS7 lifters. Hell, I can get ahold of some 317 heads and swap those on to lower my compression ratio if you think it would be best.

This will be the first time I've done anything like this so I'm still learning. I'm going to start out with 5lbs of boost and see how far I can go I guess.