mjimenez1010

Hello guys I am new to this board and have done a lot of research on a build I am doing and everyone seems to have different opinion's on what the best option to run. Let me start out with im build a 1980 c1500 and dropping in a lq4 and 4l80e. I am building this truck to be a street truck and to drive and have fun. I am building up the lq4 to a 4inch stroke and fully forged internals. I haven't choose what cam I will be running yet but trying to find out what size turbos and fuel pump I should run. I am ordering a set of flowtech turbo headers that are up and forward. I am thinking about running twin 60 trim turbos not sure which turbos yet. My goal is to stay on 91 pump gas and daily drive aroun 600 horsepower. I do want the setup to handle more power if I want to turn it up and go to the track. my guess is to run 800 plus horse when the boost is turned up. Is this a realistic goal and if so what would be a good turbo fuel pump and injector set up? I have been looking at the 130 GPH Dominator inline twin holley fuel pump and Siemens deka 80lb injectors. Would this be a good setup?

sick02ss

iTrader: (3)

for 800hp your probably going to have to add meth. couple borg s366's and 2 wolbro 450's should get you there pretty easy your injectors will probably be close to being maxed

mjimenez1010

I figured if I turn it up I might have to add meth or do something. I'm more looking into a setup I can drive daily around 600 horse would be nice. Would the walbro 450s allow for the low pressure when driving around town? Also I figured 800-900 would be about where my injectors and all start being maxed out. I don't have a Huge budget on this but not looking to go cheap either want a decent priced good setup that can make these numbers. Are the walbro a better way to go then the holley? Also what other injectors are out there that might fit my need? for the turbo what options do I have Borg Werner precision. Im thinking about running the highram edelbrock intake and will run stock 317 heads ported and heavier springs and new valves.

need4speed069

iTrader: (3)

The " WALBRO E85 RACING FUEL PUMP F90000274 450LPH " is advertised to support up to 750hp , I will be using two of these but only running on one for normal driving and the second one will be activated by a hobbs switch when boost comes on. As far as injectors there are several web sites that you can simply plug in your numbers and gives you the injector size needed. For turbos twin S366's will be used. Also a Treadstone TRTT 1000hp intercooler. Good Luck with your build.

JoeNova

A few people have pushed a single Walbro 450 pump to 800whp.
The Holley fuel pump is just a pair of smaller Walbro pumps inside.

Deka 80s have been over 1000whp.

You don't need to port your heads or replace your intake manifold. The stock heads and intake setup have been ~1200 HP.

mjimenez1010

So what your saying is the holley really isn't worth going with? easier to do the walbro pumps? I just want to make it a nice driving truck along with some power as its going to be a fun truck and a truck to show off. The only reason i'm doing the intake is to make it look nice under the hood. Everyone says to port the heads why I was looking into it if they can push that much then ill keep them stock and just do spring and valve and freshen up the head. Thanks for all the help im hoping to get this motor set up soon.

JoeNova

Up to you on the pumps. The Holley dominator dual pumps are just Walbros inside.

If you need externals and don't want to break the bank, dual walbro 255s, Bosch 044s, or AEM 380s are cheaper than the Dominator and some flow more.

mjimenez1010

Awesome I appreciate the advise I will look into the other pumps!