MAX HP w/ 39# Injectors
#1
MAX HP w/ 39# Injectors
So just like the heading says, anyone have any Idea what the max HP you can get with a 5.4 3v with 39# injectors? My truck is getting dyno tuned tomorrow. I have the STS turbo kit with a 62mm turbo. Just installed new rods pistons and crank and the dual fuel pump set up from JDM. I want to run about 18lb's of boost, but I'm thinking that my injectors are going to be the defining factor on that. BTW gt500 injectors wont work with a 3v
#3
I'd say a bit more than 500rwhp. I ran around 535rwhp with 42s on a 4.6 cobra motor with a vortech and twin pumps. Since you are turbo'd, I'd say you can run even more because the motor is not wasting hp spinning the blower on top of its own power. I'd try the 39's because they are OEM before I jump to 60's. Big injectors don't always run as smooth as OEM injectors. The bigger injectors have really improved over the years though.
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The gt500 injectors were too short. Thats what my mechanic told me when he tried to install them. The fuel pump setup from JDM are (and this is what my mechanic with a 700 hp twin turbo 4.6 3v said) is basically just the gt500 setup with a different fuel hat and relays. And its about $1,300. Pretty damned over priced if you ask me. But hey, they have the monopoly, and they developed it for the saleen f-150's. Supposedly its good for about 800 ponies.
Right now everything is installed, and the truck runs fine (We even managed a jury rigged cmc delete). Just waiting on the dyno guy to tune it. He's had my truck for about a week and a half now. I'm about to go on a murderous rampage. I haven't had my truck since February, and I'm going to sit in my apartment and pout until I get it back. I have my nitrous express kit and my HID's sitting in my room waiting to get installed too. I'm pretty pissed.
Right now everything is installed, and the truck runs fine (We even managed a jury rigged cmc delete). Just waiting on the dyno guy to tune it. He's had my truck for about a week and a half now. I'm about to go on a murderous rampage. I haven't had my truck since February, and I'm going to sit in my apartment and pout until I get it back. I have my nitrous express kit and my HID's sitting in my room waiting to get installed too. I'm pretty pissed.
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If you have a 04 truck, you don't even need to get the fuel pump set up I have. You can get one of the butt loads of lightning upgrade system that are out there. I think they run about 600 bucks if I'm not mistaken. The 05-08's have a return less fuel system.
I don't remember if it was crank or rwhp for the system.
I don't remember if it was crank or rwhp for the system.
#15
oh ok. I was just looking at your sig where it says you have an 04. I wish I could tell you how much HP I'm getting with the 39# ones. But I have no clue. I'm really tempted to flip this guy the bird and find a place in Atlanta to do my tuning. But its a biotch trying to find someone who well work on these trucks, or even knows what they are doing.