Not much, but if you have a flex fuel truck it can handle a little bit more.

 

A few guys have pushed flex fuel pumps to around 600hp. If you keep the boost below 9-10lbs then you should be okay just as long as your not looking for huge numbers. Keep it in moderation & keep it maintained and it'll be good.

 

My truck has always been my dd. From 16psi on E85 to 12 on 91/meth inj. Right now runs mid 10's on ca 91 on my dd tune. Main thing is tune, and meth for boost past 10-12 to be safe.

 

its not a flex fuel truck, regular fuel pump good for 8lbs?

 

Id get at least a walbro 255 just to be safe.

 

No way. Go with a walbro 255, you can put one in-tank for around $120 and be good to around 550whp.

 

then just worry how long my trans is gonna hold out right. lol

 

haha trans is right
I did a kb kit and ran 7psi for 3 days on my dd, then I needed a new trans......4l80 and 10 psi for 40k miles now and its good. I daily drive mine and love it! but like everyone says tune needs to be good, and keep the boost around 7-10 and add meth if you plan on playing around on the weekends much. I would def add a walbro 255 cause 150 is much better than replacing a motor due to lack of fuel. I'm at 550/600 with a single 255 and don't lose any pressure on 60# fast injectors.

 

I'm at 550/600 with a single 255 and don't lose any pressure on 60# fast injectors.


Good info to know...

 

I agree, good info for sure. I'll be running a 255 and 60#ers myself.