The previous thread reminded me. I'm kicking myself for not doing the 6.4 so looking to beef up the power a bit.
Putting a D60 in it now (the original issue with the 6.4 was that I didn't want to spend money upgrading the axle. Sooo.... any recommendations on superchargers?

 

Pretty sure the OEM fuel system in a JK wont support a hemi AND forced induction...

 

What do you mean?

 

Your fuel pump is designed to feed enough fuel for a 3.8 or 3.6 depending on your model year. Upgrading to a 5.7 requires more fuel and adding forced induction on top of that requires even more.

Obviously your current fuel pump has some bandwidth to support a 5.7 but it wont support a 5.7 with a blower.

 

Guess I'll check out upgrading the fuel pump :-)

 

By the way if u do boost it run 2 walbro 255's great pumps or if ur not trying to get a ton of power one would do. I'd run e-85 if ur gonna boost it!! Sent from my Obama phone using JK-Forum

 

Walbro wont fit into the stock housing. Ask me how I know

And yes e-85 is awesome with boost. Again ask me how I know

 

For those of us in the world who can't get e85 look at the Snow methanol injection kit . You can a lot for times add an inline booster pump. I can't give you specifics on your application but people do it in other vehicles all the time.

 

Burnsville supercharges 5.7s all the time. Call them and ask if you need to upgrade the fuel pump, and see what supercharger they're using.

 

Well I know I fed a 2500 HP engine for 12 hours on the dyno with a little Mallory 140. Worked like a champ and we were burning real close to 2 GPM testing. They are a little pricy, around $250 or so is what I remember paying. I definitely would recommend one of these, bulletproof and ready to run all day and all night.

It will supply the volume, and a 6.4 won't eat enough fuel to worry about pressure.