4.7 vs 5.7 fuel system

[05christj]

So I was wondering how the 4.7's fuel system measures up to the 5.7's.

My theory is the 4.7 will flow slightly more fuel than the 5.7. I came up with this purely based on the fact that the 4.7 will allow you to run E85 which requires about 30% more fuel.

If the 4.7 did not run E85 would the 5.7 need 30% more fuel?

I did a qick Google search but could not find specific information.

 

[Hootbro]

You are asking a goofy question. 30% more fuel for what? To make up the lost MPG's for the use of E85?

 

[Kotta390]

You are asking a goofy question. 30% more fuel for what? To make up the lost MPG's for the use of E85?

30% more to get the same BTUs out of e85 so the engine doesn't run sluggish.


To the OP, why are you so interested? Do you have a build going on that requires the same if not more fuel system then the 5.7?