E85 switch

[bad98gt]

running vortech supercharger with after cooler. Im thinking about goinging
to E85
Have 42 lbs inj. and two 255 fuel pumps.
what has to be changed and what else do i need?

 

[Mr. Rustypwnz]

bigger injectors (bout 40% bigger injectors), tune, some other little crap

 

[bhuff30]

Basically, you need a way to tune the timing and fuel curves, and a sufficient fuel supply.

On the fuel supply side, you'll probably want more than just a 42lb injector. It sounds small to me, though I didn't do the calculations. I would guess 2 255hp pumps will be sufficient. On the 88, I'm running a single 255 in tank and it has been good for just over 300rwhp. I expect the single pump to be too small for 400hp though.

I would sugguest a smaller pulley to take advantage of the octane. It is seriously awsome fuel. I was running 25psi from a tiny inefficient turbo, on 8:1 compression, in the summer, with an intercooler that is too small, and threw a 35 shot on top with no detonation. This year, I'm increasing the compression to 10:1, planning to run 20-22psi of boost with a small shot on top for good measure. E85 has excellent charge cooling and detonation resistance. Make use of it!

BTW, you don't need to change any O-rings or seals.