Thios isnt really Ford-specific, but I dont see a General tech forum.
Right now I usually run Shell V-Power 93 octane in my 347. Its currently at $3.69/gallon. The local E85 station is at $2.79/gallon. A friend of mine did some testing with his Flex Fuel F150 and his conclusion was that E85 needs to be about $.50 cheaper to be the same value as 87 octane, so with the $.90 difference between E85 and V-Power, I'm quite interested in this. Here's my fuel system:
Quick Fuel 750 carb (gasoline)
This Holley electric pump
Stainless braided line (rubber inside the braid)
Sumped stock gas tank
#1: Ive seen the Quick Fuel metering blocks for sale for E85. Ive heard that you need to jet about 30% more, and would want a .150 Needle & seat. Is it just that simple, for carb modifications, swap the metering blocks, change the jets and the needle?
#2: Will those fuel lines and gas tank be OK for E85 on a daily driven car?
#3: Ive read that the E85 has different burn characteristics than gasoline. What needs to be done with the timing?
I would be tuning with a wideband looking for a target A/F of 7.8-8.0 (.80-.81 Lambda).
Thanks for the help! Dan