Around here (Iowa) our E85 is E70, how much N2O can you safely spray on it? 200hp or 250hp shot? This would be on a race ready 6.0 iron block 408 with LS3 heads.
I'm not new to N2O but I am new to working with EFI E85

thanks!

 

As long as you have the correct amount of timing and your tune-up is accurate, there isn't really a minimum amount you can spray. There are other factors that go into this such as fuel pump and line size, as well as things in the motor such as compression ratio. A moderate amount of nitrous shouldn't be any problem with that, if thats what you are asking.

-Garrett

 

True and I understand that, but what is generally a number people use on e85?
For example a 150 shot on 91 octane is a common practice. And 200 shot on pump gas is getting crazy but I've done it

 

Nitrous Express just answered it for you. Fuel is not the limiting factor the timing of the engine is. You can spray 1000hp on 87 if you could get the timing/tune correct.

 

E70 still has a decent octane rating. I would still test it to be safe. The main difference will be the amount of timing you can put to it. Obviously lower on the E70. 250 shouldn't be a problem. I've had cars spray well over that with 100 octane fuel.