I'm going with E85 and I believe it is sold at a depot near me. Have to make a few phone calls first to confirm it's availability.

It is cheaper or as cheap as standard fuel, produces a little less power which I probably would have lost in the advanced spark anyway running the BP Ultimate [98-102 RON].

I am convinced it will not affect the current fuel system components and I'm convinced that with the higher compression, the power results may not be as [comparatively] low as expected.

AvGas still burns very hot and I'm not sure on the specifics of the lead contents of the fuel so it sounds like a fairly aggressive fuel to me. I know the OG Speed Shop here in Adelaide sells it but it's a fair drive just to fuel up. I'll have to find out more about it first so I'll start with E85 and perhaps dilute it even further to achieve a higher gasoline - ethanol ratio.

To me E85 sounds like a rather tame, high-octane, cool burning fuel, and I'm pretty sure that's what I'd like to run.

Does anyone run AvGas in their street car? Costs? Whats with the lead content too?

EDIT:

Hey Bert,

That certainly is how things are looking but I don't have the gear to reduce the comp ratio at the moment so finding an oval port head means I'll need a new manifold to suit[ current manifold is port matched]. So the costs to change aren't really within my grasp.

Have you hd much to do with this ethanol blend stuff?